If your heart rate is averaging 230bpm, you don't need a phone to tell if it's beating fast. That's nearly 4 times per second, and the feeling is unmistakable. I know, I've been there. If it doesn't slow, I'd find the nearest hospital and park the truck somewhere and get treatment. It could be a number of things, but odds are it's SVT. A few hours of this, and you should seek treatment at the nearest hospital.
I would but I'm driving OR to SC. When I get to SC if I still have the problem I'll talk to someone there. Sometimes I get a 50-60 bpm probably bad reading.
perhaps you should check with your doctor. he/she could do some testing and be able to provide you with relief and some answers for your concerns.
That is a very fast heart rate. I would urge you to check with your doctor.
Good Luck to you.
Is there a way to edit my post? The phone I'm using has a built-in heart rate monitor it's pretty accurate I tested it with the one at the hospital it was one or two beats off. It's the galaxy s5 if it's worth less please do laugh at me.