Banglesjs 2 Circles Clock app

Am using Circles Clock in Banglesjs 2 & am not sure which HRM app will display on the Heartbeat section of the clock app ... Failing memory recall a heart @ the bottom of the circle but now a 'beat' pattern is there ... Don't recall how I originally set up the Heartbeat settings ... Used to record HB every time I activated watch with tap ... Kinda confused (as some of us septuaganarians can get when it comes to the 'new, fangled' stuff) ... Which HRM app should I B using & what should I B seeing on my watch ?

Thanks ... Like the possibility of 'twiddling' with the watch when I get back up to speed on my coding ... It's been in the last century (1980's) since I did any coding creation ... Things R a little rusty !

Thanks again.
Weldon