# STS TESSmobile vs DBHS Bells

The clearest difference is rating: STS TESSmobile at 5.0 against DBHS Bells's 4.7. DBHS Bells's advantage is update cadence (monthly vs every 4 months) and ratings volume (12 vs 2). On price, ads, in-app purchases and monetization model there is nothing between them.

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

STS TESSmobile holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: DBHS Bells has 12 ratings behind it against 2, so its average is the more settled of the two.

STS TESSmobile ships an update every 4 months, DBHS Bells monthly. Both last shipped on October 24, 2026.

## The numbers

| Metric | STS TESSmobile | DBHS Bells |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/sts-tessmobile/id1470671505/reviews)** | [4.7 (12 ratings)](https://appshunter.io/ios/app/dbhs-bells/id1521113829/reviews) |
| Number of ratings | 2 | **12** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | Free | Free |
| Size | 14 MB | 2 MB |
| Requires iOS | 15.0 | **14** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Superior Traffic Services, LLC](https://appshunter.io/developer/1470671504) | [Jeremiah Wai](https://appshunter.io/developer/1482501701) |

## What reviewers say

### STS TESSmobile

[App page](https://appshunter.io/ios/app/sts-tessmobile/id1470671505)

Monitor and control traffic light systems remotely. View real-time traffic signal status and adjust configurations for efficient traffic management.

**Highlights:** View traffic light status, Manage traffic light configuration, Remote monitoring, Real-time data

**Features:** macOS Compatibility

**In-app purchases:** none


### DBHS Bells

[App page](https://appshunter.io/ios/app/dbhs-bells/id1521113829)

This app provides students with the daily bell schedule and timely notifications for upcoming classes. It also offers a teacher mode with customizable alerts before class dismissal.

**Highlights:** Daily bell schedule, Local notifications for class start, Teacher mode with dismissal alerts, Customizable warning minutes, Diamond Bar High School specific

**In-app purchases:** none


## Frequently asked questions

### Is STS TESSmobile free?

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

### Is DBHS Bells free?

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

### Which has better reviews, STS TESSmobile or DBHS Bells?

STS TESSmobile is rated higher. STS TESSmobile averages 5.0 out of 5 from 2 ratings, while DBHS Bells averages 4.7 from 12 ratings.

### Do STS TESSmobile or DBHS Bells have ads?

Neither STS TESSmobile nor DBHS Bells shows ads.

### Which is updated more often, STS TESSmobile or DBHS Bells?

STS TESSmobile ships an update every 4 months, and DBHS Bells monthly. Most recently, STS TESSmobile was updated on October 24, 2026 and DBHS Bells on October 24, 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.*