249+ iOS apps curated and reviewed
Blood Oxygen | O2 Monitor app+ is the household name in oxygen level tester, but it's far from the only option. We track 249+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 4.6★ (431) | No | Yes | Nov 2026 | |
| 2 |  | Free | 4.6★ (11) | No | No | Oct 2026 | |
| 3 |  | Free | 4.3★ (2K) | Yes | No | Nov 2026 | |
| 4 |  | Free | 4.8★ (242) | Yes | No | Nov 2026 | |
| 5 |  | Free | 4.3★ (723) | No | No | Nov 2026 | |
| 6 |  | Free | 4.4★ (43) | Yes | Yes | Nov 2026 | |
| 7 |  | Free | 4.7★ (6.7K) | Yes | No | Nov 2026 | |
| 8 |  | Free | 2.3★ (3) | No | No | Oct 2026 |
Track your blood oxygen saturation (SpO2) and pulse rate with daily logging and reminders. Syncs with Apple Health and supports Apple Watch for comprehensive health monitoring. Offers multi-profile support for family members.
Calculates remaining oxygen in a cylinder for ambulatory users. Input device, liter flow, and cylinder size for precise remaining hours and minutes. Provides peace of mind for oxygen users on the go.
Easily record your daily pulse and blood oxygen levels. Track your health statistics over time with simple data entry and clear visualizations. Requires an external device like a pulse oximeter or smartwatch for measurements.
