Propeller works best with accurate data from both a reliever and a preventer medication.
Most people are prescribed one inhaler for reliever use. If you have a few (for example, if you keep one at the office, one at home) then two sensors might work best for you. Sensors can be switched from one medication to another, so if you have just switched from one brand to another, but don’t take them at the same time, you’ll just need one sensor.
The same goes for preventer medications – most people have one. If you’ve got multiple different types (Diskus and Respimat, for example), we would recommend putting sensors on all of the ones you take regularly.
Keep in mind that the Propeller sensors attempt to sync with your phone every few hours, so if your back-up inhaler(s) aren’t nearby frequently, we might start to hassle you about not hearing from that sensor.
If you’re still not sure, get in touch with us. We can help you figure out how many sensors you’ll need.