Yes! You will be able to calibrate and set up doppel through your computer using bluetooth or via a USB cable.
No. We looked in to making an app for other devices but they don't currently have the actuator or battery capability. Basically it would not feel right and would run out of battery before you had a chance to check your emails!
Yes. Turn the dial all the way down and doppel will go to sleep.
We have found that people like to use doppel as-and-when they need it and turning it off between times. But you can use doppel whichever way suits you best.
Yes! You can set the tempo to a huge number of different BPMs for a silent metronome.
No. We take your resting heart rate through the app on your phone and then set suggested rates from that baseline. No need to monitor.
Don't see the answer to your question? Ask the project creator directly.