# Unfog vs QuizMind

The clearest difference is in-app purchases: QuizMind at none against Unfog's 3. QuizMind also leads on iOS requirement (15.1 vs 17.0). Unfog's advantage is ads (none vs shown) and update cadence (every 2 days vs every 2 weeks). On price and device support there is nothing between them.

Both are free to download. Unfog sells 3 in-app purchases, starting at $2.99 per 7 days. QuizMind asks for nothing beyond the download.

Unfog ships an update every 2 days, QuizMind every 2 weeks. Both last shipped on October 25, 2026.

## The numbers

| Metric | Unfog | QuizMind |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 2 days** | Every 2 weeks |
| Size | 80 MB | 41 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [BITSEC SP. Z O.O.](https://appshunter.io/developer/1801990616) | [Ozkan Yilmaz](https://appshunter.io/developer/1708878442) |

## What reviewers say

### Unfog

[App page](https://appshunter.io/ios/app/unfog-feynman-study-notes/id6776245365)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unfog weekly | $2.99 | per 7 days |
| Unfog Monthly | $17.99 | per month |
| Unfog Annual | $29.99 | per year |


### QuizMind

[App page](https://appshunter.io/ios/app/quizmind-pdf-quiz-maker/id6799021682)

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

**In-app purchases:** none


## Frequently asked questions

### Is Unfog free?

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

### Is QuizMind free?

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

### Do Unfog or QuizMind have ads?

QuizMind shows ads; Unfog does not.

### Which is updated more often, Unfog or QuizMind?

Unfog ships an update every 2 days, and QuizMind every 2 weeks. Most recently, Unfog was updated on October 25, 2026 and QuizMind on October 25, 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.*