Which smartphone you use? iOS or Android?

We are building an app for developers and founders to remove their stress with simple social tasks. And we are confused, to which platform should we build first.

Already have a Google play developer account, but need to take one from Apple which will cost us $100.

So just confused, is it okay to go with android alone for the MVP. Can you please suggest?

In the US most people have an iPhone, in Europe Android is much more popular, so it really depends where is your target audience.