170+ iOS apps curated and reviewed
The best usgs volcano apps on iPhone average 4.6★ across 170+ titles — we've ranked them by what real users actually keep on their phones. Updated June 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 5.0★ (2) | No | Yes | Jul 2026 |
| 2 |  | Free | 4.7★ (2.2K) | Yes | Yes | Jul 2026 |
| 3 |  | Free | 3.9★ (7) | No | No | May 2026 |
| 4 |  | Free | 4.9★ (115K) | No | No | Jul 2026 |
| 5 |  | Free | 4.8★ (186) | No | Yes | Jul 2026 |
| 6 |  | Free | 4.4★ (721) | No | Yes | Jul 2026 |
| 7 |  | Free | 4.8★ (134K) | Yes | No | Jul 2026 |
| 8 |  | Free | — | No | No | Jul 2026 |
Monitor real-time seismic and volcanic activity on Hawaii Island. Visualize subsurface data with 3D views, track live camera feeds, and receive custom alerts for changing conditions. Ideal for residents, researchers, and visitors interested in Hawaiian geology.
Track global volcanic activity with real-time alerts for ash clouds, seismic events, and more. Explore an interactive map featuring 2000+ volcanoes, webcams, and tectonic plate boundaries. Customize notifications for specific regions or countries.
Stay informed about volcanic activity with daily news and reports from multiple sources, including USGS and GeoNet. Get alert levels, aviation color codes, and detailed information on active volcanoes worldwide.
Explore over 420 national parks with interactive maps, self-guided tours, and essential on-the-ground information. Plan your visit with details on amenities, operating hours, and fees. Download park content for offline use, ensuring access even without internet service.
Track the latest seismic and volcanic activity globally. View earthquakes and active volcanoes on an interactive map or in a detailed list. Receive custom alerts for events near your location or specific areas of interest.
Stay informed about seismic and volcanic activity worldwide with real-time alerts, detailed maps, and historical data. Track earthquakes, volcanic eruptions, and tsunamis from over 30 trusted sources. Customize notifications and explore rich visualizations.
Stay informed about seismic activity with real-time earthquake alerts and a comprehensive global map. Track quakes, receive instant notifications, and search historical data. This free, ad-supported application provides detailed information on location, depth, and distance.
Track earthquakes worldwide with real-time alerts, customizable notifications, and detailed map layers. Access multiple data sources and view historical data. Premium features include wildfire and smoke tracking, volcano and hurricane alerts, and enhanced map options.
Stay informed about seismic and volcanic activity with real-time data, alerts, and detailed profiles. Access information on earthquakes, tsunamis, and volcanoes worldwide from trusted sources, with a focus on user privacy and multilingual support.
Get real-time updates on Kilauea volcano activity, including eruption status, forecasts, and observatory messages. View live camera feeds, ground deformation data, and summit weather. Features AI-powered summaries and multi-language translation.
Navigate any terrain with offline GPS maps, even without cell service. Explore a vast Map Store for hiking, biking, and travel, or import your own custom maps. Record tracks, add notes, and identify your location precisely.
Discover trails, campsites, and routes with detailed topographic maps and GPS navigation. Plan your adventures with offline maps, weather updates, and distance tracking. Explore hiking, off-roading, camping, and skiing with this comprehensive outdoor companion.
Access high-resolution topographic and park maps for offline GPS navigation. Download maps for national parks and USGS quadrangles across the USA. Ideal for road trips, hiking, and exploring areas with no data service.
Access real-time USGS and AHPS river level and flow data. Receive push notifications for flood status and view weather prediction charts for significant river flood outlooks and precipitation forecasts.
Access detailed USGS topographic maps and satellite imagery for offline use. Track your hikes with distance, elevation, and calorie data. View various data themes like trails, hydrography, and land cover.
Navigate and explore the world without an internet connection using detailed offline maps and turn-by-turn voice guidance. Plan multi-stop routes, record your adventures with GPS, and discover points of interest with fast offline search. Enjoy advanced features like 3D terrain and sync across devices.
This app provides real-time information on earthquakes worldwide. It features an interactive map, detailed reports, and customizable alerts. Stay informed about seismic activity near you or loved ones.
Navigate off-road with detailed trail maps, GPS, and compass features. Discover legal camping spots, filter trails by vehicle type and difficulty, and plan multi-day adventures. Access property lines, weather data, and cell coverage information for a safer off-roading experience.
Stay informed about seismic activity worldwide with real-time earthquake tracking and alerts. View detailed maps, filter by various criteria, and receive notifications for significant events. Access global data from multiple agencies to understand seismic trends.