GuitarTunePro
GuitarTunePro is a browser-based chromatic tuner for guitar, bass, and ukulele.
What GuitarTunePro is
GuitarTunePro is a browser-based chromatic tuner for guitar, bass, and ukulele. It listens through a device microphone and detects pitch, with automatic string detection, a live cent readout, and a visual peg guide. It supports 6-, 7-, and 12-string guitars, 4- and 5-string basses, and ukulele. Presets include Standard, Drop D, Half Step Down, Full Step Down, Open G, Open D, and Open A. Reference tones and Beginner, Standard, and Pro accuracy modes offer additional tuning options. GuitarTunePro also includes alternate tunings and intonation monitoring. Its Progressive Web App can work offline after its first load. Audio is processed on the user's device and, according to the site, is not sent to a server. The site reports synthesized-signal reading errors under 5 cents in quiet conditions and around 8 cents at worst in noisy conditions; it says real guitars and microphones were not tested. Other tools include a chord finder, ear training, string tension tool, chord library, metronome, and vocal pitch detector. The core tuner is free, requires no signup, and has no ads.
Good
- Supports several guitar and bass string counts.
- Includes alternate presets and intonation monitoring.
- Works offline after its first load.
- Audio processing stays on the user's device.
- Core tuner is free with no signup or ads.
Watch out
- Real guitars and microphones were not tested in the cited signal tests.
- Offline use requires the first load.
Who it suits
It suits players who want a browser tuner for guitar, bass, or ukulele, from beginners to professionals. Teachers and students may also find its tuner and additional practice tools relevant.
Verdict
GuitarTunePro combines instrument tuning with several practice and reference tools. Its listed signal results come from synthesized tests, not real instruments or microphones.
Plans and prices
From GuitarTunePro's own pricing page, checked 8 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Free | Free | Core tuner is free · no signup required · no ads on core tuner · Free; no subscription |
The facts
Each one read from GuitarTunePro's own pages, with the date it was checked.
What it does
- Accuracy limits
- In the site's synthesized signal tests, single reading error stayed under 5 cents in quiet conditions and had a worst case around 8 cents in noisy conditions; the page says it did not test real guitars or microphones.checked 8 Oct 2026
- Additional tools
- The site also offers a chord finder, ear training, string tension tool, chord library, metronome, and vocal pitch detector.checked 8 Oct 2026
- Audio privacy
- Audio processing happens on the user's device, and the site says audio data is never sent to a server.checked 8 Oct 2026
- Instruments
- It supports 6 string, 7 string, and 12 string guitars, 4 and 5 string basses, and ukulele.checked 8 Oct 2026
- Intended users
- The maker describes it as designed for beginners, intermediate and professional players, teachers, and students.checked 8 Oct 2026
- Offline use
- The site says the tuner works offline after its first load as a Progressive Web App.checked 8 Oct 2026
- Support
- The contact page says the maker typically responds to support emails within 24–48 hours.checked 8 Oct 2026
- Tuner features
- The tuner includes automatic string detection, a real time cent readout, a visual peg guide, reference tone playback, and Beginner, Standard, and Pro accuracy modes.checked 8 Oct 2026
- Tuning detection
- The live tuner uses a YIN inspired autocorrelation algorithm on 4096 samples at a 48 kHz sample rate.checked 8 Oct 2026
- Tuning presets
- Presets include Standard, Drop D, Half Step Down, Full Step Down, Open G, Open D, Open A, and more.checked 8 Oct 2026
- What it does
- GuitarTunePro is a browser based chromatic tuner that uses a device microphone to tune guitar, bass, and ukulele.checked 8 Oct 2026
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