Hi @Rakwa measuring BP is different from measuring the heart rate. There isn't a device or an app other than a real blood pressure monitor that can measure your BP.
There are currently some watches being sold on Amazon that claim to be able to measure blood glucose, blood pressure and oxygenation levels in addition to measure the usual exercise related parameters
Best Answer@Rakwaunless such claims are proven to be true and are the same as the standard blood pressure cuff method, you can't trust the readings would be accurate.
@Odyssey13 this can be said also for heart rate but this didn't stop Fitbit to make Sense series that is very unreliable to measure it.