DaTuner Online
DaTuner Online is a browser-based chromatic tuner that uses a device microphone to detect pitch.
What DaTuner Online is
DaTuner Online is a browser-based chromatic tuner that uses a device microphone to detect pitch. It provides tuners for string, wind, and brass instruments, piano, and voice. Alternate tuning presets include Drop D, Open G, and DADGAD, while note lock keeps a target note visible as a tuning guide. You can set the A4 reference anywhere from 400 to 480 Hz. The tuner uses the McLeod Pitch Method with parabolic interpolation for sub-cent resolution. A browser strobe tuner helps reveal very small pitch differences and supports intonation checks. A pitch pipe plays sustained reference tones, with adjustable octave and A4 settings. Audio processing stays local in the browser; the site says audio is not recorded, stored, or transmitted and no account is required. The free plan costs nothing. Practical accuracy depends on microphone quality and room noise.
Good
- Supports string, wind, brass, piano, and voice
- Includes Drop D, Open G, and DADGAD
- Adjustable A4 reference from 400 to 480 Hz
- Local audio processing without recording or transmission
- Free plan at no cost
Watch out
- Accuracy depends on microphone quality and room noise
- Runs on the web rather than as a listed native app
- Uses Google AdSense and may use aggregate analytics
Who it suits
It suits musicians who need a web tuner for several instrument types, alternate tunings, strobe readings, or reference tones. It is also suitable for users who prefer local browser audio processing without an account.
Verdict
DaTuner Online combines broad instrument coverage with alternate tunings, strobe readings, and a pitch pipe. Its free browser delivery and local processing are useful, provided your microphone and room are suitable.
Plans and prices
From DaTuner Online's own pricing page, checked 7 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Free | Free | Online tuner and listed tools; pro features marked FREE |
The facts
Each one read from DaTuner Online's own pages, with the date it was checked.
What it does
- Accounts and personal data
- The site says it requires no accounts and does not collect personal information; its hosting provider may keep standard server logs.checked 7 Oct 2026
- Accuracy method
- The tuner uses the McLeod Pitch Method with parabolic interpolation for sub-cent resolution.checked 7 Oct 2026
- Advertising and cookies
- The site uses Google AdSense, and says a consent banner is shown where required before advertising cookies are set.checked 7 Oct 2026
- Alternate tunings
- Built-in alternate tunings include Drop D, Open G, and DADGAD.checked 7 Oct 2026
- Analytics
- The site may use aggregate analytics that it says do not identify users personally.checked 7 Oct 2026
- Instrument coverage
- The site lists tuners for string, wind and brass instruments, piano, and voice.checked 7 Oct 2026
- Note lock
- The tuner can lock a target note to guide tuning toward it.checked 7 Oct 2026
- Pitch pipe
- The pitch pipe plays sustained reference tones and lets users adjust octave and A4 reference.checked 7 Oct 2026
- Privacy
- Audio processing happens locally in the browser; audio is not recorded, stored, or transmitted.checked 7 Oct 2026
- Reference pitch
- The tuner lets users set A4 from 400 to 480 Hz.checked 7 Oct 2026
- Strobe tuner
- The browser strobe tuner is described as resolving differences down to a fraction of a cent and supporting intonation checks.checked 7 Oct 2026
- Support
- The privacy policy lists [email protected] for questions.checked 7 Oct 2026
- Usage limit
- The tuner says accuracy in practice is limited by microphone quality and room noise.checked 7 Oct 2026
- What it does
- DaTuner is a chromatic instrument tuner that runs in a browser and detects pitch using the device microphone.checked 7 Oct 2026
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