Nitpitch
Tuner for string instruments
Free
A tuner for violin, guitar, bass, and more: a dial per string, bowed double stops read as the beats you hear, sub-cent precision. No ads, no accounts, no tracking.
Nitpitch is a tuner for string players — violin, guitar, bass, and more. Born violin-first, for the way string players actually tune, and every bit as at home on a guitar or bass.
A DIAL PER STRING
Choose your instrument and every string gets its own dial, lit only by pitches near its own target. Bow two adjacent strings and the tuner reads them together, showing the interval as the beats you already listen for — the pulse rate IS the tuning error, and it stills as the fifth comes true.
BUILT FOR EARS THAT NOTICE
Sub-cent accuracy across the range, which is what tuning actually needs — a cent at A4 is about a quarter of a hertz. No octave errors: string instruments put more energy into their harmonics than their fundamental, which is what makes naive tuners jump octaves, and Nitpitch's detector is built to resolve exactly that. For the last fraction of a cent, a strobe band shows sub-cent error as motion — crawling sharp or flat, stationary when true.
YOUR ORCHESTRA'S A
The reference pitch steps a hertz at a time, A=390 through 466 — 440 by default, 442 or 443 for many European orchestras, 415 for baroque ensembles. Temperaments too: equal, or pure fifths — the default on bowed instruments, because that is how string players tune.
INSTRUMENTS YOU OWN
Each instrument remembers its tuning, reference and lock exactly as you left it. Favorites sit on the launch screen with one-tap preset pins. Save your own presets, rename them, pin them — and any shape can be strung up: a 9-string guitar is a creation choice, not a missing feature.
SHARE A TUNING
Any preset becomes a QR code or a link: a bandmate scans it and gets the whole setup — strings, reference, temperament. Nothing but the setup travels, and it is never sent to any server. A collection of ready-made tunings lives at nitpitch.app.
TUNE WITHOUT LOOKING
The Apple Watch app runs its own microphone and detection on the wrist — no phone needed — and speaks in haptics: taps at the string's real beat rate against its target, faster the further off you are, silence when it's true. A glance at the arc gives direction. It ships inside the iPhone app and installs standalone from the watch's own App Store; your instruments arrive over iCloud sync.
PRIVATE BY CONSTRUCTION
Audio is analyzed in memory and discarded: no recording, no history, nothing derived from it kept. The app makes no network connections — the Mac version does not even hold the entitlement to open one. Optional iCloud sync, off until you turn it on, moves only your setups between your own devices through your own iCloud account; there is no server of ours, and no ability to read what syncs.
FOR THE WHOLE SECTION
Violin, viola, cello, double bass, guitar, bass guitar — and a chromatic mode for everything else. Native on iPhone, iPad, and Mac; on the Mac, plugging an electric instrument into an audio interface gives the detector a cleaner signal than any microphone in a room.
Free and open source (MIT). No ads, no accounts, no tracking.
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The developer, Ville Misaki, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
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Information
- Seller
- Ville Misaki
- Size
- 4.3 MB
- Category
- Music
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - iPad
Requires iPadOS 16.0 or later. - Mac
Requires macOS 14.0 or later. - Apple Vision
Requires visionOS 1.0 or later. - Apple Watch
Requires watchOS 10.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Ville Misaki