200+ iOS apps curated and reviewed
Looking for free rissa citizen science apps? 19 of our 200+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | — | No | No | May 2026 |
| 2 |  | Free | 4.7★ (25K) | No | No | Aug 2026 |
| 3 |  | Free | 4.6★ (4.7K) | No | No | Aug 2026 |
| 4 |  | Free | 4.0★ (591) | No | No | Aug 2026 |
| 5 |  | Free | 4.8★ (10K) | No | Yes | Aug 2026 |
| 6 |  | Free | 4.8★ (31K) | No | No | Aug 2026 |
| 7 |  | Free | 4.5★ (8.6K) | No | Yes | Aug 2026 |
| 8 |  | Free | 4.8★ (61K) | No | Yes | Aug 2026 |
Easily manage your Citizen watch ownership. Identify your timepiece using tag scan, watch scan, or manual entry. Access setting instructions, activate your warranty, and store proof of purchase all within the app.
Record and identify species encounters with a simple interface. Contribute to scientific research and learn about biodiversity. Connect with other nature enthusiasts and explore the natural world.
Identify plants, animals, and fungi using your camera or imported photos. Get AI-powered species suggestions and connect with a global community of nature enthusiasts to learn more about the natural world and contribute to scientific conservation efforts.
Access expert insights on groundbreaking science and technology advances. Stay informed with news, commentary, and in-depth features from leading scientists. Explore the modern world through a trusted lens.
Identify plants, animals, and fungi using your phone's camera. Learn about the organisms around you and earn badges for your discoveries. It's a fun, kid-safe way to explore nature and expand your knowledge of the living world.
Engage young learners with interactive science lessons and experiments. Developed by educators, this app covers over 100 science topics for children aged 4-10, featuring real instructors and a curriculum aligned with science standards.
Instantly identify bird species using your phone's camera or microphone, or through a smart feeder. Collect digital postcards, learn fascinating facts, and contribute to conservation efforts with this global birdwatching community app.
Explore science at home with engaging videos and hands-on activities. Participate in citizen science projects or take virtual tours. This app brings the Center of Science and Industry's educational content to your family.
Transform your smartphone into a science notebook. Use your device's sensors and connect external hardware to gather real-time data, conduct experiments, and analyze findings. Ideal for students to explore the world scientifically.
Stay informed about the latest scientific breakthroughs, research, and expert insights. Access curated news, videos, and podcasts from top sources in an efficient, user-friendly interface. Engage with a community of science enthusiasts and personalize your feed.
Become a citizen scientist for the South Carolina Aquarium. Record wildlife observations, view community reports, and contribute to environmental protection efforts. This platform is powered by Anecdata.org, a free citizen science resource.
Access award-winning journalism on science and technology. Read daily news, watch videos, and listen to podcasts covering topics from AI to quantum physics. Log in with your subscription for full access.
Explore the world of science through interactive experiments and engaging games. This app guides you through real science activities, making learning fun and hands-on. Discover molecular structures and conduct your own science projects.
Identify plants by taking photos with your smartphone. Contribute to a global citizen science project to understand and preserve plant biodiversity. Recognizes thousands of wild and cultivated species.
Visualize professional-grade weather radar data with advanced tools for meteorologists, storm spotters, and enthusiasts. Access real-time radar information, severe weather alerts, and historical data with optional subscription tiers for enhanced capabilities.
Explore fundamental scientific concepts like light, sound, and electricity through interactive games and AR experiences. This app offers visual explanations and virtual experiments for young learners, guided by engaging characters.
Stay informed about local happenings with community-driven alerts and event listings. Customize notification preferences via push, text, or email. Access real-time updates from your municipality or county.
An ad-free educational app for children aged 5-12, offering engaging science lessons through interactive 3D animations and fun quizzes. It covers over 20 topics, fostering curiosity and developing critical thinking skills in a playful, story-driven environment.
Unlock your phone's sensors for scientific exploration. Conduct pre-built experiments or create your own using accelerometers, magnetometers, and more. Analyze and export data in various formats for further study.