Ahns Metronome

One precision metronome for practice, composition, and the stage.
Native audio engines — AVAudioEngine on iOS and Oboe (C++) on Android — schedule every tick at the sample level, so the beat never drifts at any tempo.

Six metronome modes
• Basic — Standard meters like 4/4, 3/4, 6/8, 9/8, 12/8 with 8th/16th/32nd and triplet/sextuplet subdivisions and accents. True 6/8 notation (dotted quarter = one beat).
• Advanced — Build patterns slot by slot: accents, off-beats, ghost notes, and rests, with subdivisions, swing, and multi-bar phrases on one screen. Reproduce jazz shuffle, Latin clave, and Balkan rhythms exactly.
• Polyrhythm — Any ratio — 2:3, 3:4, 4:5, 5:7 and beyond — with up to four simultaneous tracks. Made for progressive rock, contemporary classical, and African/Indian music.
• Metric Modulation — Alternate A/B meters over a shared pulse to shift tempo, from classic modulations (dotted quarter = quarter) to arbitrary ratios.
• Mixed — Enter and play songs whose meter changes bar to bar (5/8 → 7/8 → 4/4). Perfect for Stravinsky, metal, and prog-rock.
• Visual Pulse — Show the beat as a silent on-screen flash for loud rehearsal rooms or silent practice.

Precise tempo control
• 20–400 BPM in 0.1 steps via a haptic dial and keypad.
• Tap tempo with five calculation methods and a precision readout.
• A three-level beat indicator (accent / normal / ghost) shows exactly where you are.

Turn practice into progress
• Training courses that ramp the tempo automatically up to your goal, built in bars or seconds.
• A practice journal that logs every session automatically — and turns any log into a course.

Stage and gear
• Setlists that save BPM and meter per song and switch with a swipe on stage.
• MIDI: a clock master that sends standard MIDI Clock (24 PPQN) to external gear over USB or BLE, with live tempo changes while sending.

Practice together
• Share courses, presets, and practice logs to the community and download them right from the web.
• Create friends and groups to control who sees what.

Make it yours
• Nine sound sets and distinct accent/normal vibration.
• Beat light — flash a single beat or the full screen in any color.
• Five themes (Dark, Galaxy, Wood, Sapphire, Plum) and a wide layout for tablets and foldables.
• Korean and English. Use the core features right away, no account required.

Premium
Some advanced features — Training, MIDI, Setlist, and more — are Premium, available via in-app purchase or by watching a rewarded ad.