I do my best to attribute OpenStreetmap in my mobile app, one thing that is bothering me, however, is the requirement to make the logo clickable and it opens a webbrowser.

There is a big jump in showing a logo to adding special code for every operating system it runs on to open a webbrower.

tl;dr: Adding “openstreetmap” text; 10minutes. Making it clickable and open in browser; 10 hours.