AngleBeat

Set a practice tempo with the opening angle of iPhone Duo, lock it, then play. Open today’s score, find your tempo, and begin. AngleBeat brings a metronome, tuner, and score viewer into one focused practice space. Choose 30–300 BPM, 1–12 beats per bar, a first-beat accent, and three click sounds. Lock a comfortable tempo or adjust it with the slider on a standard phone. Switch to the tuner and play one note at a time. Microphone audio is analyzed on your device without recording or transmission. Import one image or PDF score from Files, zoom in, and turn PDF pages. Your score stays ready for the next practice and can be removed in the app. Requires iOS 17 or later. A $4.99 paid download includes every feature. No ads or subscriptions.