# Probability Toolkit vs e++ Probability

The clearest difference is price: e++ Probability at Free against Probability Toolkit's $1.99. On ads, in-app purchases, device support and iOS requirement there is nothing between them.

e++ Probability is free to download; Probability Toolkit costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Probability Toolkit | e++ Probability |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | — |
| Size | 41 MB | 30 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPad | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ventura Educational Systems](https://appshunter.io/developer/371324172) | [Modern Educational Research Society, LTD](https://appshunter.io/developer/432268704) |

## What reviewers say

### Probability Toolkit

[App page](https://appshunter.io/ios/app/probability-toolkit/id652216774)

**Features:** macOS Compatibility

**In-app purchases:** none


### e++ Probability

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Probability Toolkit free?

Probability Toolkit costs $1.99, with no in-app purchases.

### Is e++ Probability free?

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

### Do Probability Toolkit or e++ Probability have ads?

Neither Probability Toolkit nor e++ Probability 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.*