KeyTuner

Name: KeyTuner
Rating: 4.7 (1729 reviews)
Author: TimperLabs LLC

By: TimperLabs LLC App

Precision Instrument Tuner

Overview

Version:

2.1.1

Last updated: 2021-04-12

Features & Capabilities

KeyTuner is a precision chromatic tuner designed for all instruments. It uses an advanced digital algorithm to deliver accurate tuning (0.1 cent) with a large, clear meter and a horizontal display that makes fine and coarse tuning easy to track.

Highlights include fast live tuning mode, tone generation, and a flexible temperament system (Just, Equal-Tempered, Strings). It supports transposing instruments, offers three levels of needle dampening, vibrato detection with a highlighted region around the needle, and concert pitch calibration for A4.

User Growth & Download Statistics

App Music & Audio Education

By:

TimperLabs LLC

Rating:

4.70

(1,729) 11 new ratings

Version:

2.1.1 Last updated: 2021-04-12

Version code:

841312229

Creation date:

2018-02-19

Compatible devices:

Size:

14.96MB

URLs:

Website ,Privacy policy

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-07-23

Compare stats and ranking:

Ranking

# 45,668 ▲ 18

Other rankings

#69 in pitch shift keyword 25 ▼ 19

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

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Developed by:

TimperLabs LLC

Apple Apps Store

https://apps.apple.com/us/app/keytuner/id1328712601

Website:

https://www.timperlabs.com

User Reviews

Across reviews, KeyTuner is celebrated as an easy-to-use, highly accurate tuner that works well on guitars, keyboards, harmonicas, and other instruments. Users praise its clean, ad-free UI and the ability to fine-tune with cents ranges and micro-adjustments, plus visible swing ranges per note. It’s described as reliable enough for professional use and portable on iPad or iPhone. A few notes of caution appear: on rare occasions the app can misread the target note, the Just Intonation mode isn’t perfect for all contexts, and piano tuning can be limited without octave-stretching features.

Pros

Very easy to use with a quick tune workflow
Highly accurate and precise tuning
Works across many instruments (guitar, piano, harmonica, etc.)
Clean interface with no ads; free or ad-free
Fine-grained control: cents ranges, micro-range, and swing range display per note

Cons

Notes can occasionally be misread, causing the tuner to jump to neighboring pitches (e.g., D vs D#)
Just Intonation is not accurate for all tunings
Piano tuning support is limited due to lack of octave-stretching features

Recent reviews

Plain language well labeled controls. Great as pitch pipe for Barbershop,or tuning a piano. Would like a slider on main screen to adjust note duration. Love this as a signal genrrater and free app. Very useful.