Contribute to real scientific research by making environmental observations. Document clouds, mosquito habitats, land cover, and trees using your mobile device. Your data supports scientists worldwide, including NASA and NOAA.





248+ iOS apps curated and reviewed
GLOBE Observer is the household name in contrails observer, but it's far from the only option. We track 248+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 | Free | 3.1★ (82) | No | No | Jul 2026 | |
| 2 | Free | 4.7★ (191K) | Yes | No | Aug 2026 | |
| 3 | Free | 3.1★ (545) | No | No | Aug 2026 | |
| 4 | Free | — | No | No | Jul 2026 | |
| 5 | Free | — | No | No | Jul 2026 | |
| 6 | Free | 4.9★ (67) | Yes | Yes | Jul 2026 | |
| 7 | Free | 5.0★ (1) | No | Yes | Aug 2026 | |
| 8 | Free | 4.8★ (22K) | Yes | No | Aug 2026 |





Contribute to real scientific research by making environmental observations. Document clouds, mosquito habitats, land cover, and trees using your mobile device. Your data supports scientists worldwide, including NASA and NOAA.






Get accurate local weather forecasts and alerts, including detailed temperature tracking, snow predictions, and severe weather warnings. Visualize weather patterns with interactive radar and maps, and plan travel with global forecasts for up to 20 cities. Enjoy a beautiful, immersive interface with stunning photography and animated weather modules.






Access real-time and forecasted air quality data for your local area and any other location. Plan your day and protect your health by understanding current air conditions.






Get real-time weather data from nearly every ICAO registered airport. This app provides aviation-focused weather information with a humorous, no-nonsense attitude, designed to entertain while delivering crucial data.


This app provides professional-grade turbulence forecasts and maps for flights. It offers flight history saving for offline access, custom forecast generation, and statistics on past turbulence. It also includes resources to help anxious flyers understand and overcome their fear of flying.


Earn rewards by participating in surveys, tasks, and research. You control what data is shared and how it's used. Your contributions help improve apps and services.


Get quick and easy weather details for any location with this elegant app. It provides current conditions, hourly forecasts for up to 10 days, and uses heat mapping colors to visualize temperatures beautifully. Save unlimited locations and view them on a map.


Monitor global lightning strikes in near real-time on a live map. Receive alerts for nearby storms and view historical strike data. Track weather radar and share strike information with friends.


This app allows you to monitor real-time weather and indoor air quality data from your smart weather station directly on your iPhone. View historical data, receive event notifications, and access a 7-day forecast for your specific location.


This app provides real-time weather forecasts, wind speeds at various altitudes, and no-fly zone information for drone pilots. It offers hyperlocal forecasts, a 7-day outlook, and customizable settings to enhance flight safety and planning.


Get real-time, accurate air quality data with a live map, personalized alerts, and science-based guidance. Plan your day, reduce exposure, and protect your health with actionable insights.


Access real-time and forecasted air quality data for over 500,000 locations worldwide. Understand pollutant levels, receive health recommendations, and track wildfire and pollen information to plan your day safely.


This app allows users to collect, categorize, and visualize everyday data. Create custom charts and graphs to gain insights from your tracked information. Organize data into detailed records with flexible entry formats and attributes.


Gain access to your personal data circulating online and take control of your digital identity. Choose to share your data for rewards or keep it private. This app empowers you to understand and manage your online presence.


Track all your flight data conveniently on your mobile device. Organize flights by month, filter by aircraft or airport, and upload logs easily. Get detailed analysis of your flights with over 30 calculated parameters and graphs.


Document environmental changes and share your observations to contribute to climate change research. Connect with your community, discuss local challenges, and help drive solutions.


Get hyper-local weather updates with high-resolution radar and satellite imagery. Track severe weather with future radar and receive timely alerts. Save favorite locations and access detailed forecasts.


Get hyper-local weather updates with high-resolution radar and future radar to track severe weather. This app provides current conditions, hourly and daily forecasts, and customizable alerts for your favorite locations.