Calculator Vault & Locker

Fexo brings you a calculator that guards your most private moments. It looks and works like an ordinary calculator — but type your secret PIN and press "=" to open a fully encrypted vault only you can reach.

Anyone who picks up your phone just sees a working calculator. Your photos, videos, files, notes, contacts, and audio stay locked behind military-grade AES-256 encryption, stored only on your device and never uploaded anywhere.

Fexo Calculator Vault is built for real privacy. Move sensitive photos and videos out of your Photos library and into the vault, unlock instantly with Face ID or Touch ID, and set a decoy PIN that opens a harmless second vault if someone pressures you to unlock the app.

KEY FEATURES

Working calculator that hides a PIN-protected vault behind "="

Decoy PIN opens a separate, harmless vault under pressure

Face ID and Touch ID unlock

AES-256 on-device encryption with Argon2id and iOS Keychain keys

Six vaults: photos, videos, files, notes, contacts, and audio

Move photos and videos out of Photos and delete the originals

Restore items back to Photos or to the Files app anytime

Secret camera and voice recorder save straight into the vault

Built-in photo, video, audio, and PDF viewers

Albums, favorites, search, sort, and batch operations

Intruder selfie captures anyone who enters the wrong PIN

Screenshot and screen-recording detection with a security log

Auto-lock, lockout, shake-to-lock panic gesture, and App Switcher privacy overlay

Encrypted local backup you can restore on a fresh install

Why choose Fexo: everything runs fully offline, so your private data never leaves your device. No cloud, no accounts, no tracking — just a calculator that keeps your secrets.

From the Fexo team, privacy you can hold in your hand.

Download Fexo Calculator Vault today and keep what matters truly private.