Best Citizen Scientist Apps

250+ iOS apps curated and reviewed

4.6 avg rating
20 free apps
Updated November 2026

From beginner-friendly picks to power-user tools, our citizen scientist list covers 250+ iPhone apps updated through November 2026. Compare ratings, prices, and screenshots in one place.

Compare top Citizen Scientist Apps (November 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Citizen ScientistCitizen ScientistFree5.0★ (1)NoNoAug 2026
2iNaturalist ClassiciNaturalist ClassicFree4.6★ (4.7K)NoNoNov 2026
3Anecdata.orgAnecdata.orgFree5.0★ (4)NoNoJul 2026
4SC Aquarium Citizen ScienceSC Aquarium Citizen ScienceFree5.0★ (7)NoNoJul 2026
5Citizen Science SurveyCitizen Science SurveyFree—NoNoMay 2026
6Rissa Citizen ScienceRissa Citizen ScienceFree—NoNoMay 2026
7ZooniverseZooniverseFree3.7★ (38)NoNoOct 2026
8CAScienceCAScienceFree—NoNoNov 2026

Top Picks for Citizen Scientist

5.0(1 ratings)
Free
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This app uses ecological momentary assessment to track how your environment impacts your mental wellbeing. It prompts you with questions, allows for photos and audio recordings, and provides personalized reports. Your anonymous data helps researchers understand environmental influences on mental health.

iNaturalist Classic#2

iNaturalist Classic by iNaturalist

Connect with Nature
Strong Contender
📚 Education
4.6😊(4.7K ratings)
Free
iNaturalist Classic screenshot 1
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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.

What We Love

  • 👍 Helpful for identifying plants, animals, and fungi
  • 🤝 Supportive community of experts
  • 🌱 Contributes to citizen science and research
  • 🔍 Accurate identification suggestions
  • 🌐 Works well globally
  • 📚 Expands knowledge of local biodiversity

Room to Improve

  • 🐛 Occasional crashes or bugs
  • 🔍 Difficulty finding/sorting observations
  • 🔒 Privacy concerns around data sharing
  • 🤖 Concerns about AI/ML identification accuracy
  • 💬 Negative interactions with some community members
Anecdata.org#3

Anecdata.org by MDI Biological Laboratory

Citizen science for everybody
Worth Considering
📚 Education
5.0(4 ratings)
Free
Anecdata.org screenshot 1
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This platform empowers users to create, manage, and participate in citizen science projects. It facilitates data collection in the field, even offline, and supports project analysis and download.

More Citizen Scientist apps to explore

FAQ about Citizen Scientist

What are the best citizen scientist apps for iPhone?
Citizen Scientist tops our citizen scientist apps ranking as of November 2026, with a 5.0-star average from 1 App Store ratings, and it's free to download.
Yes — 20 of the top citizen scientist apps we rank are free to download, including Citizen Scientist and iNaturalist Classic.
Citizen Scientist has no ads and has no in-app purchases, according to its App Store listing as of November 2026.
We track 250+ citizen scientist apps on the iOS App Store as of November 2026, ranked by rating, recency, and analysis of real user reviews.

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