# Scale Navi vs simple loop machine

The clearest difference is in-app purchases: simple loop machine at none against Scale Navi's 1. simple loop machine also leads on update cadence (every 4 days vs every 3 weeks). Scale Navi's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Scale Navi sells 1 one-off in-app purchase. simple loop machine asks for nothing beyond the download.

Scale Navi ships an update every 3 weeks, simple loop machine every 4 days. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Scale Navi | simple loop machine |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/scale-navi-piano-scales/id6755628178/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 4 MB | 5 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ITO SOFT DESIGN Inc.](https://appshunter.io/developer/311313017) | [GoateeAllstars](https://appshunter.io/developer/1817807346) |

## What reviewers say

### Scale Navi

[App page](https://appshunter.io/ios/app/scale-navi-piano-scales/id6755628178)

Visualize piano scale fingerings directly on the keyboard. Master Hanon Exercise 39 with visual aids, synchronized metronome, and progress tracking. Practice all 24 keys efficiently with guided navigation and adjustable tempo.

**Highlights:** Visual fingering display on keyboard, Support for all 24 keys, Three minor scale types, Synchronized metronome with playback, Progress tracking per key, Background playback

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Version | $3.99 | one-time |


### simple loop machine

[App page](https://appshunter.io/ios/app/simple-loop-machine/id6771816478)

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

**In-app purchases:** none


## Frequently asked questions

### Is Scale Navi free?

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

### Is simple loop machine free?

simple loop machine is free to download, with no in-app purchases.

### Do Scale Navi or simple loop machine have ads?

simple loop machine shows ads; Scale Navi does not.

### Which is updated more often, Scale Navi or simple loop machine?

Scale Navi ships an update every 3 weeks, and simple loop machine every 4 days. Most recently, Scale Navi was updated on October 28, 2026 and simple loop machine on October 25, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*