the reason for dumping WP for Android?

The fact is that, the focus on one app that follows a person while walking and running, is not what the huge majority of people, and I do mean the vast majority of consumers, are going to base their decisions on.

A real and better comparison would entail a bigger set of the most used apps, and the comparison should include availability and features of each app, performance on the different smartphones, and actual usage. At the end, I'm pretty sure that, availability of 500,000 apps for iOS, or 400,000 for Android, might end up irrelevant, because, the vast majority of what people need and use would be nicely covered by perhaps around 10,000 apps or less in each platform. The number of apps now available is overkill, especially with a lot of duplicates and a lot of useless apps. The number of apps as a feature is seriously exaggerated.