# 中国联通 vs SAS TMS

The clearest difference is rating: 中国联通 at 2.5 against SAS TMS's 2.0. 中国联通 also leads on ratings volume (1.3K vs 8) and update cadence (monthly vs every 2 months). SAS TMS's advantage is review sentiment (67% vs 37%) and 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.

中国联通 holds the better App Store score, 2.5 against 2.0. That said, the two scores are not equally well evidenced: 中国联通 has 1.3K ratings behind it against 8, so its average is the more settled of the two. Written reviews complicate that: 37% of 中国联通's written reviews are positive against 67% of SAS TMS's, so the app with the better star average is not the one people write more warmly about.

中国联通 ships an update monthly, SAS TMS every 2 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | 中国联通 | SAS TMS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.5 (1.3K ratings)](https://appshunter.io/ios/app/id416457422/reviews)** | [2.0 (8 ratings)](https://appshunter.io/ios/app/sas-tms/id1035605698/reviews) |
| Number of ratings | **1.3K** | 8 |
| Positive reviews | 36.9% of reviews | **66.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | — | Free |
| Size | 334 MB | 12 MB |
| Requires iOS | 13.0 | **9.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [China United Network Communications Corporation Limited](https://appshunter.io/developer/674392285) | [上海创程车联网络科技有限公司](https://appshunter.io/developer/1011702853) |

## What reviewers say

### 中国联通

[App page](https://appshunter.io/ios/app/id416457422)

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Convenient app
- 🚀 Fast and responsive
- 💡 Comprehensive functionality

**What reviewers complain about**

- 🐛 Frequent crashes
- 🔋 High battery consumption
- 📢 Too many ads and promotions
- 🤯 Confusing and cluttered UI
- 🔒 Privacy concerns

**Reported bugs**

- Login issues and authentication problems
- Compatibility problems with newer OS versions
- Inconsistent performance across devices

**Requested features**

- Add English language support
- Improve search and navigation
- Provide more detailed account information
- Implement dark mode option


### SAS TMS

[App page](https://appshunter.io/ios/app/sas-tms/id1035605698)

This app allows parents to monitor their children's school bus activity. It tracks card swipes for boarding and disembarking, and provides real-time bus location and monitor information. Parents can also view school notices and punch card records.

**Highlights:** Student card swipe monitoring, Real-time bus location tracking, Bus monitor information, School notice viewing, Punch card record access

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 中国联通 free?

中国联通 is free to download, with no in-app purchases.

### Is SAS TMS free?

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

### Which has better reviews, 中国联通 or SAS TMS?

中国联通 is rated higher. 中国联通 averages 2.5 out of 5 from 1.3K ratings, while SAS TMS averages 2.0 from 8 ratings.

### Do 中国联通 or SAS TMS have ads?

Neither 中国联通 nor SAS TMS shows ads.

### Which is updated more often, 中国联通 or SAS TMS?

中国联通 ships an update monthly, and SAS TMS every 2 months. Most recently, 中国联通 was updated on November 1, 2026 and SAS TMS on November 2, 2026.

---

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