Describing Pearlin
In one line
Pearlin is a private vault for photos and files on iPhone and iPad: encrypted vaults that open with a pattern only you know, with no account.
In a paragraph
Pearlin keeps private photos, videos, documents and other files in encrypted vaults on your iPhone or iPad. Each vault opens with a pattern you draw on a 5×5 grid, and the lock screen never shows how many vaults there are. There’s no account and no Pearlin server: everything is encrypted on the device, and optional backup and sync use your own iCloud. Vaults move to a new phone as one encrypted file, and every vault has a recovery phrase in case you forget the pattern.
What’s different about it
- A pattern, not a passcode. Apple’s Hidden album opens with Face ID or the phone passcode, so anyone who can unlock the phone can open it. A Pearlin vault opens only with its own pattern and its own key.
- Nothing to count. Several vaults can sit behind different patterns, and the app never lists them. One vault can be a duress vault that erases the others when it’s opened.
- No account, no server. No sign-up, no ads and no analytics in the app. The developer can’t open a vault or recover one.
- Built to be checked. The security model is published in full, including what the app can’t protect against.
Facts
- Name
- Pearlin
- What it is
- A private vault: encrypted vaults for photos, videos, documents, notes and any other file
- Platforms
- iPhone and iPad, iOS and iPadOS 17 or later
- Availability
- Coming soon to the App Store
- Made by
- Lakmal Silva, an individual developer based in Sri Lanka
- Languages
- 19, including English, Spanish, Japanese, Hindi and Arabic
- Account needed
- None
- Ads, analytics, tracking in the app
- None
- Encryption
- AES-256-GCM for files, Argon2id for the pattern, SQLCipher for the vault index
- Website
- www.pearlin.app
Images
Please use the icon as it is: don’t crop it to a circle, recolour it or add effects. Screenshots of the app come with the App Store release; if you need them before then, ask and we’ll send a set.
Contact
For interviews, review access or questions, email support@pearlin.app. You’ll hear back from Lakmal Silva, who builds Pearlin.

