New : Cipher Chronicle is now on Android Discover
Android app · Coming soon
Type the message or photograph its symbols: Cipher Breaker reads it, analyzes it step by step, guesses which cipher produced it and tries to break it, right on your phone.
How it works
Four steps, each one explained on screen.
Photo
One photo is enough: Breaker spots each glyph and recognizes the alphabet among a hundred (dancing men, Zodiac, Pigpen, runes, Templars…). A misread glyph is fixed with one tap; with a known-key alphabet, the plaintext shows right away.
Analysis
Letter frequencies compared with five languages, index of coincidence, likely key length, Kasiski test, telltale patterns: each step says what it found, in plain words.
Identify
Breaker ranks the ciphers that may have produced the message, then lists the breaking methods it is about to try.
Crack
Over 35 breaking methods: Caesar, affine, Vigenère and its family, substitution, transpositions, Playfair, Hill, ADFGVX, Enigma… Follow the breaking live as the key and the text appear, ready to check.
Free version
10 analyses and 5 photos a day, with the essential methods.
Full version
One-time purchase (€3.99 in France): every method, no limits.
Privacy
The app has no permission to access the Internet: everything runs on the phone.
No sign-up, no ads, no analytics.
The app only sees the photo you pick, and sends it nowhere.
No backup or transfer of your messages to an online account.
The app is being published on Google Play. This page will be updated as soon as it is out.
Cipher Chronicle encrypts your own messages (a keyboard that encrypts as you type). Cipher Breaker does the opposite: it starts from a message whose cipher and key you don’t know, and tries to crack it. Cipher Chronicle
No. A short message, or one encrypted with a modern method, may resist. Breaker then shows what the analysis revealed and the most likely ciphers, so you can carry on by hand.
Not for now. The website’s decryption workshop works in any browser. Decrypt in the browser
Meanwhile, the website workshop decrypts a message in your browser once you know the method.
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