# Solo Harmony — Ad-lib Harmony with solo vocal

> Real-time vocal harmony synthesizer for solo singers. (iPhone/iPad app by Masanori Katsuta.)

- Source: https://appshunter.io/ios/app/solo-harmony/id6446134271 (this page in markdown: same URL + `.md`)
- Developer: [Masanori Katsuta](https://appshunter.io/developer/320172788)
- Category: Music, Entertainment
- Price: $0.99
- Rating: 4.00/5 from 3 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 1 MB
- Languages: American English, Japanese
- Released: 2023-03-11
- Data updated: 2026-08-29
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/solo-harmony/id6446134271/reviews.md

## What is Solo Harmony?

Automatically harmonizes with your solo singing.

◆ Equipped with an [Ad-lib Harmony Mix] engine, allowing you to synthesize harmony parts with ad-lib performances while singing.
◆ Use the ad-lib keyboard to mix up to 5 parts simultaneously in real-time.
◆ The subtle pitch shift setting allows you to produce a chorus effect.
◆ Supports recording and playback of synthesized sounds.
◆ Supports not only microphone input, but also recording files and shared files from other apps.
◆ You can mix harmony parts while playing audio files.
◆ Useful for practicing karaoke harmony by playing the original vocals quietly and the harmony parts loudly.
◆ Recorded files can be sent to AirDrop, SNS, etc. as shared files.

● Notes:
・To prevent howling, the app automatically disables the microphone input signal while playing audio files.
・When using Bluetooth earphones, it may not be possible to monitor the sound being recorded.

## Key features

- Ad-lib Harmony Mix engine
- Real-time multi-part mixing
- Subtle pitch shift for chorus effect
- Recording and playback
- Input from microphone, files, and other apps
- Karaoke practice mode

## Chart rankings

- #96 in Top Paid · Music (US App Store)

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/solo-harmony/id6446134271/reviews.md

### 4/5 — A great idea

*2026-04-23*

All I need is something that isolates a single harmony to a song so that I can practice to it. It’s incredibly difficult to find. This app actually does it. My only complaint is that the speaker turns off while the loop is playing—I don’t understand the purpose to this. I need to be able to hear the loop with more than just the phone sound. I also tried connecting to an external speaker and it doesn’t work. So close. Why not let me decide if I want to use the speaker option or not?

### 1/5 — 既存の音声ファイルが使用できない

*2025-08-28*

既存のデータを元にハモリを作る事が出来ない。このアプリ上でマイクを使ってしか新規の録音データが作れない。既存のデータが読み込めるようになれば評価の星は上がります。

**Developer response:** このたびはアプリをお使いいただきありがとうございます。
既存データの読み込みはもちろん可能です。例えば、ホーム画面のボイスメモやガレージバンドなど他のアプリで録音したり制作したりした音声データを、iOSのファイル共有機能を使ってこのアプリにインポートできます。お試しください。

### 3/5 — iOS17

*2023-09-24*

iOS17.0のアップデートによりアプリに曲を送る（ファイル共有）ことができないため、実質アプリの使用ができません。
修正をお願いします。

**Developer response:** この度はアプリをお使いいただきありがとうございます。
iOS17でのファイル共有の不具合は、アップデートにより修正いたしました。

## Frequently asked questions about Solo Harmony

### What is Solo Harmony?

Solo Harmony is a music application that automatically synthesizes harmony parts with your solo singing in real-time. It allows you to mix up to five harmony parts and adjust pitch for chorus effects.

### How much does Solo Harmony cost?

Solo Harmony is a paid application priced at $0.99. This one-time purchase grants you access to all its features.

### What devices is Solo Harmony compatible with?

Solo Harmony is compatible with iPhone, iPad, and iPod touch devices. It requires iOS 4.0 or later.

### Does Solo Harmony have ads?

No, Solo Harmony does not contain advertisements. It is a completely ad-free application.

### Can I use Solo Harmony offline?

While the app synthesizes harmonies in real-time, its core functionality does not require an internet connection for processing. However, sharing recorded files may require connectivity.

### How often is Solo Harmony updated?

The latest version, 1.0.3, was updated on November 29, 2025. The developer provides regular updates to improve functionality and address any issues.

### What is the age rating for Solo Harmony?

Solo Harmony has an age rating of 4+, making it suitable for users of all ages. The content is generally considered safe and appropriate.

### Can Solo Harmony be used for karaoke practice?

Yes, Solo Harmony is useful for practicing karaoke harmony. You can play the original vocals quietly and the harmony parts loudly to help you learn your part.

## Version history (last 4 releases)

### 1.0.3 — 2025-11-29

Fixed a bug in importing via file sharing.

### 1.0.2 — 2024-03-25

・Added privacy manifests.
・Added app version number to help.

### 1.0.1 — 2023-09-29

Fixed an issue where files could not be imported via file sharing on iOS17.

### 1.0.0 — 2023-03-11

No release notes.

## More apps by Masanori Katsuta

- [See-Through Camera](https://appshunter.io/ios/app/see-through-camera/id545626309)
- [NightScope+](https://appshunter.io/ios/app/nightscope-plus/id571926077)
- [Beautiful Legs Camera HD](https://appshunter.io/ios/app/beautiful-legs-camera-hd/id591781406)
- [Bon-Q-Bon Camera](https://appshunter.io/ios/app/bon-q-bon-camera/id733497157)
- [PlaceNotes+](https://appshunter.io/ios/app/placenotes-plus/id901148164)
- [Ripple Camera](https://appshunter.io/ios/app/ripple-camera/id939375856)

All apps by Masanori Katsuta: https://appshunter.io/developer/320172788

## Related topics

[harmony voice](https://appshunter.io/ios/topics/harmony-voice) · [harmony helper](https://appshunter.io/ios/topics/harmony-helper)

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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 2026-08-29.*