# MuseSync vs Quick Theory

The clearest difference is update cadence: MuseSync at weekly against Quick Theory's every 3 weeks. MuseSync also leads on iOS requirement (15.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. MuseSync sells 5 in-app purchases, starting at $7.99 per month and Quick Theory sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

MuseSync ships an update weekly, Quick Theory every 3 weeks. The most recent releases landed on September 28, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | MuseSync | Quick Theory |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 weeks |
| Size | 160 MB | 87 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Toolbone LLP](https://appshunter.io/developer/1659998263) | [HANOCH YOSEF LIB](https://appshunter.io/developer/6788600007) |

## What reviewers say

### MuseSync

[App page](https://appshunter.io/ios/app/musesync/id6447834515)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Playlister | $7.99 | per month |
| Maestro | $17.99 | per 3 months |
| Virtuoso | $32.99 | per 6 months |
| Super Star | $45.99 | per year |
| Lifetime Access | $99.99 | one-time |


### Quick Theory

[App page](https://appshunter.io/ios/app/quick-theory/id6790213145)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $4.99 | per month |
| Yearly | $29.99 | per year |
| Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is MuseSync free?

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

### Is Quick Theory free?

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

### Do MuseSync or Quick Theory have ads?

Neither MuseSync nor Quick Theory shows ads.

### Which is updated more often, MuseSync or Quick Theory?

MuseSync ships an update weekly, and Quick Theory every 3 weeks. Most recently, MuseSync was updated on September 28, 2026 and Quick Theory on September 15, 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.*