BeatBook: Drum Metronome

BeatBook is a precision metronome for drummers who take practice seriously.

It nails the basics: rock-solid timing, clear sound, simple controls. Then it adds the tools drummers use every day. Tempo ramp drills to push your speed. Polyrhythm patterns for independence work. Unlimited setlists so every song has its own tempo, time signature, and notes. Apple Watch haptic clicks so you can practice silent in the middle of the night without bothering anyone.

KEY FEATURES

The Metronome

• BPM from 30 to 300
• Accent on beat one, custom accents per beat
• Subdivisions: quarters, eighths, triplets, sixteenths, dotted notes
• Tap tempo with one finger
• Time signatures from 1/4 through 12/8 plus custom

Tempo Ramp Drills

• Start slow, end fast: set start BPM, end BPM, ramp duration
• Step mode: hold each tempo for a fixed number of bars before stepping up
• Designed for double bass speed work and chops drills

Polyrhythms

• Two independent layers, each with its own subdivision
• 3:4, 5:7, 2:3, 4:5, and fully custom ratios
• Each layer has its own sound so you can hear both at once
• Visual indicators that fire in sync with the audible click

Setlists

• Save unlimited songs with tempo, time signature, subdivision, and notes
• Order songs into setlists for rehearsals and gigs
• Cloud sync across iPhone, iPad, and Apple Watch

Apple Watch

• Haptic click on your wrist with no audio needed
• Independent metronome on the Watch even when iPhone is asleep
• Control playback from the Watch face

Built for Accuracy

• Sample-accurate scheduling using AVAudioEngine
• Latency compensation for Bluetooth headphones and external speakers
• Engineered for under 5 ms jitter on modern iPhones
• Consistent timing even under load

WHO IS IT FOR

Drummers who want a serious practice tool, not a toy. Guitarists, bassists, pianists, and anyone working with a click track will feel at home here too. If you need a metronome that does exactly what you tell it to do and nothing else, this is it.

PRIVACY

BeatBook stores your setlists locally and syncs them to your own iCloud account. We do not collect personal data. Anonymous usage signals help improve the app and can be turned off in Settings.

REQUIREMENTS

iPhone or iPad on iOS 18 or later. Apple Watch on watchOS 11 or later for haptic practice features.

Questions or feedback? Reach us at support@mightys.app.