Documentation

Install Cache

Cache is a mobile application for iOS and Android. Install only from the official stores:

• App Store: Cache, by Cache Technologies Inc.
• Google Play: Cache, by Cache Technologies Inc.

Create your wallet

The first time you open Cache, you set a password and the app generates a wallet for you on your device. The password is used to unlock the app and to encrypt sensitive data on your device.

1. Open Cache and tap Create wallet.
2. Choose a password. Make it long and unique. The password is local to your device. There is no password reset email.
3. Confirm the password. Cache will generate your seed phrase in the next step.
4. Optionally enable biometric unlock (Face ID, Touch ID, or fingerprint) so you don't have to type the password every time.

Cache does not ask for an email address, phone number, or any government identification. You do not need any of these to use Cache.

Back up your seed phrase

Your seed phrase (also called a recovery phrase) is a list of twelve English words. It is the master key to your wallet. Anyone with the seed phrase can take all of your funds. If you lose it and lose access to your device, your funds are gone forever and Cache cannot recover them.

How to back it up

1. When Cache shows you the seed phrase, write all twelve words down on paper, in order. Use a pen, not a pencil.
2. Store the paper somewhere only you can reach it, ideally in two physically separate locations such as a home safe and a safe-deposit box.
3. For meaningful balances, consider a steel backup plate that survives fire and water.
4. Cache will then ask you to confirm a few of the words to prove you have written them down correctly.

What not to do

• Do not photograph the seed phrase or screenshot it.
• Do not store the seed phrase in iCloud, Google Drive, Dropbox, email, Notes, or any other cloud or sync service.
• Do not type the seed phrase into any website, browser extension, or other app.
• Do not share the seed phrase with family, friends, support agents, or "wallet validators" of any kind.

Cache uses the standard BIP-39 seed-phrase format, so the same twelve words can be imported into any compatible wallet if you ever need to.

Importing an existing wallet

You can import a wallet you already have, from any BIP-39 compatible source, by entering the twelve-word seed phrase or, for a single account, a private key. The seed phrase or private key is processed entirely on your device. Nothing you import is ever transmitted to our servers. The same protections and warnings above apply: never type a seed phrase into a website, never share it, never paste it into a chat or screenshot it.

Exporting your seed phrase

You can reveal and export your seed phrase from inside Cache after re-authenticating. Use this only when you need to back the seed phrase up to a fresh medium. Hide your screen from cameras, write the words down on paper, then dismiss the screen.

Multiple wallets and accounts

Cache supports multiple wallets per installation, and each wallet can have multiple accounts derived from the same seed phrase. You can switch between them inside the app. The smart wallet (Safe) features, including Recovery and Scheduled Transfer, are configured per wallet.

Contacts (address book)

You can save frequently used addresses as contacts inside the app, with a name and an optional note. Contacts are stored on Cache servers tied to your account so they sync across reinstalls. Contacts contain only what you choose to save; we do not auto-import addresses from anywhere.

Receive crypto

Each blockchain network has its own deposit address. Cache shows the right address for the network you select.

1. Open Cache and tap Receive.
2. Choose the network the sender will use (for example Ethereum, Base, Polygon).
3. Copy the address or scan the QR code.
4. Tell the sender to send to that address on that exact network.

Send crypto

1. Tap Send and pick the asset.
2. Paste or scan the recipient's address. Cache will check the address against risk lists (see Address screening).
3. Enter the amount.
4. Review the network, fee estimate, and recipient. Verify the first and last few characters of the address against an out-of-band source if the amount is meaningful.
5. Approve with Face ID, Touch ID, or your password.

Once a transaction is broadcast, it cannot be cancelled, reversed, or refunded by Cache. The blockchain decides what happens next.

Swap tokens

Cache lets you swap one token for another, on the same network or across networks. The swap itself is executed by an independent third-party decentralized exchange aggregator that routes your order through public liquidity venues. Cache does not custody any tokens involved in the swap.

Same-chain swap

1. Tap Swap and pick the token you want to sell and the token you want to receive.
2. Enter the amount. Cache will fetch a quote that includes the price, the swap fee, the estimated network fee, and slippage tolerance.
3. Review the quote. If the price impact is high, consider a smaller amount.
4. Approve. The order is signed on your device and sent to the aggregator. Settlement typically takes seconds to a few minutes.

Cross-chain swap

Cross-chain swaps move value between two different blockchains in a single flow. They use the aggregator's cross-chain protocol and may take longer than same-chain swaps depending on network congestion. Funds are released to your destination wallet only when the destination side settles.

Fees and slippage

• The total swap fee is up to 0.80% of the swap amount, charged and collected by the third-party aggregator. Cache earns a portion of this fee through a referral arrangement; Cache does not deduct any amount from your wallet.
• The blockchain network gas fee is separate and goes to the network's validators, not to Cache or to the aggregator.
• Slippage is the difference between the quoted price and the executed price. Cache shows your slippage tolerance before you sign. Higher tolerance increases the chance of execution but increases the chance of unfavourable pricing in volatile markets.

Buy and sell crypto

You can buy crypto with a card or bank transfer, and sell crypto for fiat, through an embedded interface to an independent third-party fiat aggregator. The aggregator integrates several licensed money services businesses, payment processors, and exchanges. Cache does not buy, sell, exchange, hold, or transmit fiat. Cache does not charge any fee on these transactions.

How it works

1. Tap Buy or Sell.
2. Choose the asset and amount. Cache will request quotes from the aggregator and show you available providers, prices, and total fees.
3. Pick a provider. You will be handed off to that provider's flow inside the app.
4. Complete identity verification (KYC) with the provider. KYC information is submitted directly to the provider and never to Cache.
5. Pay (for buys) or confirm a sale. The provider settles to your wallet (for buys) or to your bank or card (for sells).

If a transaction is delayed or fails, the issue is between you and the provider. Cache cannot release, hold, refund, or speed up a fiat transaction. The provider's support channel is the right escalation path.

Recovery

Patent pending. Recovery is an on-chain feature that lets you nominate a beneficiary address to receive your assets if you do not check in within a time interval you choose. It is designed for two situations: you lose access to your device and seed phrase, or you become incapacitated and someone else needs to inherit your assets.

How it works

1. Set up your smart wallet if you have not already.
2. Enable the Recovery module on your smart wallet. This is a one-time on-chain action and incurs an activation fee (see Fees) plus the network gas fee.
3. Configure a beneficiary address. This is the address that will receive your assets if Recovery triggers. It should be an address you (or someone you trust) control.
4. Choose a check-in interval (grace period) between 1 hour and 12 months. Common choices for long-term protection are 90, 180, or 365 days. Short intervals such as 1 hour are intended for testing the mechanism; we recommend you trial on Base before committing meaningful funds.
5. Confirm the configuration on-chain.

Check-ins

The Recovery timer is reset every time you sign an on-chain checkIn transaction from your smart wallet. We have made this easy to do:

• Live countdown on the dashboard. Whenever Recovery is active, the green banner at the top of the dashboard shows the time remaining until your Recovery would fire, in the format months, days, hours, or minutes (whichever is most relevant). The banner is also shown on the Transfers screen.
• One-tap "Extend Now" button. Tap the button in the banner, confirm with biometric or password, and Cache signs a check-in transaction for you. No need to navigate anywhere.
• Visual warning. When less than 25% of your grace period remains, the countdown turns yellow to draw your attention. The banner stays green to remind you Recovery itself is still active.
• Push reminder. You pick a reminder time at setup (e.g., 1 hour, 1 day, or up to 7 days before Recovery would fire). Cache sends a push notification at that time prompting you to extend. Push delivery is not guaranteed by Cache, so the in-app banner is the authoritative signal.

App opens, biometric unlocks, sending, swapping, or simply having Cache installed do NOT by themselves reset the timer. The timer only resets when an on-chain checkIn transaction is signed by you. Tapping Extend Now is the simplest way to do that.

What happens when Recovery triggers

If the timer expires without a check-in, the Recovery smart contract module becomes triggerable. Anyone can submit the trigger transaction; it does not have to be Cache. When the trigger executes, your eligible assets are transferred on-chain to your beneficiary address. An execution fee is taken from each asset transferred (see Fees: 1% on Base, 2% on Ethereum mainnet). A small keeper bounty is also deducted from your smart wallet's native asset balance and paid to the party that submits the trigger transaction; see the fee table for details.

Cancelling or changing Recovery

You can change the beneficiary address, change the check-in interval, or disable Recovery entirely at any time before it triggers, by signing a transaction from your wallet. Each change is on-chain and incurs network gas, but does not incur a new activation fee.

Important things to understand

• Recovery does not let Cache, or anyone else, sign transactions on your behalf. The trigger only moves assets to the beneficiary you nominated in advance.
• If the beneficiary address is compromised, your funds will be sent to the compromised address when Recovery triggers. Choose your beneficiary carefully and rotate it if the key is ever compromised.
• If you nominate a beneficiary address you do not control and you do not trust, you have effectively gifted them your assets after the timer expires.
• Recovery sweeps up to the top ten tokens by USD value at trigger time, plus your smart wallet's native asset. Tokens ranked outside the top ten will remain in your smart wallet and will not be moved by that Recovery trigger. To protect more than ten tokens, deploy multiple smart wallets (each with its own Recovery), consolidate holdings before activation, or use the manual cleanup function described next.
• Only tokens recognised by the on-chain price registry participate in the top-ten ranking. Cache curates this registry to cover popular assets. Tokens not in the registry will not be moved by the main trigger but can be claimed afterward via manual cleanup.

Manual recovery cleanup

The main Recovery trigger is a one-shot event. Once it fires, the on-chain state changes to "recovered" and no further sweeps will be triggered automatically. Three categories of tokens can be left behind by the main trigger:

• Tokens that arrive in your smart wallet after the trigger fires (for example, vesting tranches or retroactive airdrops).
• Tokens beyond the top-ten cap at trigger time.
• Tokens not present in the on-chain price registry at trigger time.

To recover these, the smart contract module exposes a follow-up function called manualRecovery that can be called by the registered beneficiary at any time after the main trigger. The beneficiary passes a list of token addresses to sweep, and the module transfers them from the smart wallet to the beneficiary using the same execution fee as the main trigger. The beneficiary pays their own network gas to submit this transaction; no keeper bounty is charged.

If you cancel Recovery before it ever triggers, the beneficiary is also cleared from the on-chain state at the moment of cancellation. A cancelled Recovery cannot be used to claim future deposits via manualRecovery.

Execution timing

To keep on-chain costs predictable for both Cache and your beneficiary, the keeper infrastructure that submits Recovery and Scheduled Transfer transactions is configured to wait until network gas prices are within a normal range before broadcasting. The thresholds are:

• Base mainnet: the keeper waits until network basefee is at or below 0.1 gwei. Base normally operates well below this threshold; in practice, queued triggers fire within minutes.
• Ethereum mainnet: the keeper waits until network basefee is at or below 2 gwei. Over the past several years Ethereum has averaged 1–2 gwei the vast majority of the time, so most triggers fire promptly. During periods of sustained network congestion (typically a few days at most), the trigger may be queued and delayed until conditions return to normal.

Execution will still occur automatically once the network calms down; neither you nor your beneficiary needs to take any action to unblock it. The Recovery feature itself remains intact during the wait, including the price oracle, the beneficiary configuration, and the trigger eligibility.

Scheduled Transfer

Patent pending. Scheduled Transfer is an on-chain feature that lets you schedule a future transfer of assets to one or more addresses. Use it for allowances, gifts, recurring payments, or simple time-locked transfers.

How it works

1. Enable the Scheduled Transfer module on your smart wallet. Activation fee plus network gas applies (see Fees).
2. Pick the asset, the recipient address, and the amount.
3. Pick the date and time of execution.
4. Confirm on-chain.

At the scheduled time, the smart contract module becomes triggerable and moves the assets. An execution fee is taken from the asset transferred (see Fees: 0.5% on Base, 1% on Ethereum mainnet—half the Recovery rate, because Scheduled Transfer is designed for repeat use). A small keeper bounty is also deducted from your smart wallet's native asset balance and paid to the party that submits the execution transaction; see the fee table for details. You can cancel a scheduled transfer at any time before it executes.

Fee handling: fee on top vs fee from amount

Where your smart wallet holds enough of the scheduled asset to cover the registered amount plus the execution fee, the fee is charged in addition to the amount and your recipient receives the exact registered amount. Where the smart wallet holds only enough to cover the registered amount, the fee is deducted from the payout (the recipient receives amount − fee) and the module records that the deduction happened. Scheduling more than the recipient is meant to receive is a simple way to guarantee they get the exact registered amount.

Other limits

Each scheduled transfer can include up to ten (10) distinct tokens. To schedule transfers involving more tokens at once, create additional scheduled transfers. The minimum time between "now" and the scheduled execution is 1 hour.

Scheduled Transfer execution is subject to the same gas-price queueing described in Execution timing. During sustained periods of high network congestion, scheduled transfers may execute later than their nominal time.

Reward NFTs

Cache distributes commemorative non-fungible tokens (NFTs) to users who reach activity milestones in the app. The NFTs are recognition only. They have no in-app utility, no governance rights, no fee discount, and no claim on Cache revenue.

How rewards work

• Cache offers a tiered NFT collection. The current tiers, qualifying activity, and supply caps are shown inside the Cache app.
• Once you reach a tier's threshold, the app lets you claim the corresponding NFT. You sign and submit the mint transaction yourself, paying network gas.
• Each tier has a hard supply cap. Once a cap is reached, that tier closes and no further NFTs in that tier are issued.
• Cache may modify, pause, or end the rewards program at any time.

What happens after you claim

• The NFT is recorded permanently on a public blockchain. Anyone can see the contract, token identifier, and your public address.
• The NFT is transferable on secondary marketplaces such as OpenSea or Magic Eden. Cache does not list, broker, or take a fee from any secondary trade.
• You can view the NFT inside Cache and in any external NFT-aware wallet.

Tax

Receiving, holding, or transferring an NFT may be a taxable event in your jurisdiction. Cache does not issue tax forms and does not provide tax advice. If you are unsure, consult an accountant.

What the NFTs are not

• They are not investments. Cache makes no promise about their monetary value, future value, or future utility.
• They do not give you equity, voting rights, dividends, fee discounts, or any claim on Cache or any affiliate.
• They are not securities and they are not redeemable for anything.

Referral program

Cache lets you invite other people to use the app through a personal referral code or share link. Successful referrals can make you eligible for higher reward NFT tiers.

How it works

• Open the rewards section in the app to see your referral code and share link.
• Share the link with friends, family, or anyone who would benefit from a self-custody wallet with Recovery.
• When someone creates an account using your code and completes the qualifying actions shown in the app (such as creating a smart wallet and enabling Recovery), they count as a successful referral for you.
• Cumulative successful referrals can unlock eligibility for higher reward NFT tiers, as shown in the app.

What you do not get

• Cache does not pay you cash, cryptocurrency, fiat, or any token for referrals.
• Successful referrals do not entitle you to any equity, revenue share, governance right, or financial instrument.
• The only program reward is eligibility for the commemorative reward NFTs described above.

Anti-abuse

Cache may exclude users who Cache reasonably believes are referring themselves through multiple accounts, automating sign-ups, or otherwise gaming the program. Cache may also pause or modify the program at any time.

Smart wallet

Cache provides both a regular wallet (an externally-owned account, or EOA) and a smart wallet. The smart wallet is a Safe smart contract owned by your EOA, and it is what enables Recovery and Scheduled Transfer.

Why a smart wallet

• An EOA can only do what one private key allows. It has no programmable rules.
• A smart wallet is a contract, so it can run rules: "if this address has not signed a check-in for 90 days, allow assets to be moved to these beneficiaries". Recovery and Scheduled Transfer are these rules.
• Cache uses the open-source Safe smart contract framework, the same framework used by treasuries and DAOs holding billions of dollars on-chain. Safe is open source and audited.

What the smart wallet costs

Deploying the smart wallet itself costs only the network gas fee for the deployment transaction. Cache does not charge to create a smart wallet. Module activation fees apply only when you turn on Recovery or Scheduled Transfer.

Security model

Cache is built on the principle that you alone control your funds.

Where keys live

• Your seed phrase and private keys are generated on your device.
• They are stored in your device's secure enclave: iOS Keychain on iPhone, the Android Keystore on Android.
• They never leave your device. They are never sent to a Cache server.
• They are not in iCloud, Google Drive, or any backup, unless you choose to put them there yourself, which we strongly recommend against.

Where the password lives

• Your password is used locally to unlock the app and to encrypt sensitive data on your device.
• Where a password is used to authenticate against Cache servers, only a one-way cryptographic hash with a per-user salt is stored.
• There is no password reset email. If you forget your password and have not enabled biometric unlock, you will need to reinstall the app and restore from your seed phrase.

Biometric unlock

Cache supports Face ID, Touch ID, and Android fingerprint unlock as an optional convenience. Cache does not see, store, or transmit your biometric data. All biometric matching happens inside your device's secure enclave; Cache only receives a yes/no result. We record only a flag indicating that biometric unlock is enabled on your device, never the biometric data itself.

Audits

Cache contracts are audited by independent security firms. Reports are published in the Security section of cachewallet.com when each engagement completes.

Reporting a vulnerability

If you find a security issue in Cache, the smart wallet modules, or the Cache backend, please email legal@cachewallet.com with details. We will acknowledge receipt and keep you informed of progress.

Address screening

To protect users and meet our compliance commitments, Cache screens wallet addresses involved in your transactions against sanctions, malicious-actor, and high-risk lists provided by independent third-party blockchain analytics providers.

What you might see

• Block. The address matched a sanctions list, a known malicious address, or a money-laundering indicator. The transaction will not proceed.
• Warn. The address has heightened risk indicators (for example phishing reports, darkweb associations, or fake-KYC patterns). You can choose to proceed at your own risk after reading the warning.
• No issue. No risk match. This is the most common outcome.

Screening is performed on a best-effort basis. Risk lists are not exhaustive and a clean screen does not mean an address is safe. Always verify the recipient through an out-of-band channel for meaningful amounts.

Fees

Cache earns revenue from a small number of clearly disclosed fees. There are no subscription fees, no asset-holding fees, no listing fees, and Cache does not earn revenue by selling user data. Recovery and Scheduled Transfer fees differ between Base and Ethereum mainnet because the underlying network infrastructure costs differ; all other fees are the same on both chains.

Item	Fee	Who collects
Wallet creation	Free	n/a
Smart-wallet deployment	Network gas only	Blockchain network
Send / receive	Network gas only	Blockchain network
Swap (same-chain or cross-chain)	Up to 0.80% of swap amount, plus network gas	Charged by third-party swap aggregator. Cache earns a referral share. Network gas goes to the network.
Buy crypto (fiat ramp)	Provider fees only. Cache charges nothing.	Third-party fiat aggregator and underlying licensed providers.
Sell crypto (fiat ramp)	Provider fees only. Cache charges nothing.	Third-party fiat aggregator and underlying licensed providers.
Recovery activation — Base	US$25 (one-time, paid in native asset at oracle rate), plus network gas	On-chain Recovery module
Recovery activation — Ethereum mainnet	US$50 (one-time, paid in native asset at oracle rate), plus network gas	On-chain Recovery module
Recovery trigger (execution) — Base	1% of each asset transferred	On-chain Recovery module, deducted from amount transferred
Recovery trigger (execution) — Ethereum mainnet	2% of each asset transferred	On-chain Recovery module, deducted from amount transferred
Manual recovery cleanup (beneficiary-initiated)	Same execution fee as the Recovery trigger on that chain (Base 1%, Ethereum mainnet 2%); no keeper bounty	On-chain Recovery module, deducted from amount transferred
Scheduled Transfer activation — Base	US$25 (one-time, paid in native asset at oracle rate), plus network gas	On-chain Scheduled Transfer module
Scheduled Transfer activation — Ethereum mainnet	US$50 (one-time, paid in native asset at oracle rate), plus network gas	On-chain Scheduled Transfer module
Scheduled Transfer execution — Base	0.5% of each asset transferred (charged on top of the amount when wallet balance allows; otherwise deducted from the amount)	On-chain Scheduled Transfer module
Scheduled Transfer execution — Ethereum mainnet	1% of each asset transferred (charged on top of the amount when wallet balance allows; otherwise deducted from the amount)	On-chain Scheduled Transfer module
Minimum smart-wallet balance to register Recovery — Base	Equivalent of US$50 in the smart wallet's native asset at activation time (oracle rate)	Enforced on-chain at registration; no charge to Cache
Minimum smart-wallet balance to register Recovery — Ethereum mainnet	Equivalent of US$500 in the smart wallet's native asset at activation time (oracle rate)	Enforced on-chain at registration; no charge to Cache
Keeper bounty (Recovery and Scheduled Transfer)	Greater of US$5 (in native asset at oracle rate) or gas-cost reimbursement plus a small margin and tip; capped at 1 native unit (e.g., 1 ETH) and at half your smart wallet's native balance	Paid on-chain to the keeper that submits the execution transaction (may be Cache or any third party). Not charged for beneficiary-initiated manualRecovery cleanups.
Reward NFT mint	Network gas only. No Cache fee.	Blockchain network
Reward NFT secondary sales	Marketplace fees as set by the marketplace. No Cache royalty.	Third-party NFT marketplace
Referral program	Free to participate. No fee, and no payment from Cache.	n/a

Cache may change any of these fees at any time, in its sole discretion, by updating this Documentation or by deploying a new smart-contract module. Where a fee change applies to a feature you have already activated, your existing on-chain configuration governs unless and until you migrate. Cache will provide reasonable advance notice of material fee changes through the Services. For the formal contract reference, see Section 4 of the Terms of Service.

Supported networks

Cache supports the following blockchain networks. Network support evolves over time; this list is updated when networks are added or removed.

• Ethereum
• Base
• Polygon
• Arbitrum
• Optimism

Smart-wallet features (Recovery and Scheduled Transfer) are available on the EVM networks listed above where the modules are deployed. The most current list of feature availability per network is shown inside the app.

FAQ

I lost my device. How do I get back in?

Install Cache on a new device, choose Restore from seed phrase, and enter your twelve-word seed phrase. Set a new password. Your wallet, balances, and smart-wallet configuration will reappear because all of that information lives on-chain or is derived from your seed phrase.

I lost my seed phrase but my device still works.

Stop using the wallet immediately. Move all funds out to a new wallet whose seed phrase you have backed up properly. Without a backed-up seed phrase you are one device-loss away from losing everything.

I lost my seed phrase and my device.

If you did not configure Recovery in advance, your funds are unrecoverable. Cache cannot restore a wallet for which it does not hold the keys, and Cache does not hold the keys for any wallet. This is the cost of self-custody, and it is the reason Recovery exists.

I forgot my password.

Reinstall the app and restore from your seed phrase, then set a new password. There is no password-reset email because Cache has no email on file for you.

I sent funds to the wrong address.

Cache cannot reverse on-chain transactions. The blockchain is final. If you sent to a contract address by mistake, in some cases the contract owner can return funds, but this is rare. If you sent to the wrong personal address, your only option is to ask the recipient to return them.

I sent funds to the right address but on the wrong network.

If the recipient controls a wallet on the network you used, they may be able to import the same address on that network and recover the funds. If the recipient does not control such a wallet, the funds may be permanently inaccessible. Always confirm the network with the sender before sending.

My token balance is wrong / a token is missing.

Pull-to-refresh on the wallet screen. If a token is still missing, it may not yet be in our token list. Email legal@cachewallet.com with the contract address and the network and we will look at it.

Why does Cache not ask for an email or phone number?

Because we do not need them. The wallet is generated on your device and operated with the keys on your device. Tying your wallet to an email or phone number would weaken your privacy and create an account-recovery vector that attackers love.

Does Cache have access to my funds?

No. Cache holds no private keys, no seed phrases, and no signing capability for your assets. Recovery and Scheduled Transfer execute by on-chain rules you configure; they are not Cache acting on your behalf.

What happens to my wallet if Cache shuts down?

Your seed phrase still controls your wallet. You can import it into any BIP-39 compatible wallet to continue managing your funds. The Cache smart-wallet contracts (Safe and the Recovery and Scheduled Transfer modules) are open source and remain on-chain regardless of the state of Cache the company.

Is Cache regulated?

Cache is a non-custodial software provider. It does not hold customer funds, does not transmit fiat, and does not facilitate exchange in a custodial sense. The fiat ramp is operated by independent licensed money services businesses; KYC for those services happens with those providers, not with Cache.

Get support

For account-related questions, support requests, security reports, and privacy enquiries:

legal@cachewallet.com

For details on what data Cache collects and how it is used, read the Privacy Policy. For the formal contractual terms, read the Terms of Service.