Discover and explore sustainable locations and local initiatives. Contribute to mapping projects through campaigns and engage with communities. Use anonymously or with an existing account.






250+ iOS apps & games curated and reviewed
Finding the right giscollective apps and games can be overwhelming with so many options. We've analyzed 250+ apps and games to bring you the best choices for 2026, from free options to premium solutions with advanced features.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | Free | 5.0★ (1) | No | No | May 2026 | ||
| 2 | Free | — | No | No | Oct 2026 | ||
| 3 | Free | 5.0★ (3) | No | No | May 2026 | ||
| 4 | Free | 3.9★ (482) | No | No | Oct 2026 | ||
| 5 | Free | 1.7★ (3) | No | Yes | Nov 2026 | ||
| 6 | Free | 4.5★ (11) | No | No | Oct 2026 | ||
| 7 | Free | 4.6★ (14) | No | Yes | Oct 2026 | ||
| 8 | Free | 4.1★ (11) | No | Yes | Oct 2026 |






Discover and explore sustainable locations and local initiatives. Contribute to mapping projects through campaigns and engage with communities. Use anonymously or with an existing account.










This app helps educators, students, and researchers monitor water quality. It assists with calculating streamflow, collecting water chemistry samples, and identifying biological indicators. Location, date, and time are automatically logged.