About Sealda

Your recovery phrase and private keys never reach our servers, and your PIN is never sent anywhere. To show your balances and history, Sealda's servers (api.sealda.app) read the blockchains for the app: they look up balances and history for your public addresses, quote network fees, prepare Tron transactions that your iPhone checks before signing, pass your signed transactions to the network, and send notifications if you allow them.

Our servers see your public addresses — which anyone can see on the blockchain — but never your keys, so we can't create or change a signed transaction. The Privacy Policy explains what they keep and how long they keep it, or how we decide.

You hold the keys, so you carry the risk. Sealda gives you tools to hold them well — a PIN stretched with Argon2id, keys sealed with AES-256-GCM, Face ID or Touch ID, hidden wallets and an optional encrypted iCloud backup — but no one at Sealda can unlock anything for you. There is no support agent who can recover funds and no email reset. If you lose your iPhone and have neither your recovery phrase (or private key) nor a backup, nobody can recover the funds — including us.

Sealda is developed by It services company s.r.o., a společnost s ručením omezeným (Czech limited liability company) registered in the Czech Republic (IČO 03366171), with its registered office at Dandova 2619/13, Horní Počernice, 193 00 Praha 9, Czech Republic. We build the app and run the Sealda servers. For now, the TestFlight builds are distributed through an individual's Apple developer account, which is why TestFlight names a person as the developer. They move to the company's own Apple developer account before the App Store release.

Sealda is non-custodial: your keys never reach our servers, so no one at It services company s.r.o. can move, freeze or recover your funds. Full company details are on the Support page.

• BIP-39 recovery phrases with BIP-32 / BIP-44 key derivation.
• libsecp256k1 for signatures; Argon2id and AES-256-GCM for your PIN, keys and backups.
• Sealda's own servers read Tron, Ethereum and BNB Smart Chain and broadcast your signed transactions; the Privacy Policy describes who else processes data.

Questions, problems and security reports: see the Support page.