250+ iOS apps curated and reviewed
The best osi olfactory stress index apps on iPhone average 3.8★ across 250+ titles — we've ranked them by what real users actually keep on their phones. Updated October 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | — | No | No | Aug 2026 | |
| 2 |  | Free | 4.8★ (5) | No | No | Oct 2026 | |
| 3 |  | Free | 3.8★ (8) | No | No | Aug 2026 | |
| 4 |  | Free | 5.0★ (2) | No | Yes | Oct 2026 | |
| 5 |  | Free | 4.6★ (42K) | No | No | Oct 2026 | |
| 6 |  | Free | — | No | No | Jun 2026 | |
| 7 |  | Free | 1.6★ (5) | No | No | Oct 2026 | |
| 8 |  | Free | 4.8★ (23K) | No | No | Oct 2026 |
This app provides personalized weather forecasts for your dog, considering their breed, age, and health. It helps you determine safe times and conditions for walks by analyzing air and ground temperatures, as well as weather events.
This app allows residents across the United States to report and track pollution odors in their local areas. Visualize smell reports on a map to identify odor hotspots and understand potential links to air quality issues.
