For several years I have been wearing a Fitbit of one sort or another. Currently I have a One clipped to my bra, measuring various activity parameters. I love my One and the Fitbit dashboard, enough that when my scale went bad I bought the Aria wifi scale. Having my weight and activity data in the same database has been interesting and helpful.
Earlier this year I found out that my blood pressure was sky high. Fitbit does not make a blood pressure cuff, nor do any on the market automatically record to their dashboard. It has a place to record blood pressure, but I would have to manually enter it. I explored a couple of "fitness dashboards" that said they could accomplish this feat, but none worked.
When Apple announced the Health module in iOS8, it thrilled me. Given the popularity of Apple and Fitbit, I assumed that my problem had been solved. Then Fitbit announced that they would not pursue Health integration for now, and Apple will no longer be selling Fitbit devices.
Like it or not, a single health dashboard that can collect information automatically will give people the best information to track their health habits and results. Manual entry can be performed, but really should be unacceptable in this day and age. Also, there are other devices out there that could be linked up (CPAP machines, etc).
If these corporations were really people, we could put them in "time-out" or "peace chairs*" until they work this out. Unfortunately, disciplining and/or modulating behavior of corporations is proof that they are not really people (is the Supreme Court paying attention to this blog?).
* "Peace chairs" came to our attention when our daughter was in first or second grade. Children with disagreements were to sit side-by-side in these chairs and work out their differences with words. This concept did not really get our attention until the day that another child would not do the "peace chair" thing with our daughter. She wielded a pair of safety scissors and told him to get in the "peace chairs" or she would cut him. This led to an interesting discussion with her teacher. Thus, I really do not have any data to support the use of "peace chairs" in practice.