# 工程e vs Echo Frog

The clearest difference is in-app purchases: 工程e at none against Echo Frog's 1. 工程e also leads on iOS requirement (9.0 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Echo Frog sells 1 one-off in-app purchase. 工程e asks for nothing beyond the download.

工程e ships an update monthly, Echo Frog every 6 weeks. The most recent releases landed on September 15, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | 工程e | Echo Frog |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 6 weeks |
| Size | 101 MB | 2 MB |
| Requires iOS | **9.0** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Yun Lian Wan Qi Technology Co., Ltd.](https://appshunter.io/developer/1138675930) | [云涛 贾](https://appshunter.io/developer/1887721892) |

## What reviewers say

### 工程e

[App page](https://appshunter.io/ios/app/e/id1507935157)

**Features:** macOS Compatibility

**In-app purchases:** none


### Echo Frog

[App page](https://appshunter.io/ios/app/echo-frog-speak-and-repeat/id6762504743)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Voices | $0.99 | one-time |


## Frequently asked questions

### Is 工程e free?

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

### Is Echo Frog free?

Echo Frog is free to download, with in-app purchases available.

### Do 工程e or Echo Frog have ads?

Neither 工程e nor Echo Frog shows ads.

### Which is updated more often, 工程e or Echo Frog?

工程e ships an update monthly, and Echo Frog every 6 weeks. Most recently, 工程e was updated on September 15, 2026 and Echo Frog on September 10, 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.*