Symptom Checker App
The right care at the right time

Browser Support

Our app is tested for support for the following browser versions.

Browser TARGET versions
Chrome latest
Firefox latest
Edge 2 most recent major versions
IE 11
IE Mobile 11
Safari 2 most recent major versions
iOS 2 most recent major versions
Android Nougat (7.0)
Marshmallow (6.0)
Lollipop (5.0, 5.1)
KitKat (4.4)

Our symptom checker app targets modern browsers but extends support back to IE 11. Our app uses javascript polyfills to support IE 11. IE 11 support costs ~100kb of javascript and limits css design options. For the year leading up to the release of the app, only 5% of the previous product’s (Web Widget) traffic is from IE and IE 11 makes up 98% of that traffic.