# Clustering vs Chorus Lesson

The clearest difference is in-app purchases: Clustering at none against Chorus Lesson's 10. Clustering also leads on device support (3 vs 1) and iOS requirement (15.6 vs 26.0). Chorus Lesson's advantage is update cadence (every 2 weeks vs every 5 months) and price ($2.99 vs $5.99). On review sentiment and ads there is nothing between them.

Clustering costs $5.99 and Chorus Lesson $2.99 up front. Chorus Lesson sells 10 one-off in-app purchases. Clustering asks for nothing beyond the download.

Clustering ships an update every 5 months, Chorus Lesson every 2 weeks. The most recent releases landed on June 1, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Clustering | Chorus Lesson |
| --- | --- | --- |
| Price | $5.99 | **$2.99** |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 60 MB | 228 MB |
| Requires iOS | **15.6** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [tingjing.com](https://appshunter.io/developer/442007900) | [NOKKEUSI Inc.](https://appshunter.io/developer/482532151) |

## What reviewers say

### Clustering

[App page](https://appshunter.io/ios/app/clustering/id1469460016)

This music practice tool allows improvisers to set up chordal structures and use them as practice material. Explore root movements through various cycles to discover new musical ideas and enhance your practice routine.

**Highlights:** Set up chordal structures, Use clusters for practice, Explore root movements, Practice through cycles (fourths, chromatic), Enhance musical practice

**Features:** macOS Compatibility

**In-app purchases:** none


### Chorus Lesson

[App page](https://appshunter.io/ios/app/chorus-lesson/id1515226301)

This app functions as a MIDI player designed for personal choral practice. It allows users to isolate individual parts, adjust volume and panning, and change playback speed for tailored practice sessions. Standard MIDI files can be played, with additional song data available for purchase.

**Highlights:** MIDI player for choral practice, Mute, solo, volume, panning per part, Adjustable playback speed, Play standard MIDI files, Purchase song data in-app

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 30-days Trial for free | Free | one-time |
| BWV227 All through | Free | one-time |
| BWV226-1 Bars 1-145 | Free | one-time |
| Trial for 14 days | Free | one-time |
| BWV226-2 Bars146-244 | $0.99 | one-time |
| BWV226-3 Bars245-268 | $0.99 | one-time |
| BWV226 Complete set | $0.99 | one-time |
| BWV225 Complete set | $0.99 | one-time |
| BWV228; Fürchte dich nicht,... | $0.99 | one-time |
| BWV229; Komm, Jesu, komm | $0.99 | one-time |


## Frequently asked questions

### Is Clustering free?

Clustering costs $5.99, with no in-app purchases.

### Is Chorus Lesson free?

Chorus Lesson costs $2.99, and also offers in-app purchases.

### Do Clustering or Chorus Lesson have ads?

Neither Clustering nor Chorus Lesson shows ads.

### Which is updated more often, Clustering or Chorus Lesson?

Clustering ships an update every 5 months, and Chorus Lesson every 2 weeks. Most recently, Clustering was updated on June 1, 2026 and Chorus Lesson on October 16, 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.*