Encrypted before it exists anywhere
Type the phrase into a sealed note and it is encrypted immediately with its own key. No plaintext file, no screenshot in the camera roll, no chat history.
Use case
Your seed phrase, finally somewhere sane.
A seed phrase in a screenshot, a notes app, or a cloud drive is one sync away from being someone else’s. Sealby keeps wallet backups encrypted on your device, behind hardware-protected keys — with no account that can be phished.
Where should I store my crypto seed phrase?
Never in screenshots, chat apps, or cloud notes — those sync in plaintext and are the first thing malware looks for. Store it offline (metal or paper) plus, for daily access, in a local-first encrypted vault like Sealby: AES-256-GCM on-device, keys in the Secure Enclave, no account to phish.
Nothing to phish, nothing to breach
No Sealby account, no email login, no server-side wallet of user data. Attacks that empty exchanges and password managers have nothing to aim at.
Deniable if it matters
Keep holdings in a hidden vault that can’t be proven to exist — relevant at borders, in a robbery, or anywhere “open your phone” is said out loud.
Common questions
Is it safe to keep a seed phrase on a phone at all?
A phrase typed into ordinary apps is not safe — screenshots, keyboards and sync can all leak it. A local-first vault changes the economics: Sealby encrypts the phrase on-device with AES-256, keeps keys in the Secure Enclave, and never sends anything readable anywhere. Pair it with an offline backup for large holdings.
What happens if I lose my phone?
With Premium, your vault syncs to iCloud as an unreadable encrypted blob you can restore with the vault’s recovery phrase. Without backup, treat Sealby as one copy — keep your usual offline backup too.
Related: The security model · Hidden, deniable vaults · IDs & financial documents
Your vault is waiting.
Download Sealby and lock down what matters — in under a minute, with no account to create.
Download on the App Store
iPhone & iPad · iOS 17+ · Free