# 掌心校园 vs 三信通

The clearest difference is update cadence: 三信通 at every 4 days against 掌心校园's monthly. 掌心校园's advantage is iOS requirement (8.0 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.

掌心校园 ships an update monthly, 三信通 every 4 days. The most recent releases landed on October 26, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | 掌心校园 | 三信通 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 days** |
| Size | 20 MB | 8 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [成阳 杨](https://appshunter.io/developer/1098521736) | [祝 彭](https://appshunter.io/developer/1289116262) |

## What reviewers say

### 掌心校园

[App page](https://appshunter.io/ios/app/id1289130460)

**Features:** macOS Compatibility

**In-app purchases:** none


### 三信通

[App page](https://appshunter.io/ios/app/id6445873540)

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

**In-app purchases:** none


## Frequently asked questions

### Is 掌心校园 free?

掌心校园 is free to download, with no in-app purchases.

### Is 三信通 free?

三信通 is free to download, with no in-app purchases.

### Do 掌心校园 or 三信通 have ads?

Neither 掌心校园 nor 三信通 shows ads.

### Which is updated more often, 掌心校园 or 三信通?

掌心校园 ships an update monthly, and 三信通 every 4 days. Most recently, 掌心校园 was updated on October 26, 2026 and 三信通 on October 30, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*