Pedometer or fitness tracker

I have a fitbit flex which I bought via WeightWatchers, and have it synced to my WW app, so that it adds activity proppoints.

I have noticed that it is a bit erratic at adding the points though, from posts on a WW group on Facebook it seems as though several people had problems after an update so I'm wondering if that is what is wrong.   I do two gym classes on a Saturday and before the update it was adding between 15 and 21 activity points for that day (depending on how much walking I also did) but the last couple of weeks it has added only 5.   I think the earlier ones were too high, but the more recent ones are too low surely for the amount of exercise from two classes.   Since I rarely need to use the activity points anyway it doesn't really matter but would prefer it to be consistent.   

Having said that I do like the flex, and would consider upgrading to get the heart rate monitor and the ability to add the stairs climbed as that is not on the flex.

i have an account at myfitnesspal, which I used to update regularly before joining  WW, I've only popped on occasionally recently as I've used the WW app to track progress.   I wonder if I can sync with the mfp as well as WW 

On gym days I can easily get over 10,000 steps, my best day was just short of 25,000 - that was Bank Holiday when i went for a long walk.  On non gym days I struggle to get much over 5,000 steps.   Overall for the week though I'm averaging 70,000 steps.

I have the fitbit one and wear it everyday without fail. I used to get upset if I would forget to put it on so now it's in my routine' It syncs straight to my WW app to calculate my activity points and is much more accurate than my old WW pedometer.

The Fitbit One doesn't track cycling, only activities that are step based. But you can input cycle activity based on length of time, distance and pace.