I am not sure what the threshold is to qualify as 'enough interest', but it would have to be significantly higher than the amount of inquiries that we currently receive. I wish I could give you a better answer but that is kind of where we are at right now.
It would be great if you could consider adding support for Windows phones. I do use your application and golf pads on my Android phone. I love your application and would hate to leave it, but what other choice I would have in case of change of phone OS to Win10?
You have stated that in case of enough interest from users you would consider this version. How much is "enough interest"?
Unfortunately, we do not have immediate plans to offer the application for Windows phones. If we get enough interest from users for this version it is certainly something we will look into.