Instrument Tuner & Metronome Studio
A complete music practice studio directly in your browser. From instrument tuning and rock-solid metronome practice to harmonic reference tones and multi-step practice routines. Designed for phones on music stands.
- High-precision YIN pitch detection for chromatic & string-specific tuning (guitar, bass, ukulele, violin, winds)
- Lookahead Web Audio API metronome with sub-millisecond precision, odd meters, subdivisions, swing & polyrhythms
- Automatic Tempo Trainer to steadily ramp up BPM plus Random BPM practice drills
- Harmonic synthesizer reference tones (pure sine, piano-like, guitar-like, and additive organ)
- Focused practice countdown timer and customizable multi-step session routines with Screen Wake Lock
- 100% client-side Web Audio processing with zero microphone uploads (Zero-Upload / Privacy First)
🎵 Tune Your Instrument
🎙️ Microphone audio is processed entirely within your browser and is never sent to any server.
All essential music practice tools in one free, zero-upload web studio
No more jumping between separate tuner apps, metronome apps, and timers. Solasu Instrument Tuner & Metronome Studio consolidates your entire rehearsal workflow into a clean, lightning-fast browser studio.
Compatible with acoustic and electric guitars, 4- and 5-string basses, ukuleles, violins, violas, cellos, brass, and woodwinds. Microphone audio is analyzed in real time with the Web Audio API inside your browser—zero audio data is ever transmitted to any external server (Zero-Upload Privacy First).
High-Precision YIN Pitch Detection & Tunings
Estimates fundamental frequencies in real time using the robust YIN algorithm. Packed with presets for guitar (Standard, Drop D, Drop C, D Standard, Half Step Down, Open G/D/C), bass (4-string, 5-string Low-B, Drop D), ukulele (Standard C & Low-G), violin, viola, cello, contrabass, and full chromatic mode.
Choose between auto-string detection or manual target lock. Features visual needle and cent deviation (±50 cents), pitch stability history graph, virtual strobe tuner, and note-lock mode to eliminate jitter.
Precision Web Audio Metronome & Tempo Trainer
Built on the Web Audio API Lookahead architecture to eliminate JavaScript event loop timing drift, delivering rock-solid beats from 30 to 300 BPM.
Includes standard and complex meters (4/4, 3/4, 5/4, 6/8, 7/8, 9/8, 12/8), multiple subdivisions (eighths, sixteenths, triplets), swing ratio, and polyrhythm training. Use the automated Tempo Trainer to incrementally boost BPM over time.
Reference Tones, Practice Routines & Screen Wake Lock
Generate reference tones from 430Hz to 450Hz with customizable timbres including pure sine, acoustic piano overtone blend, plucked guitar, and additive drawbar organ.
Structure your daily rehearsals with customizable practice routines (e.g., Tuning 2m → Scales 5m → Metronome 10m → Repertoire 15m). Includes Screen Wake Lock to keep your phone active on the music stand.
Frequently Asked Questions (FAQ)
Is it completely free? Does it work on mobile phones?
Yes, 100% free with no account registration or app installation required. It is ergonomically optimized for mobile viewports (iOS Safari and Android Chrome), making it easy to set on your music stand or desk.
Is my microphone audio uploaded to any server?
Never. Microphone audio is processed entirely client-side using Web Audio API and JavaScript. No audio is recorded, saved, or uploaded to any remote server (Zero-Upload architecture).
Can it tune low-frequency instruments like a 5-string bass?
Yes. With a 4096-sample analysis window and the YIN pitch algorithm, it reliably tracks deep fundamental notes down to Low-B0 (~30.87 Hz) and E1 (~41.20 Hz).
Can I adjust the A4 concert pitch to 442 Hz?
Yes. You can switch between 440 Hz, 441 Hz, 442 Hz, 443 Hz, or dial any custom frequency from 430 Hz to 450 Hz in 1 Hz increments.
Where can I print blank music sheets or guitar TAB paper?
You can generate and print free music staves, guitar tabs, and graph paper using our companion tool, Printable Learning & Paper Studio.