Krypta: Secure File Vault

Kiran Chenna Tech

About this app

Krypta is a private, offline file vault for Android. Lock away your most sensitive photos, videos, documents, audio recordings and notes behind a 6-digit PIN — encrypted on your device, answerable to no one but you.

There are no accounts to create, no servers to trust, and nothing leaving your phone. Krypta has no ads, no analytics, and no tracking of any kind — because there is nothing to track.

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
🔒 MILITARY-GRADE ENCRYPTION
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Every file is sealed with XChaCha20-Poly1305 — the same cipher trusted by security professionals worldwide. Your PIN unlocks the vault; it never becomes the key. Encryption uses Argon2id key stretching combined with a hardware-backed device secret, making offline brute-force attacks practically impossible.

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
📁 WHAT YOU CAN STORE
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
• Photos and videos — import from gallery or capture directly with the built-in camera (captures never appear in your camera roll)
• Documents — PDFs, spreadsheets, contracts, IDs, and any other file
• Audio — music, voice recordings, and personal audio files
• Secure notes — passwords, codes, private writing stored entirely in encrypted memory
• Scanned documents — multi-page paper documents scanned straight into an encrypted PDF

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
✨ FEATURES
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
• Built-in image viewer, video player, audio player and PDF reader — open files without ever exporting them
• Decoy PIN — a second PIN opens a harmless decoy vault, giving you plausible deniability
• Intruder photo — silently captures a front-camera photo when a wrong PIN is entered; shown only to you
• Break-in log — see exactly when and how many times someone tried to access your vault
• Auto-wipe — optionally destroy the vault after a set number of wrong PIN attempts
• Auto-lock — vault locks automatically when you leave the app
• Screenshot protection — prevents screen capture on sensitive screens

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
☁️ OPTIONAL CLOUD BACKUP
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Lose your phone, not your vault. Enable Google Drive backup to keep an encrypted copy of your vault safe. The archive is encrypted on your device before it is uploaded — Google only ever stores ciphertext it cannot read. Restore on a new device with your backup PIN or recovery phrase.

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
🛡️ PRIVACY PROMISE
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
• Zero data collected — no names, emails, device IDs, or usage statistics
• No internet connection required — Krypta works fully offline
• No third-party SDKs for ads or analytics
• Open privacy policy: kiranchenna.com

Krypta is free, with no subscriptions and no hidden costs. Your private files deserve real protection — not a hidden folder.

What’s new

Share to encrypt — Share any photo, video, or file directly from Google Photos or any app straight into your encrypted vault. No more switching apps to import.

Image thumbnails — Your photos now show real previews in the vault grid so you can find files at a glance.

Select multiple files — Long-press or tap the checkbox to select multiple files, then export or delete them all at once.

Bug fixes & polish