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★ (423) | No | Yes | Aug 2026 |
| 2 |  | Free | 3.9★ (190) | No | Yes | Jul 2026 |
| 3 |  | Free | 4.1★ (471) | Yes | Yes | Jul 2026 |
| 4 |  | Free | 4.5★ (8) | No | No | May 2026 |
| 5 |  | Free | 4.3★ (2K) | Yes | No | Aug 2026 |
| 6 |  | Free | 4.5★ (466) | No | Yes | Jul 2026 |
| 7 |  | Free | — | No | No | May 2026 |
| 8 |  | $0.99 | 4.4★ (40) | No | No | Aug 2026 |
Track your blood oxygen saturation (SpO2) and pulse rate daily. Log readings from your oximeter, monitor your normal range, and stay informed about your health. Features include a log diary, multi-profile support, and Apple Health synchronization.
Track your blood oxygen saturation levels and monitor changes over time. Log additional symptoms to gain a more comprehensive understanding of your condition. Supports multiple user profiles and synchronizes with HealthKit for pulse and oxygen data.
Easily track and monitor your blood oxygen levels and heart rate with a modern, user-friendly interface. Log your measurements, access recent data, and export your records for personal tracking.
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.
Monitor and record your blood oxygen saturation (SpO2) levels with this personal health tracking app. It offers detailed analytics, daily wellness guides, and data export options. Sync your health data with Apple Health for a comprehensive overview.
This utility app transforms your iPhone into a precise spirit level. It offers calibration for accuracy, and supports horizontal, vertical, and angled measurements up to 45 degrees.
This application transforms your iPhone into a precise digital level and angle measurement tool. It offers high accuracy for various tasks, including surface leveling, angle conversion, and even includes a ruler for actual size measurements.
Monitor your portable oxygen concentrator's battery life, settings, and receive important updates. Access helpful videos and troubleshooting information 24/7, all from your mobile device.
This app helps you manage your health by tracking heart rate, blood sugar, blood pressure, and blood oxygen levels. It provides daily data insights, charts, and health tips to empower informed decisions about your well-being.
This utility app provides a precise and user-friendly digital level. Its design prioritizes simplicity and accuracy for various measurement needs.
Track your blood oxygen saturation (SpO₂) with smart alerts and historical data. Understand your overall wellness and make informed health decisions with detailed charts and insights on your iPhone and Apple Watch.
This utility app functions as a digital spirit level. It helps users determine horizontal and vertical alignment for various tasks, such as hanging frames or installing TVs. The app provides precise measurements for circular, X-axis, and Y-axis tilts.
Easily monitor your blood oxygen levels with real-time data and clear charts. Track daily averages and wellness trends, with instant syncing from HealthKit to your Apple Watch. Your health data remains private and secure on your device.
This high-definition bubble level app provides precise measurements for effortless leveling tasks. It brings traditional leveling tools into the modern age with accuracy and simplicity, making it easy to straighten picture frames, shelves, and more.
This application helps medical professionals and supply chain managers calculate total oxygen demand for various medical devices. It supports different oxygen sources like cylinders, liquid oxygen, and concentrators, aiding in efficient supply management for hospitals and individual users.
Monitor blood oxygen, respiratory rate, and symptoms with this respiratory health app. It syncs with Apple Health, provides detailed historical data, and offers insights into breathing patterns and environmental factors.
