SmartSignal vs 911Cellular BusTracker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SmartSignal
Access and control your security system remotely via your smartphone or tablet. View live footage and interact with your system from any location after creating an account and adding your device.
- Remote security system access
- View live footage
- Interact with security system
- Create user account
- Add security system
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Defender SmartSignal enables users to view and interact with their security system using a smartphone or tablet device from anywhere. Create an account, add your system and view or interact with your footage all from the Defender SmartSignal app.
911Cellular BusTracker
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Track bus or shuttle locations with this companion app to 911Cellular suite of safety applications.
Screenshots
Verdict
The clearest difference is iOS requirement: SmartSignal at 9.0 against 911Cellular BusTracker's 14.0. On price, update cadence, ads and in-app purchases 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.
SmartSignal ships an update every 13 months, 911Cellular BusTracker every 7 months. The most recent releases landed on September 21, 2026 and September 14, 2026 respectively.
| Parameter | SmartSignal | 911Cellular BusTracker |
|---|---|---|
| Price | Free | Free |
| Rating | 1.5 (29 ratings) — better | — |
| Positive reviews | 4.3% of reviews | — |
| Number of ratings | 29 — better | — |
| Update frequency | Every 13 months | Every 7 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 9.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 129 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Empowerment Technologies Inc. | 911Cellular |
In-app purchases
SmartSignal
No in-app purchases
911Cellular BusTracker
No in-app purchases
Questions
Is SmartSignal free?
Is 911Cellular BusTracker free?
Do SmartSignal or 911Cellular BusTracker have ads?
Which is updated more often, SmartSignal or 911Cellular BusTracker?
Other comparisons
