Plus42 Pricing and documentation

[crun]

I think it would be a mistake to make it cheaper.
WHAT $10 It's twice $5, why if it was $5 I'd say
WHAT!!! that's twice** $2
and so on. There is no such thing as cheap enough if I don't feel like paying.

**Well they are here because they need a calculator
As an aside, I can't get it as my phone doesn't use Play store.

As another aside, I am much happier to buy software when I can just get a no-questions asked refund. (no idea how Play store works these days)
And yet another is that you should have a Donate menu item on Free42.
Free42 should have a try and buy Plus42 menu item.

If you don't ask, you won't get.

My free software does track cumulative run time and number of starts. After a while I gently nag about donating, and I will do that once a year. You don't need to be a dick about it, but you should ask for donations in the app, especially from regular users, and make it easy to do.
I would ask regular users of Plus42 for a donation once a year to help ongoing development - they are the group most likely to keep supporting you because they paid once.

1% of users is pretty good I suspect. I was at .1% of users making a donation in an application with 5 million downloads