Easily encode and decode messages using simple substitution ciphers like Caesar and Atbash. Convert up to 2,000 characters at a time and save your cipher settings for later use. Ideal for fun educational purposes, not for serious secret messaging.






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Easily encode and decode messages using simple substitution ciphers like Caesar and Atbash. Convert up to 2,000 characters at a time and save your cipher settings for later use. Ideal for fun educational purposes, not for serious secret messaging.






This app offers a comprehensive suite of classic cryptography tools, including Vigenère and Transposition ciphers, to help users explore and potentially solve complex puzzles. It consolidates features from previous versions and provides detailed information on famous unsolved codes.




Securely encrypt and decrypt sensitive text data, including notes, messages, and cryptocurrency keys. Offers robust security with multiple strong encryption algorithms and advanced steganography features to hide data within images. Also supports secure password exchange using post-quantum cryptography.