BROWSER STROBE TUNER
Best Tuner for Luthiers? Strobe Bench Tool for Setup
A free browser strobe tuner for luthier setup work, with multi-harmonic rings, <0.1 cent display resolution, and True Temperament presets. Use it for setup, intonation, nut and saddle work, and final pitch checks. Native apps add the Piano Tuning Assistant for per-piano inharmonicity.
core tuner and preset tuning profiles free · <0.1 ¢ display resolution
Why a fine-grained display helps setup work
A luthier's work is difference-measuring. Whether you are comparing the 12th-fret harmonic to the fretted 12th to set saddle compensation, comparing the open-string pitch to the first-fret pitch to diagnose nut slot height, or comparing the 5th fret to the 7th harmonic when levelling frets, in every case you are watching for a fraction of a cent of difference between two readings, often while the string is still settling.
A needle tuner that resolves to 1 cent cannot show that difference cleanly. Half the saddle turns you make will move the pitch by less than the tuner can display, so you adjust blind. A strobe reading finer than 0.1 cent on screen shows every saddle move as a visible drift on the harmonic rings, and because the harmonic rings stop moving when the note is in tune, you can read the result while both hands are busy with a screwdriver or a file.
Setup work: nut slots, saddle compensation, fret levelling
Three setup tasks depend on a steady, fine-grained tuner.
- Nut slot height. Slot the nut too high and the open string reads in tune but the first fret goes sharp; slot it too low and the open string buzzes. StroboPro lets you read the open string, fret the first, and compare. If the first-fret note is more than a couple of cents sharp of the open, the nut slot is too high. File and re-check.
- Saddle compensation. Play the 12th-fret harmonic, then fret the 12th. If the fretted note is sharp, move the saddle back; if flat, move it forward. StroboPro holds a steady reading on a sustained tone so you can watch the cents change as you turn the screw. Detailed steps are in our intonation setup guide.
- Fret levelling. After crowning, check each fretted note along the string against the open-string reference. A strobe will show high or unlevelled frets as cents offsets that get worse the higher you go up the neck.
For all three, the multi-harmonic view is what does the work. If the fundamental reads in tune but a partial is off, you are looking at a string or fret problem, not a tuner problem.
True Temperament and non-equal fretting
True Temperament fretboards bend the equal-tempered grid into something sweeter in any key. The Swedish True Temperament system is the best known, but several luthiers now offer their own compensated-fret designs. To set up a True Temperament neck you need a tuner that can read the intended offsets directly, otherwise you will fight the frets all day.
StroboPro ships with built-in True Temperament presets for several popular configurations, including open-string and drop tunings. Select the preset and the strobe targets the offset cents for each string instead of the plain equal-tempered pitch. You can also build custom offsets in the editor for one-off compensated frets.
Piano work: inharmonicity-aware stretch tuning
Piano strings are stiff, so their overtones run slightly sharp of pure harmonic ratios. That is why a piano tuned to pure equal temperament sounds flat and lifeless in the treble. A real piano tuner stretches the treble sharp and the bass flat, by amounts that depend on the individual instrument.
StroboPro's Piano Tuning Assistant (a premium feature in the native iOS and Android apps) measures inharmonicity directly on each piano you tune, then builds a stretch curve for that specific instrument. The multi-harmonic strobe is what makes this possible, because you have to see how the partials sit relative to each other before you can calculate the right stretch. Read more in our piano tuner guide.
How to use StroboPro on your bench
- Open strobopro.se, tap the Tap to Tune button (the one with the microphone), and allow mic access.
- For setup work, mount the phone on a small stand a few inches away, or use a clip-on pickup into a wired interface.
- Pick the instrument preset that matches the bench job (guitar, bass, ukulele, violin, True Temperament, or a custom tuning).
- For intonation, follow the harmonic-versus-fretted workflow above and in the intonation guide.
- For piano work, switch to the native app and use the Piano Tuning Assistant to measure inharmonicity before stretching.
- The web tuner installs as a PWA, so once you have it open you can use it offline - useful for a workshop with patchy Wi-Fi.
A note on cost and competition
A hardware bench strobe is a fine tool and many shops own one, and a Plek machine takes fretwork to a level no tuner can match. StroboPro does not replace either of those in a high-end shop, but it does replace the cheap needle tuner most builders keep in their pocket, and it is free. The cents resolution and the True Temperament presets are the headline features for setup work. Read more on what makes a strobe different on the StroboPro blog.
Free and offline
The web tuner installs as a Progressive Web App, so you can use it on the bench with no network. The native iOS and Android apps add premium features luthiers tend to want: Piano Tuning Assistant, Echo Mode for vision-impaired clients, an AI tuning generator for one-off instruments, and cloud sync across shop devices.
Read "Best Tuner for Intonation: Setting Guitar Intonation with a Strobe Tuner" on the blog →
Related guides
- Strobe tuner comparison
- Best tuner for intonation
- 0.1 cent accuracy
- Best strobe tuner
- Best guitar tuner app
- Online chromatic tuner
Frequently asked questions
What is the best tuner for guitar setup work as a luthier?
A strobe that reads finer than 0.1 cent on screen. StroboPro is a strong pick because it compares each tracked harmonic against its own reference. The multi-harmonic display holds steady on a sustained tone, and a partial that drifts while the fundamental reads in tune still shows up, instead of hiding inside one number. Watch the cents drift as you file a nut slot or turn a saddle screw. It is free - open strobopro.se, tap the Tap to Tune button, and allow mic access. Pair it with our intonation guide for the workflow.
Do I need a strobe tuner, or is a needle good enough for intonation?
For setting intonation, a needle that resolves only to 1 cent is too coarse. Saddle moves of half a millimetre can shift pitch by less than 1 cent, which a needle cannot show. A strobe reading finer than 0.1 cent on screen shows every move clearly. This is display resolution, not a lab accuracy claim.
Does StroboPro support True Temperament fretboards?
Yes. StroboPro ships with built-in True Temperament presets for several popular configurations, including open-string and drop tunings. You can also build custom offsets in the editor for one-off compensated-fret designs.
Can StroboPro help tune pianos in a shop?
Yes. The native iOS and Android apps include a Piano Tuning Assistant that measures inharmonicity on each individual piano and builds a stretch curve for that instrument. The web tuner is free for basic chromatic checks; the inharmonicity-aware stretch is a premium feature in the apps.
Support independent development with Pro
I keep the core StroboPro tuner free. Pro supports ongoing work on Cloud Sync, AI Tuning, and the Piano Tuning Assistant.
Published by Applicaudia, the maker of StroboPro. Resolution figures describe the on-screen display, not lab-measured accuracy specifications. Bench directions (nut height, saddle travel, fret level) vary by instrument and bridge design; always re-check pitch after each mechanical change.
Open the tuner