Set a practice tempo with the phone's opening angle
Does AngleBeat work on iPhone Duo?
Yes, the developer says so: the angle you open the Duo to sets AngleBeat's metronome tempo, and a lock keeps it steady.
- App Store confirmedSora Katoh, the developer, in the App Store description for version 1.0 (released October 15, 2026), which says the opening angle of the iPhone Duo sets a practice tempo that you can lock and then play to.
Adapted for the fold
- Book · Partly folded
The angle sets the tempo
Half-fold the phone and the angle you open it to sets the metronome's tempo. Lock it to keep it steady while you play.
About AngleBeat
AngleBeat combines a metronome, tuner and score viewer. On the Duo, the angle you open the phone to sets the tempo, and a lock keeps it steady while you play. Other iPhones use a slider instead.
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 mentions iPhone Duo: "Set a practice tempo with the opening angle of iPhone Duo, lock it, then play." (version 1.0, released October 15, 2026).
App version: 1.0.
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 ↗
Related guides
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Is this your app?
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