If you compete in Science Olympiad Codebusters, you already know the uncomfortable truth: the students who win aren't the ones who memorized the most theory. They're the ones who have solved hundreds of ciphers, so the patterns jump off the page. Cipher Munch was designed for exactly that kind of volume practice. It's a cryptogram app built by and for people who care about the competition formats.
Every Codebusters cipher format, in one app
Cipher Munch covers the classical-cipher events that appear on Division B and C tests:
- Aristocrats: classic monoalphabetic substitution with spaces preserved, including K1 and K2 keyword variants
- Patristocrats K1 & K2: letters regrouped into 5-letter blocks with no word boundaries
- Xenocrypts: Spanish-language Aristocrats on the 27-letter alphabet, Ñ included
- Caesar: using the forward-shift convention you'll see in competition materials
- Affine and Atbash: plus visual ciphers (Pigpen, Dancing Men, Knights Templar) for warming up
Every puzzle hides a real quote, the same way competition questions do, so you also build the "this word is probably THE or THAT" instincts that only come from quote-shaped plaintext.
Train with helpers on, compete with them off
The core of the app is a set of helper tools you can toggle per cipher, which makes it work at any level:
Open any puzzle → Options → Display. Toggle letter frequencies, multiple-letter highlighting, error highlighting, and translation tables independently for each cipher type. Your settings stick, per cipher.
A training progression that works well:
- Learning a cipher: everything on. Frequencies under each letter, matching cells highlighted, errors flagged when the board is full.
- Getting comfortable: turn off error highlighting. Now you have to check your own work: exactly what the test demands.
- Competition mode: frequencies off too. You're now solving under test conditions, and your solve times tell you honestly where you stand.
Make it feel like the real test
Codebusters is a pencil-and-paper event. When you want practice that matches the medium, print the puzzle:
Print / Share lets you print any puzzle with the frequency table included or hidden, with or without your current answers, and share it as a PDF: a one-tap way to recreate the paper test setup at home or at practice.
Measure readiness, not vibes
The Statistics screen tracks solves per cipher type, fastest and average times, and how many puzzles you solved with hints. Before a tournament, look at your average time on hint-free Aristocrats: that number is your realistic pace, and it tells you how many questions your team should assign you on test day. The daily streak on the main menu keeps the habit alive between tournaments.
What it costs
Every cipher type has a free Starter pack, so a full training loop costs nothing to try. When you need more volume, you can unlock a single volume of one cipher, subscribe to one cipher type, or get All Access. There are no ads either way: nothing interrupts a timed solve.