1Byte Systems

1B PassPassword manager for Android

Your passwords. Never online.

1B Pass is a password manager that cannot connect to the Internet — not even if it wanted to. Your vault is encrypted on your phone, fills in logins in your apps and browsers, keeps your two-step codes and tells you which passwords deserve a change.

  • No Internet permission
  • AES-256-GCM + Argon2id
  • Autofill
  • Two-step codes
  • No ads, no account

Early accessClosed testing on Google Play

The test page works once your Google account is on our tester list.

How your vault is locked

No cloud to trust and no server to break into. Just strong, well-known cryptography, done carefully on your phone.

  1. Your master password

    Only you know it. 1B Pass never stores it — not even scrambled.

  2. Argon2id, on purpose slow

    It uses 64 MiB of memory and is tuned so each attempt takes about 0.75 s on your phone. Fine for you; painful for anyone guessing.

  3. A random 256-bit key

    The key that really opens your vault. Your password only unlocks it.

Each item, sealed separately with AES-256-GCM

  • Logins
  • Cards
  • Secure notes
  • Wi-Fi
  • Identities
  • Custom

Modified file? Refused. If anyone changes a single byte of the vault, 1B Pass notices and won't open it.

Other keys to the same vault

  • FingerprintUses a key locked in your phone's secure hardware, and asks for it every time.
  • 6-digit PINQuick to type. After 5 wrong tries, only the master password will do.
  • Recovery keyFor emergencies: 32 characters you can print or keep as a PDF made on your phone.

There is no back door — not even for us. Forget both your master password and your recovery key, and nobody can open the vault.

  • 0connections to the Internet: the app isn't even allowed to make one
  • 256-bitAES-GCM encryption, item by item
  • ≈0.75 sfor every password guess, tuned to your phone
  • 7,776words to build memorable passphrases from

Logins filled in. Without leaving the app.

1B Pass works with Android's own autofill, in apps and in browsers.

  1. Tap the login field

    Your matching logins appear in the list or right above your keyboard.

  2. Unlock where you are

    Fingerprint, PIN or password, without switching apps.

  3. Filled in

    Username and password go straight into their fields. Nothing to copy, nothing to paste.

  4. Saved for next time

    New account or changed password? 1B Pass offers to save or update it.

Phishing guard

Your bank's login goes to your bank. Only.

Website logins are offered only to real browsers and matched by the site's main domain, so a look-alike address or another app posing as one gets nothing.

Security in detail

No marketing words like “unbreakable”. Here is exactly what protects your vault.

  • Every item is encrypted separately with AES-256-GCM, and any tampering with the vault file is detected and refused.
  • Your master password is never stored: the key is derived from it with Argon2id, tuned so each attempt takes about three quarters of a second on your phone.
  • No network at all: the Internet permission is removed from the app and from every library it uses.
  • Fingerprint and PIN unlock use keys locked in your phone's secure hardware (Android Keystore); after 5 wrong PINs the master password is required.
  • Autofill uses the standard Android Autofill Framework, and website logins are offered only to real browsers, so another app can't pose as your bank.
  • Emergency recovery kit: a recovery key you can print or save as a PDF made on your phone. There is no back door — not even for us.

Item types

  • Logins
  • Cards
  • Secure notes
  • Identities
  • Wi-Fi
  • Custom

Import from (CSV)

  • Chrome / Google
  • Bitwarden
  • KeePassXC
  • KeePass 2
  • 1Password
  • LastPass
  • Firefox
  • Generic CSV

Unlock with

  • Master password
  • Fingerprint
  • 6-digit PIN
  • Recovery key

Two-step codes

  • TOTP
  • HOTP
  • Steam Guard
  • SHA-1
  • SHA-256
  • SHA-512

Everything you need, nothing that phones home

  • Built-in authenticator

    Two-step codes next to your logins. Add them by scanning a QR code, from an image or with an otpauth link.

  • Password generator

    Passwords of 8 to 64 characters, or easy-to-remember passphrases of 3 to 10 words.

  • Password health check

    Spots weak, reused and old passwords and sites without https, with a score from 0 to 100.

  • Emergency recovery kit

    A recovery key to print or keep as a PDF, created on your phone and shown only to you.

  • Automatic encrypted backups

    Every few hours or days, to a folder you choose. The last 10 are kept, still encrypted.

  • Wi-Fi for guests

    Store your network and show a QR code so visitors can join without spelling the password.

  • Cards, done right

    The card brand is recognised and the number is checked for typos.

  • Locks itself

    Auto-lock, clipboard clearing, screenshots blocked and an incognito keyboard while you type.

Lock your passwords away — for real

1B Pass is in closed testing on Google Play. Ask for an invite, then install it from the test page.

The test page works once your Google account is on our tester list.
Public release on Google Play: coming soon

Privacy at a glance

  • No Internet permission: your vault never leaves your device — the app cannot send it anywhere.
  • Every item is encrypted with AES-256-GCM; your master password is protected with Argon2id and never stored.
  • Backups and exports go only where you choose, through the Android file picker.

Read the full privacy policy

Details

Early access
Closed testing on Google Play
Requires
Android 11 or later
Languages
21 languages
Price
Free download
Package
com.onebytesystems.pass