Cryptool
Cryptool Summary
Cryptool is a mobile Android app in Tools by nfdz. Released in Oct 2017 (8 years ago). It has about 68.6K+ installs and 257 ratings with a 4.11★ (good) average. Based on AppGoblin estimates, it reaches roughly 5.4K monthly active users . Store metadata: updated Aug 23, 2025.
Recent activity: 2.8K installs this week (4.8K over 4 weeks) showing exceptional growth View trends →
Store info: Last updated on Google Play on Aug 23, 2025 .
4.11★
Ratings: 257
Screenshots
App Description
Cryptography for humans - Encryption, Passwords, LAN, SMS, Offline, Light
Cryptool wants to help you to protect the information that matter most to you. We don't hide anything that's going on under the hood, we show the algorithms and data input/output as it is.
This is a non-profit open source solution and we are not interested in your data. Anyway, we do not ask you to trust, we ask you to **block** the Internet access, **review** the code, or even **build** the app yourself.
Main features:
- Lightweight application.
- Modern UI. Material You + support to light/dark theme.
- Multiple encryption configurations as conversations.
- Multiple message sources.
- Manual. Handle the input and output of the communication yourself.
- LAN. Communication within the connected Local Area Network. It is forgotten when the app stops.
- File. Use two files for communication. You can auto-sync and share the files for real time communication.
- SMS. Use your SMS provider. This option could have cost depending the contract with your provider.
- Keystore.
- Multiple algorithms and encryption configurations.
- Interoperable encryption.
- Clipboard control.
- Export/Import:
- Custom code protection.
- Filter data.
- Access code protection:
- Forget/Reset.
- Change.
- Biometric identification.
Know more: https://github.com/nfdz/Cryptool