# Twelve vs APTuner

The clearest difference is ads: APTuner at none against Twelve's shown. APTuner also leads on monetization model (free vs ad-supported) and ratings volume (6 vs 1). On price, rating, review sentiment and update cadence there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Twelve against 5.0 for APTuner. That said, the two scores are not equally well evidenced: APTuner has 6 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Twelve ships an update every 5 months, APTuner every 3 months. The most recent releases landed on October 20, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Twelve | APTuner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/twelve-tone-tuner/id1448477362/reviews) | [5.0 (6 ratings)](https://appshunter.io/ios/app/aptuner/id6449228938/reviews) |
| Number of ratings | 1 | **6** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Every 3 months** |
| Monetization | Ad-supported | **Free** |
| Size | 26 MB | 26 MB |
| Requires iOS | 26.0 | **15.6** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [小军 王](https://appshunter.io/developer/1343888593) | [Joseph Broms](https://appshunter.io/developer/688111413) |

## What reviewers say

### Twelve

[App page](https://appshunter.io/ios/app/twelve-tone-tuner/id1448477362)

A professional vocal and instrument tuning application. It offers interfaces for various instruments and supports tuner and sound modes with fine-tuning capabilities.

**Highlights:** Vocal tuning, Instrument tuning (guitar, violin, bass, ukulele, erhu), Tuner mode, Sound mode, A4 frequency fine-tuning

**Features:** Vision Pro support

**In-app purchases:** none


### APTuner

[App page](https://appshunter.io/ios/app/aptuner/id6449228938)

This application provides highly accurate chromatic tuning for a wide range of instruments. It features a clear interface, customizable settings, and the ability to detect note deviations with precision.

**Highlights:** 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

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Twelve free?

Twelve is free to download, with no in-app purchases.

### Is APTuner free?

APTuner is free to download, with no in-app purchases.

### Which has better reviews, Twelve or APTuner?

Twelve and APTuner are both rated 5.0 out of 5 on the App Store, from 1 and 6 ratings respectively.

### Do Twelve or APTuner have ads?

Twelve shows ads; APTuner does not.

### Which is updated more often, Twelve or APTuner?

Twelve ships an update every 5 months, and APTuner every 3 months. Most recently, Twelve was updated on October 20, 2026 and APTuner on October 1, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*