# Echo vs Gravity Orbit Lab

The clearest difference is device support: Gravity Orbit Lab at 2 against Echo's —. Gravity Orbit Lab also leads on iOS requirement (15 vs 17.0). On price 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 | Echo | Gravity Orbit Lab |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | — | No |
| Size | 1 MB | 7 MB |
| Requires iOS | 17.0 | **15** |
| Devices | — | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [BERKE ERKESIM](https://appshunter.io/developer/1878370920) | [珺瑞 王](https://appshunter.io/developer/1861829279) |

## What reviewers say

### Echo

[App page](https://appshunter.io/ios/app/echo-grid-puzzle/id6759986579)

**In-app purchases:** none


### Gravity Orbit Lab

[App page](https://appshunter.io/ios/app/gravity-orbit-lab/id6760806733)

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

**In-app purchases:** none


## Frequently asked questions

### Is Echo free?

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

### Is Gravity Orbit Lab free?

Gravity Orbit Lab is free to download, with no in-app purchases.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*