# APTuner — Chromatic Tuner

> Accurate chromatic tuner for instruments with customizable settings. (iPhone/iPad app by Joseph Broms.)

- Source: https://appshunter.io/ios/app/aptuner/id6449228938 (this page in markdown: same URL + `.md`)
- Developer: [Joseph Broms](https://appshunter.io/developer/688111413)
- Category: Music
- Price: Free
- Rating: 5.00/5 from 6 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.6 · 26 MB
- Languages: American English
- Released: 2023-06-07
- Data updated: 2026-08-20
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/aptuner/id6449228938/reviews.md

## What is APTuner?

Features: 
+ Automatically detects the note and cent deviation for a wide variety of instruments 
+ Accurate up to 1/1000 semitone (0.1 cent) 
+ High contrast, high visibility user interface 
+ Instrument presets
+ User selectable noise threshold 
+ Settable A4 frequency 
+ Frequency table
+ Select and edit historical temperaments

## Key features

- Automatic note and cent deviation detection
- Accurate to 1/1000 semitone
- High contrast, high visibility UI
- Instrument presets
- User selectable noise threshold
- Settable A4 frequency
- Historical temperaments

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/aptuner/id6449228938/reviews.md

### 5/5 — Great app

*2026-04-29*

Amazing tuner, I use it for guitar mostly, and turn it on to chromatic mode. Works really good. One issue is that after two weeks or so the app completely stopped working. It might be something with my phone but thats really the only issue I’ve ever had with it. I’ll try uninstalling an reinstalling it but besides that it works great.

### 5/5 — Excellent free tuner

*2025-01-22*

Accurate and great user interface

## Frequently asked questions about APTuner

### How accurate is APTuner?

APTuner is highly accurate, detecting deviations up to 1/1000 semitone (0.1 cent). This precision ensures your instrument is perfectly in tune.

### What instruments can APTuner tune?

APTuner is designed to detect notes and deviations for a wide variety of instruments. It also includes instrument presets to further optimize tuning.

### Does APTuner have ads?

No, APTuner is ad-free, providing an uninterrupted tuning experience for all users.

### What devices does APTuner support?

APTuner is available on iPhone, iPad, and iPod devices, offering a consistent experience across Apple's mobile ecosystem.

### How often is APTuner updated?

APTuner was last updated on July 2, 2024, indicating active development and support from the developer.

### What is the age rating for APTuner?

APTuner has an age rating of 4+, making it suitable for a broad audience of young musicians and older users alike.

### Can I adjust the tuning reference frequency in APTuner?

Yes, APTuner allows you to set the A4 frequency, which is useful for musicians who need to tune to a specific reference pitch.

### Does APTuner support custom temperaments?

APTuner allows you to select and edit historical temperaments, providing flexibility for musicians who use non-standard tuning systems.

## Version history (last 5 releases)

### 5.3.0 — 2026-08-14

Introducing Strobe mode in beta, with a true eight-octave stroboscopic display.

This release also improves iPhone audio startup reliability and light/dark mode visibility throughout the app.

### 5.2.4 — 2024-07-02

Application can now keep phone from going to sleep automatically while tuning

### 5.2.3 — 2024-06-25

Support for instrument specialization and presets.

### 5.1.4 — 2024-02-06

Visual tweaks and some performance improvements

### 5.1.3 — 2024-01-28

Adding proper temperament support with the ability to edit and visualize differences between different intervals.  
Support for enharmonics.
Added a table to display all computed frequencies

## Apps similar to APTuner

| App | Rating | Price | Category |
| --- | --- | --- | --- |
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| [Pano Tuner Lite](https://appshunter.io/ios/app/pano-tuner-lite/id449780743) | 4.7 (7,639) | Free | Music |

## Related topics

[peterson tuners](https://appshunter.io/ios/topics/peterson-tuners)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-20.*