# Twelve-Tone Tuner — Simple And Easy Tuner.

> Professional vocal and instrument tuner with multiple modes and fine-tuning. (iPhone/iPad app by 小军 王.)

- Source: https://appshunter.io/ios/app/twelve-tone-tuner/id1448477362 (this page in markdown: same URL + `.md`)
- Developer: [小军 王](https://appshunter.io/developer/1343888593)
- Category: Music, Utilities
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings · 4 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.6 · 63 MB
- Languages: American English
- Released: 2019-01-12
- Data updated: 2026-08-21
- Monetization: ad-supported
- User reviews in markdown: https://appshunter.io/ios/app/twelve-tone-tuner/id1448477362/reviews.md

## What is Twelve?

This is a professional vocal tuning software, contains the most commonly used twelve-tone, as well as guitar, violin, bass, Ukulele and erhu instrument tuning interface, supports for tuner and sound two working modes, supports A4 frequency fine-tuning. We welcome feedback to help us to improve our app.

## Key features

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

## Recent user reviews (4 of 4)

All indexed reviews: https://appshunter.io/ios/app/twelve-tone-tuner/id1448477362/reviews.md

### 5/5 — 吹奏乐器首选

*2026-04-23*

对于吹奏乐器练习音准来说非常直观，有时候需要耳听扒谱也好用

### 5/5 — 免费，很好用

*2024-07-16*

试过很多，这个是最好用的

### 5/5 — 一个建议，望攻城狮采纳

*2022-01-03*

调音很准确，好用。建议增加屏幕旋转，可以横屏，谢谢

### 5/5 — 看看苹果手机扬声器使用不了

*2021-02-26*

声音不能外放听不见

## Frequently asked questions about Twelve

### What instruments can Twelve-Tone Tuner tune?

Twelve-Tone Tuner supports tuning for vocals, guitar, violin, bass, ukulele, and erhu. It is designed to be a versatile tool for a range of musical needs.

### Does Twelve-Tone Tuner offer different working modes?

Yes, Twelve-Tone Tuner supports both tuner and sound working modes. This allows users to choose the mode that best suits their tuning and practice requirements.

### Can I fine-tune the A4 frequency with Twelve-Tone Tuner?

Yes, the app allows for A4 frequency fine-tuning. This feature is crucial for musicians who require precise pitch adjustments for their instruments or vocals.

### What devices is Twelve-Tone Tuner compatible with?

Twelve-Tone Tuner is available for iPhone, iPad, and iPod. It is designed for Apple mobile devices.

### How often is Twelve-Tone Tuner updated?

The latest version of Twelve-Tone Tuner is 1.0.30, last updated on October 23, 2025. The app was initially released on January 12, 2019.

### What is the age rating for Twelve-Tone Tuner?

Twelve-Tone Tuner has an age rating of 4+. This indicates it is suitable for users of all ages.

### Does Twelve-Tone Tuner have ads?

Yes, Twelve-Tone Tuner contains advertisements. Users should expect to see ads while using the application.

### What is the user rating for Twelve-Tone Tuner?

Twelve-Tone Tuner has a rating of 4.4 stars based on 57 ratings. This suggests a generally positive user experience.

## Version history (last 5 releases)

### 1.0.30 — 2025-10-23

1，Add numbered musical notation on dial.

### 1.0.29 — 2025-04-23

1. add Zhongwan option.

### 1.0.20 — 2023-06-29

1. Add landscape view support.
2.Update functions modules.

### 1.0.19 — 2023-04-05

1.Update interface UI.
2.Update the function module.

### 1.0.12 — 2020-11-24

1.Fix user interface.
2.Add English language support.

## Apps similar to Twelve

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Guitar Tuner - Ukulele & Bass](https://appshunter.io/ios/app/guitar-tuner-ukulele-and-bass/id662890455) | 4.4 (7,464) | Free | Music |
| [Pitched Tuner - Tuning App](https://appshunter.io/ios/app/pitched-tuner-tuning-app/id1457541750) | 4.6 (5,144) | Free | Music |
| [Bass Tuner >>](https://appshunter.io/ios/app/bass-tuner/id1471438485) | 4.2 (705) | Free | Music |
| [Smart Metronome & Tuner](https://appshunter.io/ios/app/smart-metronome-and-tuner/id889571826) | 4.7 (59,289) | Free | Music |
| [Tuner Lite by Piascore](https://appshunter.io/ios/app/tuner-lite-by-piascore/id635828559) | 4.5 (9,949) | Free | Music |
| [Metronome+](https://appshunter.io/ios/app/metronome-plus/id434136233) | 4.5 (1,199) | Free | Music |

## More apps by 小军 王

- [音乐节拍器](https://appshunter.io/ios/app/id1024982031)
- [开运风水罗盘](https://appshunter.io/ios/app/id1099222377)
- [标注画笔](https://appshunter.io/ios/app/id1455756760)
- [顺心万年历](https://appshunter.io/ios/app/id1468896413)
- [乐器节拍器](https://appshunter.io/ios/app/id1498176872)

All apps by 小军 王: https://appshunter.io/developer/1343888593

## Related topics

[twelve-tone tuner](https://appshunter.io/ios/topics/twelve-tone-tuner)

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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 2026-08-21.*