This is pretty new news but any thoughts on this?
http://daringfireball.net/2016/06/the_new_app_store
Maybe a subscription model would work better for an app like Marvin. I know some people will hate it but I'd much rather have a supported app than a few extra dollars every year. It also seems like this would allow for a free trial, rather than a free tier and that'd be a better way for users to experience the app to see if they wanted to buy in.