A party game for one Duo: take turns folding it to a target angle, the reading hidden
Does Guess Angle work on iPhone Duo?
Yes. Its App Store page says that on iPhone Duo you fold the phone to the target angle. The developer's video shows the game on a rendered phone, not running in the simulator.
- App Store confirmedDewei Kong, the developer, in a submission to FoldHunt on October 28, 2026, with a video on YouTube and a post on Reddit. The App Store seller is 德威 孔. Guess Angle came out on October 23, 2026, and its App Store description says that "On iPhone Duo with available hinge readings, unfold the phone and physically fold it to the angle you think is right." The video shows the game on a rendered phone.
Adapted for the fold
- Book · Partly folded
Fold to the target
Pick a target such as 130°, then each player in turn folds the phone to the angle they think is right, with the live reading hidden. After the last turn, everyone's angle is revealed.
- Open · Inner display
Target and turns on the open phone
Open, the inner display shows the target, whose turn it is and the button to lock in.
About Guess Angle
Guess Angle is a party game by Dewei Kong for one phone and up to eight people. Choose a random target or type one from 0° to 180°, then take turns trying to match it by eye while the live value stays hidden. When everyone has locked in, the results show each recorded angle and how far off it was. On iPhone and iPad you drag a pointer; there is also a practice mode with the reading shown. It costs $0.99, with no ads or in-app purchases.
On iPhone Duo, the phone is the pointer: unfold it, then fold it to the angle you think is right, and the game reads the angle from the hinge. The developer’s video shows the game on a rendered Duo, so we list it as App Store confirmed until we’ve seen it running.
Evidence reviews
What we checked, when, and what the evidence establishes. Each record preserves the support label at that check.
· App Store page reviewed
App Store confirmed · iphone-duo
The App Store description for version 1.1 (released October 25, 2026) mentions iPhone Duo: "On iPhone Duo with available hinge readings, unfold the phone and physically fold it to the angle you think is right."
App version: 1.1.
Store text only: we haven't seen the app running, and the store page doesn't show how each pose is used.
View reviewed evidence ↗
Watch it unfold
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Is this your app?
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<a href="https://foldhunt.com/apps/guess-angle/"><img src="https://foldhunt.com/badges/featured-on-foldhunt.svg" alt="Featured on FoldHunt" width="220" height="54"></a>Need to update the listing? Email the editor.
Sources: Guess Angle on the App Store (apps.apple.com) · Guess Angle on YouTube (youtube.com) · Dewei Kong on Reddit (reddit.com)
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- Open