# Know It vs majors23

The clearest difference is in-app purchases: majors23 at none against Know It's 2. majors23 also leads on update cadence (every 5 days vs every 2 months). Know It's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 17). On price and ads there is nothing between them.

Both are free to download. Know It sells 2 in-app purchases, starting at $3.99 per month. majors23 asks for nothing beyond the download.

Know It ships an update every 2 months, majors23 every 5 days. The most recent releases landed on October 15, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Know It | majors23 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 days** |
| Size | 50 MB | 139 MB |
| Requires iOS | **15.1** | 17 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [NOLAN OLIVIER DANIEL ESSERTAIZE](https://appshunter.io/developer/1876489727) | [JAE HO YOON](https://appshunter.io/developer/1886674566) |

## What reviewers say

### Know It

[App page](https://appshunter.io/ios/app/know-it-feynman/id6759038082)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Abonnement étudiant | $3.99 | per month |
| Abonnement Illimité | $12.99 | per month |


### majors23

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Know It free?

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

### Is majors23 free?

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

### Do Know It or majors23 have ads?

Neither Know It nor majors23 shows ads.

### Which is updated more often, Know It or majors23?

Know It ships an update every 2 months, and majors23 every 5 days. Most recently, Know It was updated on October 15, 2026 and majors23 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.*