Zooniverse vs iSeaTree
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Zooniverse
Participate in real scientific research by classifying data for projects across various disciplines. Contribute to discoveries and datasets that advance knowledge, all from your mobile device. This platform connects volunteers with professional researchers for impactful citizen science.
- People-powered research platform
- Volunteer opportunities
- Access to mobile-friendly projects
- Push notification updates
- View publications
- Contribute to scientific discoveries
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The Zooniverse is the world’s largest and most popular platform for people-powered research. This research is made possible by volunteers—hundreds of thousands of people around the world who come together to assist professional researchers. Our goal is to enable research that would not be possible, or practical, otherwise. Zooniverse research results in new discoveries, datasets useful to the wider research community, and many publications. The Zooniverse Mobile App provides push notification updates about our projects, as well as access to our most mobile-friendly projects and publications.
iSeaTree
Identify trees using AI or manual input, calculate their environmental benefits, and share your findings on an interactive map. This free app is designed for users of all ages and skill levels across the USA and Canada.
- AI-powered tree identification
- Manual tree identification
- Tree benefits calculator (CO2, H2O, air quality)
- In-app map for sharing tree data
- Suitable for all ages and skill levels
- Supports USA and Canada
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Description: iSeaTree is a free and intuitive mobile application that helps you identify, record, and calculate tree benefits anywhere in the USA and Canada. Built for all ages and all skill levels, iSeaTree provides both an AI and manual interface for identifying various tree species. iSeaTree also includes a ‘Tree Benefits Calculator’ which helps users calculate the CO2/H2O/and air quality benefits of validated tree entries. Users can also share their tree data on an in-app map - so everyone can enjoy finding and discovering more about their local trees!
Screenshots
Verdict
The clearest difference is rating: iSeaTree at 5.0 against Zooniverse's 3.7. iSeaTree also leads on review sentiment (100% vs 59%) and iOS requirement (10.0 vs 15.1). Zooniverse's advantage is ratings volume (38 vs 7). On price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
iSeaTree holds the better App Store score, 5.0 against 3.7. That said, the two scores are not equally well evidenced: Zooniverse has 38 ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 59% of Zooniverse's written reviews are positive against 100% of iSeaTree's.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 24, 2026 and October 20, 2026 respectively.
| Parameter | Zooniverse | iSeaTree |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (38 ratings) | 5.0 (7 ratings) — better |
| Positive reviews | 58.8% of reviews | 100.0% of reviews — better |
| Number of ratings | 38 — better | 7 |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 10.0 — better |
| Further details — not scored | ||
| Size | 50 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | Zooniverse | DemocracyLab |
Customer experience
Zooniverse
iSeaTree
In-app purchases
Zooniverse
No in-app purchases
iSeaTree
No in-app purchases
