Offline AES-256-GCM text encryption with Argon2id
About this app
CryptoSafe is a lightweight, offline-first Android app for military-grade text encryption. Your data never leaves your device.
Features: • Strong Encryption: AES-256-GCM with Argon2id key derivation (128 MiB, 4 iterations) • 100% Offline: No internet permission needed. Your data never leaves your device • Screenshot Blocked: FLAG_SECURE prevents accidental leaks • Zero Storage: No logs, no cache, no database • Modern UI: Material 3 design with dark theme and smooth animations • Copy & Clear: One-tap copy and quick clear of sensitive fields
Perfect for journalists, activists, and anyone who needs to encrypt sensitive text messages without relying on cloud services or internet connectivity.
Licensed under MIT, by nemoXdev.
What's New in v1.2.2
Imported from the F-Droid repository index.
- • New languages added.
Version history
Jul 10, 2026 · 2.4 MB · Android API 24–35 · code 6
Imported from the F-Droid repository index.
- • New languages added.
SHA-256 b39fb7806e578ea40bc3fdecb7003256a2741c4dc42fbcbdeb75d5be26a2ac4b
Jul 1, 2026 · 2.4 MB · Android API 24–35 · code 5
Imported from the F-Droid repository index.
- • Translation and UI improvements.
SHA-256 c54a8aeef14f9da589c8987821a055cdc6c3ce16277c22acc2a7a67991e676a3
Will it run on your device?
92%
- Runs on a broad range of modern Android versions.
- Multiple CPU architectures are covered.
- Aligned with the latest Android target SDK expectations.
Installation Guide
Open Settings on your Android device
Go to Security → Unknown sources (or Install unknown apps)
Enable "Allow from this source" for your browser or file manager
Open the downloaded APK file from your Downloads folder
Tap "Install" and wait for installation to complete
Launch the app from your home screen
Make sure to re-enable Unknown Sources restrictions after installation for security.
How to install this safely
How to verify the file you downloaded
Before you install anything, confirm the file is the one described here. On a computer, run shasum -a 256 your-download.apk (macOS or Linux) or certutil -hashfile your-download.apk SHA256 (Windows), then compare the output character-for-character with the SHA-256 on this page. If a single character differs, the file is not the build we recorded — delete it.
What the signing certificate proves
Every Android app is signed with a private key that only its developer holds. The fingerprint on this page is a hash of the matching public certificate, and it proves continuity rather than identity: it tells you a build came from whoever signed the earlier ones. Android enforces this at install time — if a package claiming to be com.cryptosafe.app is signed with a different key, the system will refuse to install it over your existing copy. A fingerprint that changes between releases is worth pausing on, because a repackaged app that has been modified by someone else cannot keep the original signature.
How to roll back to an earlier version
If the current release misbehaves, 1.2.1 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall CryptoSafe first — which clears its local data unless you have a backup. Reinstall the older APK only if its signing fingerprint matches the build you already trust, and check the API range: an older release may target an Android version your device has moved past.
Why we list sources instead of hosting everything
The official store channel is almost always the right choice: it updates automatically and carries the publisher's own distribution guarantees. A direct APK is useful when a device has no store access, when a rollout has not reached your region, or when you need a specific version — and only when the publisher has authorized that copy. APKBrowse does not list pirated, cracked, or unauthorized rebuilds of CryptoSafe, and a listing is removed when the evidence for it stops holding up.
Get CryptoSafe
Every source we list for com.cryptosafe.app is legality-reviewed. Pirated or cracked builds are never offered.
Other sources
F-Droid listing
officialF-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.
Source code
verified publisherThe upstream repository this build is compiled from.
We check legality and signature continuity, but device behaviour still varies. Install at your own discretion.
App Information
Security Verification
We record provenance; we do not run malware scans. Verify the hash yourself before installing.
SHA-256 Hash
b39fb7806e578ea40bc3fdecb7003256a2741c4dc42fbcbdeb75d5be26a2ac4b
Signing certificate
06032001f6bca924ad0070c62e005700975faa09435be9ec864eb50284661c62
Permissions Required
Previous Versions
The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.
Report a problem with this listing
A listing is only as good as its corrections. If a source is broken, a signature looks wrong, or this app should not be here, tell the moderation team.