PolyMetronome

PolyMetronome — Master Any Rhythm
PolyMetronome is a professional-grade metronome app built for musicians who want to go beyond simple click tracks. Whether you're practicing polyrhythms, working through complex subdivisions, or building custom rhythmic sequences, PolyMetronome gives you the tools to develop rock-solid timing.

Four Powerful Modes
Simple Mode — A clean, customizable metronome with flexible time signatures (2–32 beats), tap tempo, and visual beat indicators.
Poly Mode — The flagship feature. Run two independent metronomes simultaneously to practice polyrhythms like 3-against-4, 5-against-7, and beyond. Each track has its own beat count, volume, stereo panning, and sound.
Alphabet Mode — Practice using the Rhythmic Alphabet system with 32 subdivision patterns (16th-note and triplet-based), displayed with real musical notation. Create multi-bar loops that cycle through different patterns.
Score Mode — A full score editor for building custom rhythmic compositions with multiple sections, each with its own tempo, repeat count, subdivision pattern, and speed training settings. Organize scores in folders and sync them to the cloud.
Practice Tools That Make a Difference
Speed Trainer — Gradually ramp BPM from a start tempo to a target, with linear or stepped transitions, and loop/repeat options.
Bar Muting — Mute beats on a cycle to train your internal pulse. Includes a random mute mode with adjustable probability.
Practice Timer — Set a countdown so the metronome auto-stops after your session.
Practice Log — Track your sessions with dates, notes, BPM, and duration.
13 Sounds, Fully Customizable
Choose from sine tones, claps, hi-hats, bongos, shakers, cowbell, and claves — assignable independently to accents, main beats, and subdivisions. Per-track volume and stereo panning give you full spatial control.

Visual & Haptic Feedback
Fullscreen flash mode synced to each beat, with customizable colors and shapes
Haptic vibration with intensity control
Real-time beat position indicators with polyrhythm-aware layouts
Multi-Device Sync
Local network sync — Host/client architecture for synchronized playback across devices
Cloud sync — Scores, practice logs, and preferences backed up via Firebase
Built for Everyone
6 languages: English, Spanish, French, German, Japanese + System Default
Dark & Light themes with 6 color options
Cross-platform: Android, iOS, Desktop, and Web
Count-in, keep screen awake, BPM step size, and more in settings
Free + Premium
Simple Mode is free. Unlock Poly Mode, Alphabet Mode, Score Mode, Practice Log, and advanced settings with a subscription.