CipherKit

Master classical and modern cryptography. Encode messages, decode mysteries, and solve challenging puzzles, all complete offline.

CipherKit is your all-in-one cipher lab, codebreaking toolkit, puzzle game, and private encrypted vault.

Explore 43 ciphers and encoding systems across more than 2,500 years of cryptographic history—from Caesar and Vigenère to Enigma, AES, ChaCha20, Morse Code, and more. Whether you want to encode messages, crack ciphertext, sharpen your puzzle skills, or store sensitive notes securely, CipherKit gives you powerful tools in one fully offline app.

Explore 43 Ciphers

Study and use ciphers across major categories, including: • Substitution: Caesar, ROT13, Atbash, Affine, Keyword, Baconian, Homophonic • Polyalphabetic: Vigenère, Beaufort, Autokey, Running Key, Gronsfeld • Transposition: Rail Fence, Columnar, Scytale, Route • Polygraphic: Playfair, Four-Square, Bifid, Trifid, Hill, ADFGX, ADFGVX, Nihilist, Polybius • Rotor & Mechanical: Enigma simulator, M-209, Jefferson Disk • Stream Ciphers: RC4, ChaCha20, Salsa20, One-Time Pad, Vernam, LFSR • Block Ciphers: AES, DES, Blowfish, Twofish, Camellia • Encoding Systems: Morse Code, Tap Code

Each cipher includes historical background, examples, weaknesses, and practical learning value.

Decode with Smart Analysis

CipherKit helps you break unknown ciphertext with built-in cryptanalysis tools: • Auto-detect likely cipher types • Frequency analysis • Index of coincidence • Brute force for supported ciphers • English plausibility scoring

Great for students, puzzle solvers, history buffs, and anyone who likes making their brain earn its keep.

Play Cipher Puzzles

Train your codebreaking skills with built-in challenges: • 5 difficulty levels from Easy to Diablo • Daily challenges with streak tracking • Puzzle packs by theme and difficulty • Stats, achievements, badges, and mastery tracking

It’s part learning tool, part puzzle obsession, and yes, that’s a dangerous combination.

Secure Vault

Store sensitive notes with real encryption, not classroom cosplay. • AES-256-GCM encrypted vault • Face ID / Touch ID / passcode protection • Folders, tags, favorites, and search • Local-only storage

OCR for Real-World Cipher Text

Capture text from photos, screenshots, or your camera and send it directly into CipherKit for decoding, encoding, or storage.

Private by Design

CipherKit is built for privacy from the ground up: • Works fully offline • No account required • No cloud sync • No tracking or analytics • No servers storing your data

Great For • Cryptography students • Puzzle lovers • Security enthusiasts • Teachers and educators • Privacy-focused users • Fans of history, codebreaking, and classic cipher machines

Download CipherKit and explore the world of encryption, decryption, cryptanalysis, and codebreaking—all from your iPhone, iPad, or Mac.