STS TESSmobile vs DBHS Bells
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
STS TESSmobile
Monitor and control traffic light systems remotely. View real-time traffic signal status and adjust configurations for efficient traffic management.
- View traffic light status
- Manage traffic light configuration
- Remote monitoring
- Real-time data
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View current traffic light status and manage configuration.
DBHS Bells
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.
- Daily bell schedule
- Local notifications for class start
- Teacher mode with dismissal alerts
- Customizable warning minutes
- Diamond Bar High School specific
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DBHS Bells is an app for Diamond Bar High School students in Diamond Bar, California. Students can check the daily bell schedule and get local notifications (alerts) before class begins. Teacher mode will give a warning before the class ends. The number of minutes warning can be customized.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | STS TESSmobile | DBHS Bells |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 4.7 (12 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 2 | 12 — better |
| Update frequency | Every 4 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 15.0 | 14 — better |
| Further details — not scored | ||
| Size | 14 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Superior Traffic Services, LLC | Jeremiah Wai |
Customer experience
STS TESSmobile
DBHS Bells
In-app purchases
STS TESSmobile
No in-app purchases
DBHS Bells
No in-app purchases
