Fine Tuner - Precise & Fast

Contains adsIn-app purchases
5.0
59 reviews
Content rating
Everyone
5K+
Downloads
Content rating
Everyone
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About this app

🎵 Fine Tuner – A precise chromatic tuner for your string instruments

✨ Key Features
Fine Tuner is a chromatic tuner designed first and foremost for string instruments: guitar (classical, electric, acoustic), bass (4 and 5 strings), violin, viola, cello, double bass, ukulele, mandolin, banjo and harp.
Its chromatic detection also tunes many other instruments, including wind instruments.
It offers both standard and alternative tunings (drop D, drop C, open tunings…), especially for guitars and basses.
A chromatic mode allows automatic detection of all played notes.
New: discover the Circle of Notes — an interactive tool that lets you tune your string instrument by ear!
Listen to notes from octaves 1 to 7 with different instrument sounds, or explore major, minor, and many other chords.

🎻 Made for string instruments
Whether you play violin, viola, cello or double bass, Fine Tuner shows the note and the deviation in cents for accurate tuning, both arco and pizzicato.
Guitarists, bassists, ukulele, mandolin, banjo and harp players: tune every string quickly, even in a noisy environment.

⚙️ Operating Modes
Automatic mode: Detects notes automatically within the selected tuning range.
Manual mode: Allows manual selection of the note to tune using the note selector.
Circle of Notes: Play and listen to notes and chords to tune by ear.

🔍 Display Modes
Precision view: Default precision range of ±50 cents, with a needle indicating the position relative to the target frequency.
Graphical view: Default precision range of ±500 cents, with a graph to track tuning adjustments.
Expanded view: Displays a wider range up to ±1000 cents, ideal for visualizing large deviations.
Spectrum: Analytical view displaying the frequency spectrum in real time, allowing detailed observation of harmonics and sound distribution.

🛠️ Customization Options
Reference frequency: Adjustable between 400 Hz and 480 Hz, with a default value of 440 Hz.
Temperament selection: Choose between Equal Temperament, Pythagorean, or Meantone according to your musical style and instrument.
Deviation tolerance: Adjustable to set the desired tuning precision.
Note display type: Choose between standard or Latin notation.
Gain adjustment: Microphone sensitivity calibration for optimal note detection.
Accidental display: Option to show sharps (#) or flats (b).

🛠️ Custom Tunings
Create custom tunings with your own note frequencies.
• Manually define each note for advanced tuning control.
Support up to 99 notes per tuning.

📊 Note Display
The main detected note is displayed centrally, along with adjacent semitones for better reference.
Shows the target and current frequency, as well as the difference in cents for precise tuning.

📱 An Ergonomic Tuner
Fine Tuner adapts to your preferences, whether you use portrait or landscape mode.

🎵 A Free and Accessible Tuner
Fine Tuner is available for free with non-intrusive ads to support development.
You can also remove ads through an in-app purchase for a completely clean experience.
Updated on
Jun 15, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
App activity and Device or other IDs
This app may collect these data types
App activity, App info and performance, and Device or other IDs
Data is encrypted in transit
Data can’t be deleted

Ratings and reviews

5.0
57 reviews
Lynne Chapman
December 25, 2025
I used it to test the sounds of tuning forks used in sound healing. This app measures them precisely!
3 people found this review helpful
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Daniel Regehr
March 13, 2025
completely unintrusive and to-the-point, free as air and nice ui layout, 10000000x better than anything sponsored on the appstore
2 people found this review helpful
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UrionSoft
March 14, 2025
A huge thank you, Daniel! We're thrilled that you love our app so much. Your support motivates us to keep delivering the best experience possible.
Tamra Messer
February 14, 2026
great tuner with unique features
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What’s new

Added SF3 support
Added tuner sensitivity slider
Added compact landscape widget
Performance improvements
UI improvements and bug fixes