Duometry vs Foldfish

How well can you judge an angle? Duometry challenges you to match a target angle as closely as you can. Fold a compatible device or adjust the on-screen dial, lock in your guess, and discover how close you came. Play solo over 5 or 10 rounds and aim for your best score. Pass one device between 2–8 players for a friendly competition. Everyone’s guesses stay hidden until the shared reveal. Find out who came closest, compare scores, and keep playing. Explore angles at your own pace with the dial. On hinge devices, Free Measure lets you read the device’s fold angle directly. Come back for a daily challenge with three targets. Different daily modes put your angle intuition and visual memory to the test. Play offline, with no account required.

Foldfish is the fishing game made for iPhone Duo — you play it by folding the phone. There's no joystick. The hinge IS your fishing rod. Unfold your iPhone Duo to load your cast, tap to throw the line, then hold to reel your catch in while you dodge the other fish. Open it up in book mode and the pond spreads across the entire screen — fish swim right across the fold. • Made for iPhone Duo — folding is the control • A pond across the whole open display • A living pond from sunrise to starlight • Dozens of fish — and a few surprises — to hook • Easy to pick up, satisfying to master • Plays on any iPhone with on-screen controls too Grab your rod — the fish are biting. Free, with optional in-app purchases.