# 竹知了3D vs Ear Sonar

The clearest difference is device support: 竹知了3D at 3 against Ear Sonar's —. 竹知了3D also leads on iOS requirement (13.0 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 | 竹知了3D | Ear Sonar |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | — |
| Update frequency | Daily | — |
| Size | 95 MB | 18 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [远青 谢](https://appshunter.io/developer/1705671931) | [乃君 黄](https://appshunter.io/developer/1337343608) |

## What reviewers say

### 竹知了3D

[App page](https://appshunter.io/ios/app/3d/id6798277296)

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

**In-app purchases:** none


### Ear Sonar

[App page](https://appshunter.io/ios/app/ear-sonar/id6800315771)

**In-app purchases:** none


## Frequently asked questions

### Is 竹知了3D free?

竹知了3D is free to download, with no in-app purchases.

### Is Ear Sonar free?

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

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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.*