# Card Stack 3D! vs Retro Bird

The clearest difference is in-app purchases: Card Stack 3D! at none against Retro Bird's 1. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Retro Bird sells 1 one-off in-app purchase. Card Stack 3D! asks for nothing beyond the download.

## The numbers

| Metric | Card Stack 3D! | Retro Bird |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Monthly | — |
| Size | 91 MB | 58 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Playnoob](https://appshunter.io/developer/1627222754) | [Sergey Zapuhlyak](https://appshunter.io/developer/1243793877) |

## What reviewers say

### Card Stack 3D!

[App page](https://appshunter.io/ios/app/card-stack-3d/id6476606048)

**Features:** macOS Compatibility

**In-app purchases:** none


### Retro Bird

[App page](https://appshunter.io/ios/app/retro-bird-fluid-calming-game/id6482352809)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Version | $2.99 | one-time |


## Frequently asked questions

### Is Card Stack 3D! free?

Card Stack 3D! is free to download, with no in-app purchases.

### Is Retro Bird free?

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

### Do Card Stack 3D! or Retro Bird have ads?

Both Card Stack 3D! and Retro Bird 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.*