# Keys Trainer vs NoteTrace

The clearest difference is price: NoteTrace at Free against Keys Trainer's $2.99. NoteTrace also leads on update cadence (every 10 days vs every 9 months). Keys Trainer's advantage is ads (none vs shown) and iOS requirement (12.0 vs 17.6). On in-app purchases and device support there is nothing between them.

NoteTrace is free to download; Keys Trainer costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Keys Trainer ships an update every 9 months, NoteTrace every 10 days. The most recent releases landed on October 22, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Keys Trainer | NoteTrace |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/keys-trainer/id1525979034/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 9 months | **Every 10 days** |
| Monetization | Paid | — |
| Size | 30 MB | 6 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Plearn LLC](https://appshunter.io/developer/6792172523) | [SHIGETAKA NISHIDA](https://appshunter.io/developer/1766669218) |

## What reviewers say

### Keys Trainer

[App page](https://appshunter.io/ios/app/keys-trainer/id1525979034)

Master key signatures and scales with this music learning app. Practice identifying keys, understanding note sharps/flats, and instantly recognizing scale layouts on a keyboard. Features include customizable practice, passive viewing, and a challenging game mode.

**Highlights:** Key signature recognition, Scale layout identification, Customizable learning range, Intelligent training based on performance, Practice, View, Game, and Search modes, Earn coins, medals, and trophies

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

**In-app purchases:** none


### NoteTrace

[App page](https://appshunter.io/ios/app/notetrace-note-reading-coach/id6801029479)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Keys Trainer free?

Keys Trainer costs $2.99, with no in-app purchases.

### Is NoteTrace free?

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

### Do Keys Trainer or NoteTrace have ads?

NoteTrace shows ads; Keys Trainer does not.

### Which is updated more often, Keys Trainer or NoteTrace?

Keys Trainer ships an update every 9 months, and NoteTrace every 10 days. Most recently, Keys Trainer was updated on October 22, 2026 and NoteTrace on October 29, 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.*