# i4im vs 天锐蓝盾

The clearest difference is update cadence: 天锐蓝盾 at monthly against i4im's every 2 months. i4im's advantage is iOS requirement (11.0 vs 15.6). 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.

i4im ships an update every 2 months, 天锐蓝盾 monthly. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | i4im | 天锐蓝盾 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Size | 46 MB | 150 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [etion Intelligent Technology Co., Ltd.](https://appshunter.io/developer/1491904986) | [厦门天锐科技股份有限公司](https://appshunter.io/developer/517212805) |

## What reviewers say

### i4im

[App page](https://appshunter.io/ios/app/i4im/id1491904987)

**In-app purchases:** none


### 天锐蓝盾

[App page](https://appshunter.io/ios/app/id1541569836)

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

**In-app purchases:** none


## Frequently asked questions

### Is i4im free?

i4im is free to download, with no in-app purchases.

### Is 天锐蓝盾 free?

天锐蓝盾 is free to download, with no in-app purchases.

### Do i4im or 天锐蓝盾 have ads?

Neither i4im nor 天锐蓝盾 shows ads.

### Which is updated more often, i4im or 天锐蓝盾?

i4im ships an update every 2 months, and 天锐蓝盾 monthly. Most recently, i4im was updated on November 7, 2026 and 天锐蓝盾 on November 3, 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.*