# i vs 校园应急播报

The clearest difference is update cadence: i at every 2 months against 校园应急播报's every 29 months. i also leads on iOS requirement (9.0 vs 13.0). 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 ships an update every 2 months, 校园应急播报 every 29 months. The most recent releases landed on October 4, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | i | 校园应急播报 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 29 months |
| Size | 26 MB | 6 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Guangdong AVCiT Technology Holding Co.,Ltd.](https://appshunter.io/developer/1019471401) | [Guangzhou DSPPA Audio Co., Ltd.](https://appshunter.io/developer/1408491681) |

## What reviewers say

### i

[App page](https://appshunter.io/ios/app/i-ctl/id1019471402)

**Features:** macOS Compatibility

**In-app purchases:** none


### 校园应急播报

[App page](https://appshunter.io/ios/app/id6451129401)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is i free?

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

### Is 校园应急播报 free?

校园应急播报 is free to download, with no in-app purchases.

### Do i or 校园应急播报 have ads?

Neither i nor 校园应急播报 shows ads.

### Which is updated more often, i or 校园应急播报?

i ships an update every 2 months, and 校园应急播报 every 29 months. Most recently, i was updated on October 4, 2026 and 校园应急播报 on October 2, 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.*