# 燕子ai vs 快捷API

The clearest difference is in-app purchases: 燕子ai at none against 快捷API's 8. 快捷API's advantage is update cadence (every 3 weeks vs every 8 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 快捷API sells 8 one-off in-app purchases. 燕子ai asks for nothing beyond the download.

燕子ai ships an update every 8 months, 快捷API every 3 weeks. The most recent releases landed on November 8, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | 燕子ai | 快捷API |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 3 weeks** |
| Size | 47 MB | 25 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Shenzhen Lingnan Times Network Technology Co., Ltd.](https://appshunter.io/developer/1651566031) | [长春幻隐网络科技有限公司](https://appshunter.io/developer/1891700213) |

## What reviewers say

### 燕子ai

[App page](https://appshunter.io/ios/app/ai/id6478473750)

**Features:** macOS Compatibility

**In-app purchases:** none


### 快捷API

[App page](https://appshunter.io/ios/app/api/id6761834827)

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 余额充值 10 | $0.99 | one-time |
| 余额充值 30 | $3.99 | one-time |
| 余额充值 50 | $6.99 | one-time |
| 余额充值 100 | $14.99 | one-time |
| 余额充值 150 | $19.99 | one-time |
| 余额充值 200 | $29.99 | one-time |
| 余额充值 300 | $39.99 | one-time |
| 余额充值 500 | $69.99 | one-time |


## Frequently asked questions

### Is 燕子ai free?

燕子ai is free to download, with no in-app purchases.

### Is 快捷API free?

快捷API is free to download, with in-app purchases available.

### Do 燕子ai or 快捷API have ads?

Neither 燕子ai nor 快捷API shows ads.

### Which is updated more often, 燕子ai or 快捷API?

燕子ai ships an update every 8 months, and 快捷API every 3 weeks. Most recently, 燕子ai was updated on November 8, 2026 and 快捷API on November 5, 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.*