8+ iOS apps curated and reviewed
The best bufferzone apps on iPhone average 1.2★ across 8+ 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 | — | No | No | May 2026 | |
| 3 |  | Free | 1.2★ (6) | No | No | Jul 2026 | |
| 4 |  | Free | — | No | Yes | Sep 2026 | |
| 5 |  | Free | — | No | No | Sep 2026 | |
| 6 |  | Free | — | No | No | May 2026 | |
| 7 |  | Free | — | No | No | May 2026 | |
| 8 |  | $0.29 | — | No | No | Aug 2026 |
This app simplifies pool and hot tub water balancing. Simply photograph your test results and receive clear, actionable instructions for adjusting water chemistry.