MERLIN vs Universal Speedometer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MERLIN
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MERLIN is the surveillance hub on mobile devices with cloud-optimized features. With the compatibility with multiple devices, you can control the camera, retrieve videos, view device status, and get alerts without using a computer. Users can store, manage, record, and play video remotely with various security and practical features. It's easy to operate without a complicated setup, and all contents are transmitted with industrial-grade transmission. ## Features: 1. Connect to NVR and IPCAM by P2P 2. Live view with fluent streaming (depends on network condition) 3. Playback recordings on NVR 4. Push notification to catch any event 5. Landscape viewing to maximize the image 6. Event list and filter for management
Universal Speedometer
Track your speed and direction with this versatile tool. It offers analog and digital speedometer views, a compass, and trip statistics. Set speed limits, measure acceleration, and use HUD mode for windshield projection. Supports MPH, KMH, and Knots.
- Analog and digital speedometer
- Compass for direction
- Speed limit alerts
- Acceleration measurement
- HUD mode for windshield
- Multiple unit support (MPH, KMH, Knots)
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Universal Speedometer shows how fast you move. You can use it in a car, on a motorcycle, bicycle, scooter, boat, or even on a train. - It has a speedometer that works in both analog and digital style. There’s also a compass so you always know your direction. - You can see your current speed, your average speed, and the maximum speed during your trip. If you want, you can set a speed limit. The app will let you know when you go over it. - There’s a simple tool to measure acceleration, how fast your vehicle picks up speed. And for drivers, the HUD mode projects the speed right onto the windshield, so you don’t have to look down at your phone. - You can also choose the units you like: MPH, KMH, or Knots. It’s useful for short rides in the city, long road trips, cycling sessions, or sailing. Just open the app, set your view, and keep track of your speed.
Screenshots
Verdict
The clearest difference is update cadence: MERLIN at every 4 weeks against Universal Speedometer's every 5 months. MERLIN also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price, 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.
MERLIN ships an update every 4 weeks, Universal Speedometer every 5 months. The most recent releases landed on January 30, 2026 and September 3, 2026 respectively.
| Parameter | MERLIN | Universal Speedometer |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.0 (4 ratings) — better |
| Number of ratings | — | 4 — better |
| Update frequency | Every 4 weeks — better | Every 5 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 48 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Merlin Cloud Security Corp. | Evgheni Mihailevschi |
In-app purchases
MERLIN
No in-app purchases
Universal Speedometer
No in-app purchases
Questions
Is MERLIN free?
Is Universal Speedometer free?
Do MERLIN or Universal Speedometer have ads?
Which is updated more often, MERLIN or Universal Speedometer?
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