[Closed] Looking for a heart rate monitor for zone training...

Hi

I've got to the age where just smashing it on the morning and afternoon commute 11miles each way for HIT training is no longer a good thing for my body.

So I am looking at moving towards more structured training using heart rate zones etc.

I'd like a hrm that I could use for this. I have a Bluetooth gem strap from Aldi but unaware of any android apps I could use this with for on the bike. Ideally I'd like cadence too.

Any recommendations out there for good value kit for the above that I can easily transfer between bikes?

Cheers!