Visla GPS vs HydraAtlas
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Visla GPS
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Visla GPS is the ideal app to monitor and manage your GPS devices in a simple, fast, and secure way. Wherever you are, you always have full control of your vehicles and devices directly from your smartphone. Key features Real-time location on an interactive map Route history and detailed trip reports Smart alerts: vibration, low battery, geofence Multi-device management in a single app Instant push notifications Free sharing with friends and family: they can view the location and receive alerts at no additional cost Perfect for Private users who want to protect cars, motorcycles, and scooters Companies managing and monitoring vehicle fleets Families who want to share real-time security of their vehicles Subscriptions You can easily activate a subscription directly within the app to unlock advanced features and premium services. Security and updates Visla GPS is constantly evolving: new features, stability improvements, and security enhancements are regularly released. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
HydraAtlas
This app provides detailed flood risk information for any US location using official FEMA data. It offers real-time updates on stream gauges, weather alerts, and radar, helping users make informed decisions about potential flood hazards.
- FEMA flood zone mapping
- USGS stream gauge readings
- National Weather Service alerts
- Interactive weather radar
- Save monitored locations
- Emergency preparedness info
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The purpose of this app is to help inform users of where flood risk exists. You will be able to pull up official US FEMA Flood zone information and run an analysis for any location in the United States. This app primariliy depends on and uses Open Data from the U.S. Government. Therefore, it's really only applicable in the United States, for now. HydraAtlas is your comprehensive flood monitoring companion. Get real-time data from official sources, including: FEMA flood zones, USGS stream gauges, Rain Gauges, real-time Weather, and National Weather Service alerts. Key Features: Live FEMA flood zone mapping Real-time USGS stream gauge readings National Weather Service weather alerts Interactive weather radar Save important locations for monitoring Emergency preparedness information HydraAtlas combines official government data sources to help you make informed decisions about flood risks in your area. Perfect for homeowners, travelers, and anyone who needs reliable flood information. Data sources: FEMA, USGS, National Weather Service
Screenshots
Verdict
The clearest difference is in-app purchases: HydraAtlas at none against Visla GPS's 10. HydraAtlas also leads on update cadence (every 4 days vs every 11 days). On price, ads, device support and iOS requirement 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. Visla GPS sells 10 in-app purchases, starting at $34.99 per year. HydraAtlas asks for nothing beyond the download.
Visla GPS ships an update every 11 days, HydraAtlas every 4 days. Both last shipped on October 30, 2026.
| Parameter | Visla GPS | HydraAtlas |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (3 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 3 — better |
| Update frequency | Every 11 days | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 128 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Visla SRLS | Kevin Bullock |
In-app purchases
Visla GPS
- Annuale - 1 Dispositivo1 Month trial$34.991 Year
- Annuale - 2 Dispositivi1 Month trial$69.991 Year
- Annuale - 3 Dispositivi1 Month trial$89.991 Year
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- Annuale - 4 Dispositivi1 Month trial$119.991 Year
- Annuale - 5 Dispositivi1 Month trial$149.991 Year
- Annuale - 6 Dispositivi1 Month trial$179.991 Year
- Annuale - 7 Dispositivi1 Month trial$199.991 Year
- Annuale - 8 Dispositivi1 Month trial$229.991 Year
- Annuale - 9 Dispositivi1 Month trial$249.991 Year
- Annuale - 10 Dispositivi1 Month trial$299.991 Year
HydraAtlas
No in-app purchases









