# Q vs Fourier App

The clearest difference is in-app purchases: Fourier App at none against Q's 3. Fourier App also leads on iOS requirement (13.0 vs 26.0). Q's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 3 months). On price and device support there is nothing between them.

Both are free to download. Q sells 3 in-app purchases, starting at $4.99 per month. Fourier App asks for nothing beyond the download.

Q ships an update every 3 weeks, Fourier App every 3 months. The most recent releases landed on October 28, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Q | Fourier App |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Size | 8 MB | 30 MB |
| Requires iOS | 26.0 | **13.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [EUNMIN PARK](https://appshunter.io/developer/1549813078) | [Sthefano Schiavon](https://appshunter.io/developer/1882733645) |

## What reviewers say

### Q

[App page](https://appshunter.io/ios/app/q-alpha/id6760243993)

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Q-Alpha Pro (Monthly) | $4.99 | per month |
| Q-Alpha Pro (Yearly) | $29.99 | per year |
| Q-Alpha Learner Lifetime | $49.99 | one-time |


### Fourier App

[App page](https://appshunter.io/ios/app/fourier-app/id6760314201)

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

**In-app purchases:** none


## Frequently asked questions

### Is Q free?

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

### Is Fourier App free?

Fourier App is free to download, with no in-app purchases.

### Do Q or Fourier App have ads?

Fourier App shows ads; Q does not.

### Which is updated more often, Q or Fourier App?

Q ships an update every 3 weeks, and Fourier App every 3 months. Most recently, Q was updated on October 28, 2026 and Fourier App on October 7, 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.*