I got my Digifit connect 2 on Amazon and the Garmin chest strap there also. You can get Digifit for ipad and ipod touches also. You have to download the Digifit software onto your hardware and you need to upgrade from the free version. I chose the iCardio version of the Digifit software and I downloaded it from iTunes once I had the Digifit connect 2 and the chest strap. Digifit has a website with lots of info but I found Amazon had it cheaper!
I HIGHLY recommend anyone with POTS with Ehlers use this on everyone in their family to see if anyone has undiagnosed POTS AND to help manage their own symptoms.
I found out my 13 year old son has POTS using the Digifit and the cardiologist confirmed it is POTS! Luckily his P waves being inverted are a benign variant on him. On the sonogram, his valves looked good and the cardiologist found no dilations. Heart is good! PHEW! She referred us to a neurologist and a genetic specialist for his sister who has the worst EDS symptoms. The specialist will be coming to our state so we won’t have to travel. YEAH!