# Chet vs metromills

The clearest difference is in-app purchases: Chet at none against metromills's 3. metromills's advantage is update cadence (every 2 weeks vs every 5 weeks) and iOS requirement (16.2 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. metromills sells 3 one-off in-app purchases. Chet asks for nothing beyond the download.

Chet ships an update every 5 weeks, metromills every 2 weeks. The most recent releases landed on November 10, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Chet | metromills |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (2.4K ratings)](https://appshunter.io/ios/app/chet-ear-training/id1405525467/reviews)** | — |
| Number of ratings | **2.4K** | — |
| Positive reviews | 96.1% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 116 MB | 24 MB |
| Requires iOS | 18.0 | **16.2** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [Ensemble Education](https://appshunter.io/developer/1746859300) | [Pascal Versini](https://appshunter.io/developer/1862209426) |

## What reviewers say

### Chet

[App page](https://appshunter.io/ios/app/chet-ear-training/id1405525467)

Develop your musical ear and understanding of music theory with interactive exercises and games. Learn at your own pace, practice with virtual instruments, and track your progress. Compete globally and become a more versatile musician.

**Highlights:** Identify music theory concepts, Call and response exercises, MIDI keyboard compatibility, Guided learning paths, Extensive exercise library, Competitive global leaderboards, Spaced repetition practice mode

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Great app
- 👍 Helpful and fun
- 🚀 Excellent ear training tool
- 👍 Intuitive and well-designed
- 🚀 Comprehensive and effective

**What reviewers complain about**

- 🐛 Occasional bugs and glitches
- 🔋 Compatibility issues with older devices
- 🐛 Inaccurate labeling of intervals
- 🔋 Timed exercises not suitable for all

**Reported bugs**

- App not loading or freezing
- Incorrect labeling of intervals
- Timed exercises not functioning properly

**Requested features**

- Add Chinese language support
- Incorporate guitar-specific exercises
- Introduce a hands-free mode
- Reinstate the previous practice mode
- Expand the range of musical genres and styles


### metromills

[App page](https://appshunter.io/ios/app/metromills/id6756673510)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| virtual coffe | $1.99 | one-time |
| Virtual Pizza | $4.99 | one-time |
| Virtual keyboard | $9.99 | one-time |


## Frequently asked questions

### Is Chet free?

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

### Is metromills free?

metromills is free to download, with in-app purchases available.

### Do Chet or metromills have ads?

Neither Chet nor metromills shows ads.

### Which is updated more often, Chet or metromills?

Chet ships an update every 5 weeks, and metromills every 2 weeks. Most recently, Chet was updated on November 10, 2026 and metromills on November 9, 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.*