# e++ Probability vs SkoolSy Teacher

The clearest difference is device support: SkoolSy Teacher at 3 against e++ Probability's 1. e++ Probability's advantage is iOS requirement (12.0 vs 15.1). On price, ads and in-app purchases there is nothing between them.

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

## The numbers

| Metric | e++ Probability | SkoolSy Teacher |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 2 weeks |
| Size | 30 MB | 29 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [Modern Educational Research Society, LTD](https://appshunter.io/developer/432268704) | [School Shaik Private Limited](https://appshunter.io/developer/1829618055) |

## What reviewers say

### e++ Probability

[App page](https://appshunter.io/ios/app/e-plus-plus-probability/id1564855389)

**Features:** macOS Compatibility

**In-app purchases:** none


### SkoolSy Teacher

[App page](https://appshunter.io/ios/app/skoolsy-teacher/id6749736240)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is e++ Probability free?

e++ Probability is free to download, with no in-app purchases.

### Is SkoolSy Teacher free?

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

### Do e++ Probability or SkoolSy Teacher have ads?

Neither e++ Probability nor SkoolSy Teacher shows ads.

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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.*