Encrypts plain text using AES256
About this app
This app does not claim any permissions, so you can trust that it cannot send any of your private data to anyone.
Messages produced by this app are secure and, for example, can be confidently sent over a network. It uses AES in GCM mode with no padding for encryption. It uses Argon2 and a random Salt to derive a secure key from the entered passphrase. This is a very powerful encryption. It also encrypts its settings before storing them on the device.
However, the app might be vulnerable to some attacks. Although it is secure enough to stand attacks from non-expert crackers, e.g. normal users, should not be used for serious data encryption.
Upgrading from 4.x to 5.x
The encryption of the settings is changed. The app should be able to detect the old settings and upgrade them with the new encryption algorithm. However, it's a good idea to back-up your passphrase. (Well, it's generally a good idea to back-up encryption keys and passwords in a secure place).
If the app didn't work after upgrade, uninstall and install it again.
Licensed under GPL-3.0-or-later, by Aidin Gharibnavaz.
What's New in v6.0
Imported from the F-Droid repository index.
- + UI re-written using Jetpack Compose and MVVM approach (modern Android technologies)
- + Dependencies are upgraded
- + Functionality of the app didn't change
Version history
Mar 20, 2026 · 2.1 MB · Android API 26–36 · code 17
Imported from the F-Droid repository index.
- + UI re-written using Jetpack Compose and MVVM approach (modern Android technologies)
- + Dependencies are upgraded
- + Functionality of the app didn't change
SHA-256 3e05867bbaaa08a8e000d2cafdf2a0c6ee0236c01a32bd5eaf908c094ada0166
Sep 5, 2025 · 1.7 MB · Android API 26–36 · code 16
Imported from the F-Droid repository index.
- The encryption algorithm upgraded from old AES CBC to the new AES GCM.
- Key deriving algorithm also upgraded from PBKDF2 to Argon2.
- A "Legacy Decrypt" button added so user can decrypt messages that were encrypted
- with the older versions.
SHA-256 f73f9747ba35f7ec6f1e3868ab56b45a32344e56898d9bfb62fdf8219ff70e09
Dec 17, 2024 · 4.7 MB · Android API 19–34 · code 15
Imported from the F-Droid repository index.
SHA-256 899cb829115db280a2145a5500049d4bcfae0d2acc4aa9cabcfc68c8b682b954
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.aidinhut.simpletextcrypt 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, 5.1 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Simple Text Crypt 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 Simple Text Crypt, and a listing is removed when the evidence for it stops holding up.
Get Simple Text Crypt
Every source we list for com.aidinhut.simpletextcrypt 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
3e05867bbaaa08a8e000d2cafdf2a0c6ee0236c01a32bd5eaf908c094ada0166
Signing certificate
d53d1f83485fabe042a6a0997bcb130c7e496bb26466cde56107eb688a016d56
Permissions Required
What each permission lets Simple Text Crypt do. A highlighted one is worth a second look — not necessarily wrong, just worth asking whether this app needs it.
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.
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