# Chord Sense Trainer vs NoteRunner

The clearest difference is in-app purchases: NoteRunner at none against Chord Sense Trainer's 5. NoteRunner also leads on iOS requirement (18.0 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Chord Sense Trainer sells 5 in-app purchases, starting at $0.49 per month. NoteRunner asks for nothing beyond the download.

Both ship on a similar rhythm, roughly fortnightly. Both last shipped on October 24, 2026.

## The numbers

| Metric | Chord Sense Trainer | NoteRunner |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Fortnightly | Fortnightly |
| Monetization | Freemium | — |
| Size | 30 MB | 6 MB |
| Requires iOS | 26.0 | **18.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ruku Kobayashi](https://appshunter.io/developer/1707735136) | [MIZOU, CO., LTD.](https://appshunter.io/developer/1542553141) |

## What reviewers say

### Chord Sense Trainer

[App page](https://appshunter.io/ios/app/chord-sense-trainer/id6466735897)

This app helps musicians and aspiring musicians develop their ability to identify chords by ear. It offers quiz-style training that progresses in difficulty, with a custom mode for personalized practice. Train your ear for music transcription and composition anytime, anywhere.

**Highlights:** Quiz-style chord recognition, Progressive difficulty levels, Custom training mode, Theme and dark mode customization, Mobile practice for musicians

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Plan (Monthly) | $0.49 | per month |
| Gift sweets | $0.49 | one-time |
| Premium Plan (Lifetime) | $1.99 | one-time |
| Gift coffee | $2.99 | one-time |
| Gift for dinner | $5.99 | one-time |


### NoteRunner

[App page](https://appshunter.io/ios/app/noterunner-note-game/id6760548010)

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

**In-app purchases:** none


## Frequently asked questions

### Is Chord Sense Trainer free?

Chord Sense Trainer is free to download, with in-app purchases available.

### Is NoteRunner free?

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

### Do Chord Sense Trainer or NoteRunner have ads?

Both Chord Sense Trainer and NoteRunner show ads.

### Which is updated more often, Chord Sense Trainer or NoteRunner?

Chord Sense Trainer ships an update fortnightly, and NoteRunner fortnightly. Most recently, Chord Sense Trainer was updated on October 24, 2026 and NoteRunner on October 24, 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.*