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Cryptii vs Simple Text Crypt: catalog facts
Cryptii	Simple Text Crypt
Best for: People converting text and data or exploring common ciphers	Best for: Android users who want to encrypt short text messages
Free Free and open source under the MIT license.	Free Free and open source under the GPL-3.0-or-later license.
Web	Android
Chains conversion steps in a modular workspace Runs translations in the browser All 3 strengths for Cryptii Chains conversion steps in a modular workspace Runs translations in the browser Covers ciphers, hashes and common data conversions	Encrypts plain text for storage or sharing Uses Argon2 with a random salt to derive keys
It is designed for text and data conversions, not general-purpose secure file encryption.	The README advises against using it for serious data encryption
Web application	Downloadable app
Open source	Open source
License: MIT	License: GPL-3.0-or-later
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Sources for Cryptii cryptii.com Catalog checked October 8, 2026	Official website Full listing and sources Sources for Simple Text Crypt github.com/aidin36/simpletextcrypt Catalog checked October 8, 2026

“Not stated” means we have not confirmed it. Features can vary by device and plan.