# MUST PROFESSOR vs Voca Mongolia

The clearest difference is in-app purchases: MUST PROFESSOR at none against Voca Mongolia's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Voca Mongolia sells 2 in-app purchases, starting at $5.99 per month. MUST PROFESSOR asks for nothing beyond the download.

MUST PROFESSOR ships an update monthly, Voca Mongolia every 3 weeks. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | MUST PROFESSOR | Voca Mongolia |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Size | 24 MB | 46 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [batjargal chuluunkhuu](https://appshunter.io/developer/1538719237) | [Temuujin Batjargal](https://appshunter.io/developer/6789113722) |

## 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


### Voca Mongolia

[App page](https://appshunter.io/ios/app/voca-mongolia/id6789113720)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Standard | $5.99 | per month |
| Premium | $8.99 | per month |


## Frequently asked questions

### Is MUST PROFESSOR free?

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

### Is Voca Mongolia free?

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

### Do MUST PROFESSOR or Voca Mongolia have ads?

Neither MUST PROFESSOR nor Voca Mongolia shows ads.

### Which is updated more often, MUST PROFESSOR or Voca Mongolia?

MUST PROFESSOR ships an update monthly, and Voca Mongolia every 3 weeks. Most recently, MUST PROFESSOR was updated on November 3, 2026 and Voca Mongolia on November 5, 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.*