Q&A
Answers to the most common questions about Hemio.
1. Is Hemio a medical device?2. Does it measure SpO2?3. Do I need an account?4. Where is history stored?5. Why do results vary?6. Does it work offline?7. What permissions are required?8. Can I delete my history?9. Who can access my data?
Is Hemio a medical device?
No. Hemio provides informational estimates and does not replace medical advice.
Does it measure oxygen (SpO2)?
Yes. The app estimates pulse and oxygen (SpO2) using the phone camera.
Do I need an account?
No. The app works without login or registration.
Where is history stored?
Locally on your device. We do not store data in our databases or the cloud.
Why do results vary?
Accuracy depends on finger placement, lighting, camera quality, and hand stability.
Does it work offline?
Yes. Pulse and SpO2 measurements do not require internet.
What permissions are required?
Camera access is required and flash is used where available to improve the signal.
Can I delete my history?
Yes. You can delete local history at any time from the app.
Who can access my data?
Only you. History stays on your device and we cannot access it.