Support

Questions, problems, feedback — we're glad to help.

Email us directly: ahoi@sent.com. We usually reply within 2 business days.

Frequently asked

Where are my lab values stored?

Only on your iPhone. Marker has no account and no cloud — delete the app and the data is gone. Keep a device backup if you want to preserve your history.

Do my lab reports leave my phone?

No. Every report is read on-device and never uploaded. Marker has no server that stores your documents.

How do I import a report?

Four ways: open a PDF, use the iOS share sheet from another app, snap a photo of the printout with your camera, or type values in by hand. Marker reads it all on-device.

Why does Marker ask me to review before saving?

Marker reads reports automatically and can make mistakes, so it shows you the extracted values and lets you correct them before anything is saved. It cross-checks each value against the reference range printed on that same report and flags anything it could not read confidently.

Where do the reference ranges come from?

From your own report. Marker only shows a value against the range printed on the same report and never invents or defines its own ranges. That is why a report without a printed range is shown without a range rather than guessed.

How do I unlock Marker Pro, and can I restore it?

The free tier saves one report per calendar month. Marker Pro unlocks unlimited reports as a one-time Lifetime purchase or a yearly subscription with a 3-day free trial. Restore Purchases is at the bottom of Settings and re-grants Pro on a fresh install.

Marker is for informational use only and is not a medical device. It does not provide a diagnosis, medical advice, or treatment recommendations. Always talk to a qualified healthcare professional about your results.