# MUST PROFESSOR vs ERDEME

The clearest difference is update cadence: MUST PROFESSOR at monthly against ERDEME's every 13 months. ERDEME's advantage is iOS requirement (12.0 vs 15.6). On price, ads, 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.

MUST PROFESSOR ships an update monthly, ERDEME every 13 months. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | MUST PROFESSOR | ERDEME |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 13 months |
| Size | 24 MB | 38 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [batjargal chuluunkhuu](https://appshunter.io/developer/1538719237) | [Suriy Edtech LLC](https://appshunter.io/developer/1713292380) |

## What reviewers say

### MUST PROFESSOR

[App page](https://appshunter.io/ios/app/must-professor/id1556175407)

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

**In-app purchases:** none


### ERDEME

[App page](https://appshunter.io/ios/app/erdeme/id6470260382)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MUST PROFESSOR free?

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

### Is ERDEME free?

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

### Do MUST PROFESSOR or ERDEME have ads?

Neither MUST PROFESSOR nor ERDEME shows ads.

### Which is updated more often, MUST PROFESSOR or ERDEME?

MUST PROFESSOR ships an update monthly, and ERDEME every 13 months. Most recently, MUST PROFESSOR was updated on November 3, 2026 and ERDEME on November 7, 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.*