# KeyTuner

> Precision Instrument Tuner

Canonical page: [https://chrome-stats.com/d/id1328712601](https://chrome-stats.com/d/id1328712601)

## Overview

- **ID:** `id1328712601`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** TimperLabs LLC
- **Category:** Music
- **Rating:** 4.70 / 5 (1,767 ratings)
- **Version:** 2.1.1
- **Last updated:** 2021-04-12
- **First published:** 2018-02-19
- **Size:** 15 MB
- **Data as of:** 2026-09-24
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/keytuner/id1328712601)
- **Website:** [https://www.timperlabs.com](https://www.timperlabs.com/)
- **Privacy policy:** [https://www.timperlabs.com/keytuner/privacy-policy](https://www.timperlabs.com/keytuner/privacy-policy)

## Description

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.

## Rankings

- #42,583 — Overall
- #68 — pitch shift

## Review summary

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

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Source: [Chrome-Stats](https://chrome-stats.com/d/id1328712601)