Silo256
Coming soon
Silo256
Coming soon
Private by design · Android
Silo256 keeps your private photos, videos, PDFs and Word documents in encrypted vaults on your phone. Each pattern you draw opens its own vault — and the app never shows a list of them, so nobody can tell how many you have.
Private by design
Your pattern becomes a 256-bit key, your files are encrypted before they're saved, and nothing from a vault ever leaves the app.
AES-256 and XChaCha20, right on your phone. Files are encrypted before they're saved.
We don't have it, and we can't open your vaults. No accounts, no backdoor.
Files decrypt in memory and are shown inside the app — never as copies on your phone.
Screenshots are blocked, and the vault locks itself when you leave the app.
One pattern opens a single vault and quietly erases the others.
Hide how many vaults you really have.
Take photos and videos that go straight into a vault — they never touch your gallery.
Make the app look like Notes, Weather, News or Calculator on your home screen.
What you can keep in a vault
Silo256 opens every file inside the app, so a decrypted file never has to be handed to another app. A format is only added once Silo256 can show it safely itself.
Read in-app. Reading needs Android 11 or newer; on older phones they're stored safely but can't be opened.
.docx, converted and shown inside the app. Older .doc files aren't supported — save them as .docx first.
How it works
At least six dots. Your pattern is stretched into a 256-bit key — the one thing that can open this vault.
They're encrypted on your phone before they're saved. The vault stays encrypted, and the app never shows a list of your vaults.
Every vault gets its own 12-word recovery phrase. Without the pattern or the phrase, nobody can open that vault — including us.
Pricing
$0 with ads
Coming soon
Coming soon
The app will be free to download. Pro will be an optional purchase inside the app, through Google Play.
FAQ
Silo256 is coming soon to Google Play, for Android 9 and newer. It launches free, with ads. Pro comes in a later update.
Every vault has its own 12-word recovery phrase. With either the pattern or the phrase you can get back in. If you have neither, that vault can't be opened by anyone — including us. There's no reset service, because that would defeat the point.
Yes. Your pattern is stretched into a 256-bit key that unlocks the vault; nothing about your vaults is ever stored on our servers. We don't have your keys, we don't have a backdoor, and we can't open your files.
Your vaults never do: files are encrypted on your phone and stay there. The app goes online for two things only: a small signed settings file from our server, with no personal data in it, and ads from Google AdMob in the free version. Pro, when it launches, will add optional backup to your own Google Drive, encrypted on your phone with a secret that's never uploaded, so Google can't read it either.
No. Vaultaire is an iPhone and iPad app. Silo256 is built around the same idea for Android: draw a pattern, and it opens its own encrypted vault. How the two compare. Silo256 isn't affiliated with Vaultaire.
Silo256 is built for Android first. It needs Android 9 or newer. iOS may come later.
Not from the app: it never shows a list of vaults. Decoy folders (coming soon) will add plausible-looking dummies on top. One honest caveat: the free version is capped at 3 vaults, so anyone who watches you hit that limit learns three exist.
No. There's no sign-up, and the app works entirely on your phone. (Installing from Google Play needs a Google account, as with any app.) Pro's Drive backup, when it launches, will use Google sign-in only to reach your own Drive.