GuitarTunePro is a free browser-based chromatic tuner for guitar, bass, and ukulele. It uses a device microphone to detect pitch and identify strings automatically. Supported instruments include 6-, 7-, and 12-string guitars, 4- and 5-string basses, and ukulele. Tuning presets include Standard, Drop D, Half Step Down, Full Step Down, Open G, Open D, Open A, and others. A real-time cent readout and visual peg guide show tuning, while reference tone playback and Beginner, Standard, and Pro accuracy modes provide additional options. The site says the tuner works offline after its first load as a Progressive Web App. Audio processing happens on the user’s device, and the site says audio is not sent to a server. Other tools include a chord finder, ear training, string tension tool, chord library, metronome, and vocal pitch detector. The Free plan is free, with no subscription or signup required and no ads on the core tuner. The maker describes it for players at different skill levels, teachers, and students.
Who it is for
It suits guitar, bass, and ukulele players who want a browser tuner, as well as teachers and students. The maker describes it for beginner, intermediate, and professional players.
What is good
- Supports multiple guitar and bass string counts.
- Includes alternate tuning presets.
- Works offline after its first load.
- Processes audio on the user’s device.
- Core tuner has no ads or signup requirement.
What to know first
- No free trial is offered.
- Real guitars and microphones were not tested in the site’s accuracy tests.
Verdict
GuitarTunePro pairs microphone-based tuning with several instrument presets and additional music tools. Its stated accuracy results come from synthesized signals, not tests with real instruments or microphones.
Get started with GuitarTunePro
- Visit https://www.guitartunepro.com/ on the web, Android, or iOS.
- Open the tuner and use a device microphone to tune.
- Use the core tuner without signing up.
- Load the tuner once to use it offline afterward as a Progressive Web App.
What the free plan stops at
The free plan covers the core tuner and has no subscription. The stated accuracy figures come from synthesized signal tests; real guitars and microphones were not tested.
Questions about GuitarTunePro
How much does GuitarTunePro cost?
The Free plan is free, with no subscription.
Is signup required?
No signup is required for the core tuner.
What platforms is GuitarTunePro available on?
It is available on Android, iOS, and the web.
Which instruments can it tune?
It supports guitar, bass, and ukulele, including several guitar and bass string counts.
Can the tuner work offline?
The site says it works offline after its first load as a Progressive Web App.
How does it handle audio?
Audio processing happens on the user's device, and the site says audio data is never sent to a server.
GuitarTunePro plans and pricing
All plansCompared on musical tuner apps
- Free plan
- Yes
- Alternate tunings
- Yes
- Intonation monitoring
- Yes
- Offline mode
- Yes
- Available platforms
- desktop



