I think for cycling, the Tickr is sufficient. TickrX has a lot of cool features for running (like running cadence).
Here’s a quick rundown. They are both equipped with Bluetooth & ANT+ to connect to your devices. Both use a CR2032 battery and use a snap to connect in the front.
- basic accurate heart rate monitor with easy connectivity.
- if you want more data like…
- for cycling: indoor spin cadence
- for running: vertical oscillation, ground contact time and cadence (I used this feature when I was doing a bit of running and it was cool!)
- counts reps for things like pushups or gym moves (I’ve never used this feature, but it’s on their website) when paired to select apps
- Built-in memory records up to 16 hours of heart rate, calorie burn and workout duration
I have both and basically I use the Tickr for cycling and the Tickr X for running. Hope that helps!
Also, @kbeers81, here’s a bunch of info on HRV: https://www.scienceforsport.com/heart-rate-variability-hrv/