Right now, the filter health is visible on the device only when you connect it to WiFi.
You can view the filter life of the Pre-Filter and Nano-Filter once you connect Molekule to WiFi. When connected to the internet, your Molekule will indicate the remaining health of your filters and inform us to automatically ship new filters to you when your device needs a replacement.
You can view the filter level on the Molekule touch screen or on the app. If you are having trouble downloading the app, please follow the steps here.