# i花椒 vs 51飞鸟

The clearest difference is update cadence: 51飞鸟 at every 6 weeks against i花椒's every 6 months. i花椒's advantage is iOS requirement (9.0 vs 12.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

i花椒 ships an update every 6 months, 51飞鸟 every 6 weeks. The most recent releases landed on September 13, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | i花椒 | 51飞鸟 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 25.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 6 weeks** |
| Monetization | — | Free |
| Size | 188 MB | 60 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [华东交通大学](https://appshunter.io/developer/1070814938) | [北京学研汇智网络科技有限公司](https://appshunter.io/developer/1171097549) |

## What reviewers say

### i花椒

[App page](https://appshunter.io/ios/app/i/id1181352992)

**Features:** macOS Compatibility

**In-app purchases:** none


### 51飞鸟

[App page](https://appshunter.io/ios/app/51/id1301860494)

This application helps university students improve their English skills through online learning. It allows users to view course lists, check in online, practice tests, and communicate with peers. The platform also tracks assignment completion.

**Highlights:** Online English courses, Course list viewing, Online check-in, Practice test exercises, Peer communication, Assignment tracking

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

**In-app purchases:** none


## Frequently asked questions

### Is i花椒 free?

i花椒 is free to download, with no in-app purchases.

### Is 51飞鸟 free?

51飞鸟 is free to download, with no in-app purchases.

### Do i花椒 or 51飞鸟 have ads?

Neither i花椒 nor 51飞鸟 shows ads.

### Which is updated more often, i花椒 or 51飞鸟?

i花椒 ships an update every 6 months, and 51飞鸟 every 6 weeks. Most recently, i花椒 was updated on September 13, 2026 and 51飞鸟 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.*