YDWallet vs SeedArk Mnemonic Vault

YDWallet is a simple cryptocurrency wallet, which allows you to store and use cryptocurrency directly on your device. Currently the app supports Ethereum and Ethereum-based (ERC20) tokens. We plan to add support for more (eg Bitcoin) in the future. ** App Features ** YDWallet lets you easily store and transfer cryptocurrency. - Send and receive cryptocurrency - Send to nearby users - Send to address by scanning a QR code - Create QR code and links for others to scan to send cryptocurrency to you - Sync encrypted accounts between your devices via iCloud - Create your own cryptocurrency or token with our automatic ERC20 smart contract generator - Backup the private keys of your accounts - See an estimation of your cryptocurrency's value in US$ ** Ethereum Features ** - Create new Ethereum accounts with their own receive address - Monitor Ethereum addresses and transactions - Transactions are signed offline directly on your device Signed transactions are sent to the Ethereum network via proxy servers, so you don't need the full blockchain on your device. ** ERC20 Features ** ERC20 tokens are cryptocurrencies which run on top of the Ethereum network. You can create an account to hold any ERC20 token, either by selecting from our list of top tokens, or by scanning or entering the Contract Address of the token. YDWallet will also automatically detect any incoming tokens to your Ethereum account. YDWallet also allows you to create your own ERC20 token or currency, with either a fixed initial supply of tokens, or with a flexible supply that allows you to generate more coins whenever you want. ** Security Features ** All account private keys are stored in your device's Keychain and synced between your devices with iCloud. All transactions are signed offline on your device directly before being sent to the network. For extra security, you can lock your accounts with a password you choose. All transactions are created and signed directly on the device, no third-party servers see your private keys Signed transaction data is distributed via blockchain proxy servers to prevent needing the full blockchain on your device ** Caution ** Storing large amounts of cryptocurrency is best done with an offline cold storage wallet.

SeedArk is a fully offline BIP-39 mnemonic vault for storing recovery words from hardware wallets, cold wallets, and self-custody setups. It is not a wallet. SeedArk does not derive addresses, connect to blockchain RPC endpoints, send transactions, or provide buying, selling, swapping, lending, staking, or any financial operation. It does one job: store your mnemonics and optional passphrases as encrypted local records, so you can look them up when you need them. Core features • Fully offline by design: no account, no cloud sync, no remote server • Supports 12 / 15 / 18 / 21 / 24-word BIP-39 English mnemonics • Generate new mnemonics on device or enter existing ones manually • Validate BIP-39 wordlist membership and checksum during entry • Store optional passphrases with UTF-8 hex display for byte-level checking • Organize multiple records with names, chain tags, and notes • Search names, tags, and notes while excluding sensitive seed data • Unlock with an app password and optional Face ID fast path • Auto-lock after backgrounding or inactivity • Disable copy and share menus on sensitive views • Add defenses for third-party keyboards, dictation, screenshots, screen recording, and app switching • Export the full vault as an encrypted .wwbk file for migration or secondary backup Security model SeedArk encrypts the local vault with AES-GCM through Apple CryptoKit and derives password keys with Argon2id through swift-sodium / libsodium. Keychain items are limited to this device and never synchronize through iCloud Keychain. Data files use complete file protection and are excluded from system backups. SeedArk is not meant to replace your paper or steel backup. Your handwritten offline copy should remain the ultimate source of truth. SeedArk is a second layer for daily lookup, organization, migration backup, and local encrypted safekeeping. If you need a connected wallet, market data, trading, address derivation, or on-chain interaction, SeedArk is not that tool. If you need a restrained offline vault dedicated to mnemonic storage, that is exactly what it is built for.