# majors23 vs Unfog

The clearest difference is in-app purchases: majors23 at none against Unfog's 3. Unfog's advantage is update cadence (every 2 days vs every 5 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Unfog sells 3 in-app purchases, starting at $2.99 per 7 days. majors23 asks for nothing beyond the download.

majors23 ships an update every 5 days, Unfog every 2 days. The most recent releases landed on October 8, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | majors23 | Unfog |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 2 days** |
| Size | 139 MB | 80 MB |
| Requires iOS | 17 | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [JAE HO YOON](https://appshunter.io/developer/1886674566) | [BITSEC SP. Z O.O.](https://appshunter.io/developer/1801990616) |

## What reviewers say

### majors23

[App page](https://appshunter.io/ios/app/majors23/id6760968725)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 majors23 free?

majors23 is free to download, with no in-app purchases.

### Is Unfog free?

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

### Do majors23 or Unfog have ads?

Neither majors23 nor Unfog shows ads.

### Which is updated more often, majors23 or Unfog?

majors23 ships an update every 5 days, and Unfog every 2 days. Most recently, majors23 was updated on October 8, 2026 and Unfog on October 17, 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.*