# Prof vs B

The clearest difference is ads: Prof at none against B's shown. Prof also leads on update cadence (every 3 weeks vs every 4 months). B's advantage is iOS requirement (15.0 vs 18.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Prof ships an update every 3 weeks, B every 4 months. The most recent releases landed on September 29, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Prof | B |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Size | 832 MB | 68 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Benjamin TATI](https://appshunter.io/developer/1583386758) | [Alp Mountain](https://appshunter.io/developer/1630775518) |

## What reviewers say

### Prof

[App page](https://appshunter.io/ios/app/prof-elem/id6448314455)

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

**In-app purchases:** none


### B

[App page](https://appshunter.io/ios/app/b-ischool/id6738282264)

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

**In-app purchases:** none


## Frequently asked questions

### Is Prof free?

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

### Is B free?

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

### Do Prof or B have ads?

B shows ads; Prof does not.

### Which is updated more often, Prof or B?

Prof ships an update every 3 weeks, and B every 4 months. Most recently, Prof was updated on September 29, 2026 and B on September 30, 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.*