# MIDITrainer vs Wren

The clearest difference is in-app purchases: MIDITrainer at none against Wren's 4. Wren's advantage is update cadence (fortnightly vs every 9 months) and iOS requirement (16.4 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. Wren sells 4 in-app purchases, starting at $4.99 per month. MIDITrainer asks for nothing beyond the download.

MIDITrainer ships an update every 9 months, Wren fortnightly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | MIDITrainer | Wren |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.7 (3 ratings)](https://appshunter.io/ios/app/wren-chord-trainer/id6785279399/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Fortnightly** |
| Monetization | — | Free with in-app purchases |
| Size | 10 MB | 54 MB |
| Requires iOS | 18.0 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [RIKER TECH, LLC](https://appshunter.io/developer/381126312) | [Sammy Eang](https://appshunter.io/developer/6785279401) |

## What reviewers say

### MIDITrainer

[App page](https://appshunter.io/ios/app/miditrainer/id6756984380)

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

**In-app purchases:** none


### Wren

[App page](https://appshunter.io/ios/app/wren-chord-trainer/id6785279399)

Master music theory by learning chords and scales. Practice progressions, improve speed and accuracy with a MIDI keyboard, and track your progress. Become a proficient musician capable of playing your own songs.

**Highlights:** Progressive training plan based on Circle of Fifths, Guided chord progressions with transposition, Scale practice with proper fingerings, MIDI keyboard integration for real-time scoring, Progress tracking and proficiency reports, Guitar chord shapes and piano chord reference

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $4.99 | per month |
| 6 Months | $24.99 | per 6 months |
| Annual | $39.99 | per year |
| Lifetime | $99.99 | one-time |


## Frequently asked questions

### Is MIDITrainer free?

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

### Is Wren free?

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

### Do MIDITrainer or Wren have ads?

Neither MIDITrainer nor Wren shows ads.

### Which is updated more often, MIDITrainer or Wren?

MIDITrainer ships an update every 9 months, and Wren fortnightly. Most recently, MIDITrainer was updated on October 30, 2026 and Wren on October 31, 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.*