# Biggest Brain App vs Tether

The clearest difference is in-app purchases: Tether at none against Biggest Brain App's 1. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Biggest Brain App sells 1 one-off in-app purchase. Tether asks for nothing beyond the download.

## The numbers

| Metric | Biggest Brain App | Tether |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Size | 64 MB | 82 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Marko Reljic](https://appshunter.io/developer/1767941603) | [Atul Tripathi](https://appshunter.io/developer/6799184157) |

## What reviewers say

### Biggest Brain App

[App page](https://appshunter.io/ios/app/biggest-brain-app/id6761560078)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $4.99 | one-time |


### Tether

[App page](https://appshunter.io/ios/app/tether-gravity-puzzle/id6807263133)

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

**In-app purchases:** none


## Frequently asked questions

### Is Biggest Brain App free?

Biggest Brain App is free to download, with in-app purchases available.

### Is Tether free?

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

### Do Biggest Brain App or Tether have ads?

Both Biggest Brain App and Tether show 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.*