Frequently Asked Questions

How to use PurpleSensor and how to read what it produces.

Getting started

What file do I upload?

Export your CGM data from your device's companion app and upload that file here. For Dexcom users, that's a Clarity CSV export. For Tandem pump users, a t:connect Daily Timeline CSV. For Sugarmate users, the Excel export.

How do I export from Dexcom Clarity?

Content coming soon.

Is my data private?

Yes. Your file is processed and deleted immediately after your report is generated. No glucose readings are stored anywhere. See the Privacy page for the full details.

Reading your report

What is a cluster?

Content coming soon.

What do the colors mean?

Content coming soon.

What is a post-cluster hypoglycemic event?

Content coming soon.

What should I do if my sensor shows a lot of clusters?

Content coming soon.

About the algorithm

How does the detection algorithm work?

Content coming soon. The source code is available on GitHub for anyone who wants to inspect it.

Is this a medical device?

No. PurpleSensor is an analytical tool for understanding sensor data, not a diagnostic or treatment tool. Nothing on this site should be used to make medical decisions. Talk to your doctor about your CGM data.