# FlashGenius vs Unfog

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

Both are free to download. FlashGenius sells 1 in-app purchase, starting at $2.99 per month and Unfog sells 3 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

FlashGenius ships an update monthly, Unfog every 2 days. The most recent releases landed on October 13, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | FlashGenius | Unfog |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 2 days** |
| Size | 31 MB | 80 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Tabish Hassan](https://appshunter.io/developer/1885918100) | [BITSEC SP. Z O.O.](https://appshunter.io/developer/1801990616) |

## What reviewers say

### FlashGenius

[App page](https://appshunter.io/ios/app/flashgenius-smart-flashcards/id6762045443)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FlashGenius Premium | $2.99 | per month |


### 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 |


## Frequently asked questions

### Is FlashGenius free?

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

### Is Unfog free?

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

### Do FlashGenius or Unfog have ads?

FlashGenius shows ads; Unfog does not.

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

FlashGenius ships an update monthly, and Unfog every 2 days. Most recently, FlashGenius was updated on October 13, 2026 and Unfog on October 1, 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.*