Cryptool

3.2.3

nfdz

4.25

241 reviews

50,000+
Downloads

Free

Cryptography for humans - Encryption, Passwords, LAN, SMS, Offline, Light

About Cryptool

Cryptool is a tools app developed by nfdz.

How many times has Cryptool been downloaded?

Cryptool has been downloaded 69 thousand times. In the last 30 days, the app was downloaded 110 times.

What is the rating of Cryptool?

Cryptool is rated 4.25 out of 5 stars, based on 240 ratings.

Is Cryptool free?

Cryptool is free to download. The APK download size is 13.81 MB. The latest version available is 3.2.3. The last update was on August 23, 2025.

What are the requirements for Cryptool?

Cryptool requires Android 6.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play October 2017.

Description

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.

More data about Cryptool

Price	Free to download
Total downloads	69 thousand
Recent downloads	110
Rating	4.25 based on 240 ratings
Ranking	Not ranked
Version	3.2.3
APK size	13.8 MB
Number of libraries	15
Designed for Android	6.0+
Suitable for	Everyone
Ads	NO ads

App Performance Report

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Alternative downloads for the Cryptool app

Cryptool compared with similar apps

Common keywords of similar apps

Cryptool Sms Code Multiple Lan Light Algorithms Input Output Configurations Provider Protection Encryption Communication Data Access App Files

Keywords missing from this app

Secure File Encrypted Password End Device Encrypt Security Features Calls Key Messages Aes Privacy Passwords Notes Lock Messaging Axcrypt Enterprise Private Protect Recent Securely Share Cloud Video Send Manager Conversations Wormhole Voice Https Store Hide Open Cellcrypt Videos Phone Apps Backup Sharing Safe Cryptography

Google Play Rating history and histogram

160

Downloads over time

Cryptool has been downloaded 69 thousand times. Over the past 30 days, it has been downloaded 110 times.

Changelog of Cryptool

Show changelog

Developer information for nfdz

nfdz

cryptool@nfdz.io

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Comments on Cryptool for Android

★★★★☆ A Google user · Aug 6, 2018

Great app. Though. We use Android and Windows together more and more though, so it would be really useful if there was a simple compatible Windows app.

★★★★★ Stan The Man · Apr 21, 2026

This is fantastic tool. In this day and age Open Source app is always welcomed. By the way THANK YOU for GitHub SMS version. Keep up the good work 👍

★★★★★ Giuseppe C · May 21, 2018

It's fine. I don't know if it does cypher other than AES with 256bit keys, though.

★★★★★ Technical SharmaJi · May 19, 2020

Best tool ever. Love it... But a little bit slow... Do some work on this app. To correct RC4.

★★★★★ Mr. Hitchens · Jun 28, 2021

Really good tool. Needs an update! Very useful and well-designed. Recommend highly! PS, Instagram User...... seriously, if you don't understand how something works, that's YOUR fault! Read!

★★☆☆☆ Instagram User 333.01 · Dec 9, 2020

Quite useless. No way to really decipher either message with an external source. Only useful for yourself which is kinda sad, as I wanted to use this to make puzzles for other people. Oh well.

★☆☆☆☆ Bob A · Jun 29, 2024

AGAIN, "AES BANK GRADE/MILITARY" IS NSA BACKDOOR. M/AS WELL EAT BUGS W/THESE ALGOS. NOTHING SHOULD BE "REACHED FOR" AT THE TOP OF ANY APP, OTHER THAN COPYING SPECIFIC TEXT. ALL CONTROLS AT BOTTOM & ABOVE KEYBOARD. AMAZED U KNOW WHAT SCREEN PROTECTION IS, A LEGIT SIGN OF HOPE👉✅. ANONYMOUS MESSENGER IS A 🏆 STANDARD GUIDE IN SEVERAL AREAS. COPY/PASTE FROM REAL ENCRYPTION, SECURES CLIPBOARD & LAYERS CURRENT VERIFIED APP ENCRYPTION, ALSO HEDGES AGENT UPDATED DECODES. YOUR MANIFEST IS UNACCEPTABLE.

★★☆☆☆ Ali pooresmaeel · Nov 15, 2024

It is difficult to read the message and the received message cannot be decoded in the program.

Google Play Rankings for Cryptool

This app is not ranked

Technologies used by Cryptool

Cryptool is requesting 6 permissions and is using 15 libraries.

Permissions

Network communication

view network connections, full network access

System tools

draw over other apps

Extra

android.permission.USE_BIOMETRIC, android.permission.USE_FINGERPRINT, io.github.nfdz.cryptool.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

Ad network libraries

None found

Social libraries

None found

Development tools

Android Jetpack core

Android Architecture Components

Android Jetpack VersionedParcelable Android Jetpack Annotations Android Library Icon

Android Jetpack Annotations Android Jetpack Widgets Android Library Icon

Android Jetpack Widgets Android Jetpack AppCompat Android Library Icon

Android Jetpack AppCompat AndroidX Activity Android Library Icon

AndroidX Activity Android Activity Saved State Android Library Icon

Android Activity Saved State Kotlin Android Library Icon

Kotlin

AndroidX App Startup AndroidX Emoji / Emoji2 Android Library Icon

AndroidX Emoji / Emoji2 AndroidX ProfileInstaller Android Library Icon

AndroidX ProfileInstaller Jetpack Compose Android Library Icon

Jetpack Compose AndroidX Biometric Android Library Icon

AndroidX Biometric Realm Android Library Icon

Realm

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