App Showcase: Blood Oxygen App
App info
- App name: Blood Oxygen App
- Onboarding steps: 6
- Paywall type: No Free Trial - Soft Paywall
- Monthly installs: 5,000
- Monthly revenue: $55,000
- App category: medical
What it does
Blood Oxygen App is a health utility that allows users to track their heart rate and get an estimate of their blood oxygen levels. The app's primary feature uses the phone's camera and flash to measure pulse. It then combines this reading with a guided questionnaire about symptoms and breathing patterns to calculate a probable blood oxygen level. Users can log these results, add manual entries, and view their data history in simple charts.
Where it shines
The app's standout feature is its multi-modal measurement process (01:15 - 03:02). By combining a camera-based pulse reading with a detailed questionnaire, it provides a sense of a comprehensive check-up without requiring external hardware. The user interface for logging data is clean and straightforward, whether adding an entry automatically after a test or manually (03:13). Finally, the app clearly presents itself as part of a larger health ecosystem (00:19), offering a sense of a broader value proposition.
UX highlights
- Guided Measurement: The app provides clear instructions during the pulse measurement, telling the user to hold their finger still and showing a live progress circle (01:27), which reduces user error.
- Data Logging: The "My Logs" screen (03:09) presents a clear history of measurements, which can be toggled between oxygen and heart rate, making it easy to spot trends.
- Manual Entry: The interface for adding manual data is quick and efficient, using a large numeric keypad and a simple confirmation button (03:14).
- Editable Logs: Users have full control over their data, with the ability to edit the date, time, and value of any past entry (04:25), which adds a layer of trust and utility.
- Family Profiles: The app supports multiple profiles (04:04), allowing a user to track vitals for family members, a key feature for caregivers.
- Breathing Exercises: Beyond measurement, the app includes value-add features like guided box breathing exercises (04:59), expanding its use case from a simple tracker to a wellness tool.
Monetization & growth
The app introduces a paywall early in the onboarding flow (00:18), functioning as a soft gate. It highlights premium features like dangerous value alerts and smartwatch sync. The primary subscription model appears to be an annual plan, framed with a lower per-week cost to make it more appealing. Premium features are consistently upsold throughout the app, with "Unlock" buttons on charts (03:09) and padlocks on specific settings, creating multiple conversion points. The app also heavily promotes its other applications and a bundled subscription (06:01), a clear strategy to increase lifetime value.
Who it’s for
This app is likely for health-conscious individuals who do not own a dedicated health tracker like an Apple Watch but want a convenient way to monitor their basic vitals. It also serves as a useful digital log for people who use manual devices, like a pulse oximeter, and want a central place to store their history. The family sharing feature makes it suitable for caregivers monitoring the health of relatives.
Notes & opportunities
The distinction between a direct measurement (heart rate) and an estimation (blood oxygen) could be made more explicit to manage user expectations about accuracy. While the onboarding is packed with social proof, introducing the paywall before the user has experienced the core measurement feature (00:18) could lead to a high drop-off rate. A "first measurement is free" approach could be a powerful alternative to demonstrate value before asking for payment.