# Feynman WTF vs Lie group

The clearest difference is in-app purchases: Lie group at none against Feynman WTF's 2. Feynman WTF's advantage is device support. On price and iOS requirement there is nothing between them.

Both are free to download. Feynman WTF sells 2 in-app purchases, starting at $10.00 per month. Lie group asks for nothing beyond the download.

## The numbers

| Metric | Feynman WTF | Lie group |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | — |
| Update frequency | Weekly | — |
| Size | 37 MB | 6 MB |
| Requires iOS | **15.1** | 16.6 |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [Vrushal Kapadnis](https://appshunter.io/developer/1830846117) | [Sungjun Kim](https://appshunter.io/developer/1602461985) |

## What reviewers say

### Feynman WTF

[App page](https://appshunter.io/ios/app/feynman-wtf/id6749510148)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $10.00 | per month |
| Pro Yearly | $99.99 | per year |


### Lie group

[App page](https://appshunter.io/ios/app/lie-group/id6759241380)

**In-app purchases:** none


## Frequently asked questions

### Is Feynman WTF free?

Feynman WTF is free to download, with in-app purchases available.

### Is Lie group free?

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

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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.*