# OnKey vs Multi

The clearest difference is price: OnKey at $4.99 against Multi's $9.99. OnKey also leads on iOS requirement (14.1 vs 18.1). On update cadence, ads, in-app purchases and device support there is nothing between them.

OnKey costs $4.99 and Multi $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | OnKey | Multi |
| --- | --- | --- |
| Price | **$4.99** | $9.99 |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/onkey-scale-practice/id1638204692/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Paid | — |
| Size | 2 MB | 4 MB |
| Requires iOS | **14.1** | 18.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Rea Meir](https://appshunter.io/developer/1638204694) | [Engineered Stuff](https://appshunter.io/developer/383720996) |

## What reviewers say

### OnKey

[App page](https://appshunter.io/ios/app/onkey-scale-practice/id1638204692)

This app generates readable, note-based exercises for practicing scales and chords. It's ideal for musicians of all levels looking for a focused and efficient way to improve their technique and theory knowledge without manual preparation.

**Highlights:** Generate note-based exercises, Select scale or chord type, 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


### Multi

[App page](https://appshunter.io/ios/app/multi-tracker/id6743124970)

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

**In-app purchases:** none


## Frequently asked questions

### Is OnKey free?

OnKey costs $4.99, with no in-app purchases.

### Is Multi free?

Multi costs $9.99, with no in-app purchases.

### Do OnKey or Multi have ads?

Neither OnKey nor Multi shows ads.

### Which is updated more often, OnKey or Multi?

OnKey ships an update every 2 months, and Multi every 2 months. Most recently, OnKey was updated on November 3, 2026 and Multi on November 4, 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.*