I'm using this with a Pixel 6 Pro. Only the single lead is useful for my cardiologist. He explained the multi-lead function has too much noise to be useful., This application gets downvoted and it is the problem with this service. When trying to send the report to my doctor the software is full of ads attempting to sell additional services from the company. As a result that portion of the software is almost impossible to use with pop-ups and dead ends everywhere.That part of the app seems to be an intentionally incomprehensible maze that tries repeatedly to sell you their doctors' services. If you can find an alternative to this product, do so.