250+ iOS apps curated and reviewed
The best harm reduction sisters apps on iPhone average 4.4★ 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 | May 2026 | |
| 2 |  | Free | 3.7★ (6) | No | No | Sep 2026 | |
| 3 |  | Free | 4.6★ (504) | Yes | No | Oct 2026 | |
| 4 |  | Free | 4.7★ (951) | No | No | Oct 2026 | |
| 5 |  | Free | 4.2★ (25) | No | No | Sep 2026 | |
| 6 |  | Free | 4.8★ (150K) | Yes | No | Oct 2026 | |
| 7 |  | Free | 4.9★ (4.7K) | No | No | Oct 2026 | |
| 8 |  | Free | 5.0★ (11) | No | No | Oct 2026 |
This AI-powered app offers immediate guidance for substance testing, featuring a database of reaction videos and advice on kit usage. It aims to make substance testing accessible and easy with expert-backed information.
This app offers a free sober tracker and tools to reduce alcohol and drug use. For those seeking to quit, it provides a comprehensive, insurance-covered outpatient treatment program with licensed counselors and medication support.
