# Echo Line vs Gravity Blocks 3D

The clearest difference is ads: Echo Line at none against Gravity Blocks 3D's shown. Gravity Blocks 3D's advantage is iOS requirement (15.0 vs 17.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Echo Line ships an update every 4 days, Gravity Blocks 3D every 2 days. The most recent releases landed on October 11, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Echo Line | Gravity Blocks 3D |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 4 days | **Every 2 days** |
| Size | 3 MB | 267 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Paride Di Lazzaro](https://appshunter.io/developer/6787651798) | [Ahmed Salim](https://appshunter.io/developer/6782794001) |

## What reviewers say

### Echo Line

[App page](https://appshunter.io/ios/app/echo-line/id6792265273)

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

**In-app purchases:** none


### Gravity Blocks 3D

[App page](https://appshunter.io/ios/app/gravity-blocks-3d/id6792556521)

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

**In-app purchases:** none


## Frequently asked questions

### Is Echo Line free?

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

### Is Gravity Blocks 3D free?

Gravity Blocks 3D is free to download, with no in-app purchases.

### Do Echo Line or Gravity Blocks 3D have ads?

Gravity Blocks 3D shows ads; Echo Line does not.

### Which is updated more often, Echo Line or Gravity Blocks 3D?

Echo Line ships an update every 4 days, and Gravity Blocks 3D every 2 days. Most recently, Echo Line was updated on October 11, 2026 and Gravity Blocks 3D on October 12, 2026.

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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.*