DuoIoT vs OTS GPS Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DuoIoT
Real-time GPS tracking for vehicles, equipment, and assets. Monitor locations, review trip history, and set up custom alerts for important areas. Secure and reliable asset management.
- Real-time GPS tracking
- Vehicle and equipment monitoring
- Historical trip playback
- Interactive map view
- Geofence creation
- Customizable alerts
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DuoIoT is a feature-packed GPS tracking application allowing you to monitor and manage vehicles, equipment, and other assets in real-time. With our easy-to-install GPS trackers, you can view location updates, playback historical trips via an interactive map, create geofence important areas to receive custom alerts, and much more. Whether you're monitoring a commercial fleet, construction equipment, protecting valuables in transit, or keeping tabs on family vehicles, DuoIoT provides the features you need. Our platform is secure, reliable, and easy to use. Sign up now to start tracking and managing your assets in real-time!
OTS GPS Pro
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Simple | Effective | Easy to Use Online Tracking Solutions combine sophisticated GPS tracking technology with flexible, advanced mapping and reporting software. A GPS-enabled Vehicle Tracking Device is installed on each vehicle to collect and transmit tracking data via a cellular and satellite network, whichever works best for your operations. The device then delivers the data to web.tracking.lk hosted application, which you can access through the Web at any time. You will receive real-time vehicle tracking updates, including location, direction, speed, idle time, start/stop and more, allowing you to manage a tighter schedule and more efficient fleet. Easy to Use Vehicle Tracking Software Immediately upon installation, you are ready to track a vehicle wherever it goes. There’s almost no learning curve for web.tracking.lk users. Our customers tell us that the easy-to-use Online Tracking Solutions interface gives them a completely new perspective on fleet management with insight into vehicle usage, driver habits, scheduling and efficiency & here’s an unexpected benefit : Piece of mind, Knowing where and how your vehicles are being used.
Screenshots
Verdict
The clearest difference is update cadence: DuoIoT at weekly against OTS GPS Pro's every 2 months. DuoIoT also leads on iOS requirement (12.0 vs 14.0.0). On price, ads, in-app purchases and device support 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.
DuoIoT ships an update weekly, OTS GPS Pro every 2 months. The most recent releases landed on October 9, 2026 and October 6, 2026 respectively.
| Parameter | DuoIoT | OTS GPS Pro |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Weekly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 14.0.0 |
| Further details — not scored | ||
| Size | 41 MB | 62 MB |
| Age rating | 4+ | 4+ |
| Developer | Shenzhen Dualmi Technology Co., Ltd. | Sudarshana Wijethunga |
In-app purchases
DuoIoT
No in-app purchases
OTS GPS Pro
No in-app purchases









