Sonar Go vs Spearcast
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sonar Go
Monitor vehicles in real-time with GPS tracking, trip history, and diagnostic information. Receive alerts for events like speeding or geofence breaches, and store important car documents digitally.
- Real-time GPS tracking
- Trip history analysis
- Vehicle diagnostic data
- Driving behavior monitoring
- Customizable alerts
- Digital document storage
- Safe parking geofencing
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Introducing Sonar Go! The perfect solution for businesses and individuals who want total control over their vehicles in real time. With our application, you can easily access a set of exceptional features and benefits that revolutionize how you monitor your vehicle or fleet using GPS devices. Key Features: 1. Real-Time Tracking: Keep continuous track of your vehicles with real-time updates. With our advanced GPS technology, you can know the exact location of each vehicle at any time of the day. 2. Trip History: Get detailed information about the routes taken by your vehicles. Visualize and analyze the trips, distance covered, travel times, fuel consumption, and max RPM, allowing you to optimize your logistics operations. 3. Diagnostic Information: By accessing the OBD-II system, the tracker can provide essential vehicle diagnostic data, such as engine health, fuel efficiency, battery status, and more. This feature aids in proactive maintenance, early detection of issues, and overall vehicle health monitoring. 4. Driving Behavior: Monitor your drivers' driving patterns. Identify and address dangerous or inefficient behaviors such as harsh acceleration, sudden braking, or speeding, to improve road safety and reduce maintenance costs. 5. Alerts and Notifications: Receive instant alerts on important fleet events. Whether you want to be notified about speeding incidents, predefined geofence entries or exits, or any other custom event, our application will keep you informed at all times. 6. Real-Time Traffic: Obtain accurate traffic data on the routes used by your vehicles. Avoid traffic jams and reduce delivery times, optimizing your operations and improving overall fleet efficiency. 7. Digital Glovebox: Upload and securely store important car documents like title, registration, insurance, and more—all available anytime, anywhere. 8. Safe Parking: Set a virtual boundary around your parked car and receive alerts if it moves beyond the zone. Whether it's for avoiding a tow, preventing theft, or tracking when employees or loved ones leave the area, you’re always informed. Key Benefits: - Enhanced control and visibility: Our application provides total control over your fleets, enabling you to make informed and strategic decisions in real time. - Cost savings: By identifying and addressing inefficient driving habits and optimizing routes, you can reduce fuel and maintenance expenses for your vehicles. - Improved safety: Monitoring driving habits and receiving alerts on relevant events helps enhance road safety and prevent accidents. - Operational efficiency: With real-time information on traffic and routes, you can optimize your operations and improve overall fleet efficiency. Download Sonar Go now and experience the new era in GPS fleet monitoring. Keep your business or personal vehicles under absolute control, maximize efficiency, and make intelligent decisions for a more productive future. Your fleet, your success! Note: A subscription to Sonar Telematics is required to use this application. Not a customer yet? Contact us for more information.
Spearcast
Log spearfishing dives quickly and gain insights into ocean conditions and their impact on success. Automatically capture environmental data and analyze trends to improve your skills. Share reports and keep your dive history private.
- Effortless dive logging
- Automatic ocean/weather data capture
- Analyze dive success based on conditions
- Share visibility reports
- Private dive history
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Build your dive log. Expand your understanding of the ocean. Improve faster. Spearcast helps spearfisherman understand ocean conditions, track their dives, and learn what leads to success. Log dives in seconds — visibility, current, depth, species, and more. Spearcast automatically captures ocean and weather data so you can focus on diving, not data entry. Turn raw data into insight. See how conditions like tide, moon phase, and water movement impact your success/failure over time. Share visibility reports and see what other divers are reporting — without giving away your spots. Your data stays yours. Your dive history, your insights — all in one place.
Screenshots
Verdict
The clearest difference is update cadence: Spearcast at every 2 weeks against Sonar Go's monthly. Spearcast also leads on iOS requirement (15.1 vs 17.4). 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.
Sonar Go ships an update monthly, Spearcast every 2 weeks. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.
| Parameter | Sonar Go | Spearcast |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | 76.9% of reviews | — |
| Number of ratings | — | 1 — better |
| Update frequency | Monthly | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.4 | 15.1 — better |
| Further details — not scored | ||
| Size | 55 MB | 44 MB |
| Age rating | 4+ | 4+ |
| Developer | Sonar Telematics S A S | Rohan de Launey |
In-app purchases
Sonar Go
No in-app purchases
Spearcast
No in-app purchases









