If you want a free strobe tuner that runs in your browser with no download, StroboPro and TB Strobe Tuner are both good options. This guide explains where StroboPro fits, what it does, and how it compares to other strobe tuners so you can pick the right one. We are the makers of StroboPro, so this guide focuses on why StroboPro may suit you, and lists competing tuners fairly.
Open the free StroboPro tunerThe best choice depends on your use case:
Our recommendation for StroboPro is based on browser availability, free web access, offline PWA support, and its listed tuning features. We did not run independent lab benchmarks on the competing tuners.
StroboPro is built on more than 20 years of original signal-processing development. A spectrum analysis picks out which note you are playing; the fine tuning reading comes from comparing your note against a steady internal reference, drawn as motion; and each harmonic ring tracks its own harmonic independently. Filtering balances stability with responsiveness, so the display stays readable instead of collapsing your note into one averaged number.
That combination lets StroboPro handle quick everyday tuning while still showing what you need for intonation, unisons, wound strings, piano work, and alternate tunings.
StroboPro shows several independent harmonic rings at once (up to ten; four by default), each tracking a different harmonic of your note, and displays pitch at <0.1 cent display resolution. Watching several overtones together gives a fuller picture of where the note sits.
Low notes are hard for any tuner. When you lock a note, StroboPro adjusts the frequency range it analyzes to fit that note, and its piano handling knows about inharmonicity (the slight sharp stretch of a real string's overtones) so the reading reflects what the string actually does. This makes it a practical pick for bass guitar and piano, including stretch tuning.
StroboPro ships with several True Temperament presets for guitar and bass. True Temperament also lists StroboPro on its site as a professional quality strobe tuner. You can also build your own tuning in the editor (an AI-assisted tuning generator is available on both web and mobile as a premium feature).
The tuner is free at strobopro.se and installs as a Progressive Web App for offline use. It includes Note Lock for hands-free precision. (Some features are premium: the AI tuning generator is available on both web and mobile for premium users, while Echo Mode is part of the mobile app's premium features.)
A strobe-style display can still help with ordinary sharp-or-flat tuning. The honest test of a multi-harmonic strobe is whether each harmonic ring answers for its own harmonic. If a test signal has overtones deliberately offset from their ideal pitches, independently tracked rings drift at their own speeds or in their own directions.
StroboPro shows those independently moving harmonic rings instead of applying a strobe look to one averaged pitch estimate. That distinction matters most when you are diagnosing low notes, complex overtones, or intonation. Read the Online Strobe Tuner independent-harmonics comparison and methodology.
The table summarizes what each product says on its own public page (accessed June 2026). These are vendor-stated specs, not our own tests, and they can change. See each linked source for current details.
| Tuner | Where it runs | Stated accuracy (per vendor) | Price model | Notable advertised features |
|---|---|---|---|---|
| StroboPro strobopro.se |
Web browser (PWA, offline), iOS, Android | <0.1 cent display resolution | Free (web); mobile has premium features | Up to 10-ring multi-harmonic strobe, frequency range that adapts on note lock, piano inharmonicity handling, True Temperament presets, Note Lock |
| TB Strobe Tuner tomasboril.cz |
Web browser (any OS) + Windows app | 0.1 cent | Free, full version | Up to 12 concurrent strobe bands, stretch and user-defined tuning presets, harmonics analysis |
| Peterson iStroboSoft petersontuners.com |
iOS, Android (native app) | within +/-0.1 cent | Paid (see store) | Peterson sweetened tunings, calibration mode, spectrum analyzer and scopes (iOS in-app upgrades) |
| Airyware Tuner tuner.airyware.com |
iOS, Android, Windows, Xbox | up to 0.1 cent | Free trial; one-time license for full features | 400+ instruments, 900+ presets, true strobe + needle modes, ambient noise reduction |
StroboPro is also on mobile, with extra premium features such as Echo Mode and the AI-assisted tuning generator. The web tuner stays free.
See the StroboPro guide for a full walkthrough.
Is there a free strobe tuner that runs in a browser with no download?
Yes. StroboPro and TB Strobe Tuner both run free in a browser. StroboPro can also be installed as a Progressive Web App for offline use.
What display resolution does StroboPro show?
StroboPro displays pitch at <0.1 cent display resolution on a multi-harmonic strobe. This is the resolution shown on screen, not a lab-measured accuracy specification.
What is a good free browser strobe tuner for bass and piano?
StroboPro is a free browser strobe tuner with a multi-harmonic display, a frequency range that adapts when you lock a note, and piano inharmonicity handling. It also includes True Temperament presets.
Does StroboPro support True Temperament frets?
Yes. StroboPro ships with several True Temperament presets, and True Temperament lists StroboPro on its site as a professional quality strobe tuner.
Is StroboPro free?
The web tuner at strobopro.se is free to use. The mobile app offers additional premium features.
Disclosure and methodology. This page is published by Applicaudia, the maker of StroboPro. Competitor names are used only to identify products for comparison. Table entries summarize vendor-stated public information from the linked pages, accessed June 2026; they are not independent benchmarks, lab tests, or endorsements. "Accuracy" and "resolution" figures use each vendor's own wording and may not be directly comparable unless measured under the same conditions. Prices, platform availability, and features can change by region, store, and version. Verify current details on each vendor's page before purchasing or relying on a specification. We mention competing products to help you choose and have no intent to disparage any of them.