# Combinatorics PRO vs EN

The clearest difference is price: EN at Free against Combinatorics PRO's $1.99. EN also leads on iOS requirement (13 vs 15.0). Combinatorics PRO's advantage is ads (none vs shown). On in-app purchases and device support there is nothing between them.

EN is free to download; Combinatorics PRO costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Combinatorics PRO | EN |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Monthly | — |
| Size | 179 MB | 105 MB |
| Requires iOS | 15.0 | **13** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Glindemann, Sennoun, Langer GbR](https://appshunter.io/developer/1024972809) | [THAI FAST COMPANY LIMITED](https://appshunter.io/developer/1225512562) |

## What reviewers say

### Combinatorics PRO

[App page](https://appshunter.io/ios/app/combinatorics-pro/id6472449368)

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

**In-app purchases:** none


### EN

[App page](https://appshunter.io/ios/app/en-chinese-simplified/id6499305095)

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

**In-app purchases:** none


## Frequently asked questions

### Is Combinatorics PRO free?

Combinatorics PRO costs $1.99, with no in-app purchases.

### Is EN free?

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

### Do Combinatorics PRO or EN have ads?

EN shows ads; Combinatorics PRO does not.

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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.*