# OnKey Lite vs Scale Study

The clearest difference is rating: Scale Study at 5.0 against OnKey Lite's 4.5. Scale Study also leads on update cadence (every 2 weeks vs every 3 months). OnKey Lite's advantage is in-app purchases (none vs 2) and iOS requirement (14.0 vs 16.6). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Scale Study sells 2 in-app purchases, starting at $0.99 per year. OnKey Lite asks for nothing beyond the download.

Scale Study holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

OnKey Lite ships an update every 3 months, Scale Study every 2 weeks. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | OnKey Lite | Scale Study |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (2 ratings)](https://appshunter.io/ios/app/onkey-lite-scale-practice/id1638630839/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/scale-study-tempo-practice/id6758663846/reviews)** |
| Number of ratings | **2** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 1 MB | 20 MB |
| Requires iOS | **14.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Rea Meir](https://appshunter.io/developer/1638204694) | [Diem Limited](https://appshunter.io/developer/1439019995) |

## What reviewers say

### OnKey Lite

[App page](https://appshunter.io/ios/app/onkey-lite-scale-practice/id1638630839)

This app generates readable, note-based exercises for practicing musical scales and chords. It's ideal for warm-ups, technique drills, or theory work, catering to musicians of all levels. Customize your practice with various patterns, keys, and note name options.

**Highlights:** Generate note-based exercises, Practice scales and chords, Transpose to any key, Set range and clef, Choose from various patterns, Add note names and time signatures

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

**In-app purchases:** none


### Scale Study

[App page](https://appshunter.io/ios/app/scale-study-tempo-practice/id6758663846)

Improve your piano scale technique by practicing tempo and accuracy. Connect a MIDI keyboard to log your fastest clean tempos and track progress over time. A tapping mode is available for rhythm practice without a keyboard.

**Highlights:** Practice scales with MIDI keyboard, Log fastest accurate tempos, Track progress over time, Focus on speed and accuracy, Rhythm and timing tapping mode

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Scale Study Annual Subscription | $0.99 | per year |
| Scale Study Lifetime Purchase | $2.99 | one-time |


## Frequently asked questions

### Is OnKey Lite free?

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

### Is Scale Study free?

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

### Which has better reviews, OnKey Lite or Scale Study?

Scale Study is rated higher. OnKey Lite averages 4.5 out of 5 from 2 ratings, while Scale Study averages 5.0 from 1 ratings.

### Do OnKey Lite or Scale Study have ads?

Neither OnKey Lite nor Scale Study shows ads.

### Which is updated more often, OnKey Lite or Scale Study?

OnKey Lite ships an update every 3 months, and Scale Study every 2 weeks. Most recently, OnKey Lite was updated on November 3, 2026 and Scale Study 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.*