About this app
A square next to a circle? A red triangle on the left? One of each color? There’s a secret rule to determine which sequences of 3 colored shapes are allowed and which are not. Using your powers of inductive logic, you must predict whether each new sequence fits. Collect evidence, adjust your predictions, and guess the rule–it’s a lot like the scientific method! Guess the Rule is easy to learn but difficult to master. Start with simple rules, but if you want to spice things up, try double rules joined by “and” or “or”. You’ll find endless challenges, some of which are absolutely diabolical! Play alone or with friends! Compete for daily high scores, or see who can guess the rule fastest in a pass-and-play match. Features: -Endless variety of possible rules -Quick sessions -Simple 2-button interface -2 levels of difficulty* -Pass and play with up to 4 players* -Daily leaderboards (requires iOS 14) -No ads -Accessible with VoiceOver *A one-time in-app purchase is required to unlock Hard Mode and multiplayer.
Latest release
What’s New
-Guess the Rule is now free to play, with a one-time in-app purchase to unlock Hard Mode and multiplayer -New kinds of rules
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Aug 22, 2026 · 12:14 AM Free
Screenshots
