# Scaler 3 vs TuneLock

The clearest difference is price: TuneLock at Free against Scaler 3's $12.99. TuneLock also leads on update cadence (every 6 days vs fortnightly). Scaler 3's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement there is nothing between them.

TuneLock is free to download; Scaler 3 costs $12.99 up front. TuneLock sells 1 one-off in-app purchase. Scaler 3 asks for nothing beyond the download.

Scaler 3 ships an update fortnightly, TuneLock every 6 days. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Scaler 3 | TuneLock |
| --- | --- | --- |
| Price | $12.99 | **Free** |
| Rating | **[4.7 (171 ratings)](https://appshunter.io/ios/app/scaler-3/id6749147552/reviews)** | — |
| Number of ratings | **171** | — |
| Positive reviews | 56.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 6 days** |
| Monetization | Paid | — |
| Size | 1.1 GB | 2 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Scaler Music](https://appshunter.io/developer/1603180477) | [Matthew Edwards](https://appshunter.io/developer/6781458390) |

## What reviewers say

### Scaler 3

[App page](https://appshunter.io/ios/app/scaler-3/id6749147552)

This music theory workstation helps you discover chords, explore harmony, and build complete musical ideas. It offers a redesigned workflow, expanded creative potential, and powerful new capabilities for songwriting and music production.

**Highlights:** Discover music's key with MIDI and audio detection, Access over 1,000 chord sets, keys, and modes, Build intelligent chord progressions with automatic voice-leading, Structure full musical ideas with Scenes and Arrange Page, Transform chords into melodies, basslines, and phrases, Explore harmony with Circle of Fifths and modulation tools, Host AUv3 plugins and interoperate with desktop versions

**Features:** Vision Pro support

**In-app purchases:** none


### TuneLock

[App page](https://appshunter.io/ios/app/tunelock-practice-streak/id6784225280)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TuneLock Unlock | $5.99 | one-time |


## Frequently asked questions

### Is Scaler 3 free?

Scaler 3 costs $12.99, with no in-app purchases.

### Is TuneLock free?

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

### Do Scaler 3 or TuneLock have ads?

Neither Scaler 3 nor TuneLock shows ads.

### Which is updated more often, Scaler 3 or TuneLock?

Scaler 3 ships an update fortnightly, and TuneLock every 6 days. Most recently, Scaler 3 was updated on November 5, 2026 and TuneLock 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.*