# 咚咚燕助手 vs OpenScreen

The clearest difference is price: 咚咚燕助手 at Free against OpenScreen's $5.99. 咚咚燕助手 also leads on iOS requirement (11.0 vs 17.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

咚咚燕助手 is free to download; OpenScreen costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

咚咚燕助手 ships an update every 3 weeks, OpenScreen fortnightly. The most recent releases landed on October 11, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | 咚咚燕助手 | OpenScreen |
| --- | --- | --- |
| Price | **Free** | $5.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Size | 46 MB | 5 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Beijing Weidong Hong-plus Education & Technology Co., Ltd.](https://appshunter.io/developer/1112074973) | [建斌 孙](https://appshunter.io/developer/1883570628) |

## What reviewers say

### 咚咚燕助手

[App page](https://appshunter.io/ios/app/id1576662411)

**Features:** macOS Compatibility

**In-app purchases:** none


### OpenScreen

[App page](https://appshunter.io/ios/app/openscreen-screen-demo-maker/id6771039930)

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

**In-app purchases:** none


## Frequently asked questions

### Is 咚咚燕助手 free?

咚咚燕助手 is free to download, with no in-app purchases.

### Is OpenScreen free?

OpenScreen costs $5.99, with no in-app purchases.

### Do 咚咚燕助手 or OpenScreen have ads?

Neither 咚咚燕助手 nor OpenScreen shows ads.

### Which is updated more often, 咚咚燕助手 or OpenScreen?

咚咚燕助手 ships an update every 3 weeks, and OpenScreen fortnightly. Most recently, 咚咚燕助手 was updated on October 11, 2026 and OpenScreen on September 27, 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.*