# Feynman diagram vs MindLine

The clearest difference is in-app purchases: Feynman diagram at none against MindLine's 1. Feynman diagram also leads on ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. MindLine sells 1 one-off in-app purchase. Feynman diagram asks for nothing beyond the download.

## The numbers

| Metric | Feynman diagram | MindLine |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 4 days |
| Size | 3 MB | 37 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sungjun Kim](https://appshunter.io/developer/1602461985) | [MEHMET SIRIN CAN](https://appshunter.io/developer/1567376603) |

## What reviewers say

### Feynman diagram

[App page](https://appshunter.io/ios/app/feynman-diagram/id6475814531)

**Features:** macOS Compatibility

**In-app purchases:** none


### MindLine

[App page](https://appshunter.io/ios/app/mindline/id6756551219)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro User | $1.99 | one-time |


## Frequently asked questions

### Is Feynman diagram free?

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

### Is MindLine free?

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

### Do Feynman diagram or MindLine have ads?

MindLine shows ads; Feynman diagram 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.*