I have been using MyNetDiary since Fitbit removed custom trackers in 2015. I mainly chose MyNetDiary over the others because your custom trackers most closely matched the ones Fitbit removed. A while back, you replaced dailyTracking.do URL with the abomination that is health.do on the menu, but at least dailyTracking.do was still reachable directly. I told you at the time that the new page's awkward interface made it very time-consuming to use. As of this morning the dailyTracking.do URL redirects you to the health.do page.
As a web developer with over 30 years of experience, I do not use the term "abomination" lightly. In this case, I refer to:
The rather random order of the trackers on the page makes it harder to find the one you want to add an entry to. A later update inflicted this loss of order on dailyTracking.do as well, though you do seem to be able to order trackers within groups now. This still requires you to switch between groups for some values, such as your "custom" values and grouped values like blood pressure, so it's still not as convenient as the original interface. Even hiding trackers from view is more complicated now. Instead of clicking an item icon in the list, you are taken to a page that requires you to switch an option and click save, making the process of hiding unneeded trackers included by default tedious, adding two unnecessary clicks to every item changed.
But the larger issues are with the entry interface.
The dailyTracking.do entry interface appeared on the page so you kept your place on the tracker list. health.do opens a new page. Not a usability issue as such but a step backward in web page evolution.
Unlike the old entry form, the new entry page opens with focus on the tab linked to health.do instead of the value field requiring multiple tabs or mousing to the field.
Unlike the old entry form, the new entry page requires clicking a save link to save the entry. In the old form, you could just hit enter in the value or time fields to save the entry.
Unlike the old entry form, the time entry on the new entry page is very awkward. In the old interface, you would just enter the time, and it would validate on save. The new interface tries to format the value as you type digits, which requires a leading 0 for most. Getting a digit off and getting it back on track is a chore.
Optionally, you can pop up a wheel interface by clicking on the "calendar" icon.
Then there are the labels. They have never had any sort of order. You would think they would at least default to alphabetical.
Unlike the old entry form, the label search is now case sensitive. Why?
So it's back to looking at alternatives or setting aside a lot more time to log trackers and medications. Or maybe I can create an agent to log them for me.
