I tend to prefer purchasing Apps rather than using free ones to avoid the adverts which I find annoying, and feel that the anywhere up to US$3 on a phone or US$10 on a tablet (depending on the quality and size and type of App) is a small price to pay for this convenience, certainly a lot cheaper than the cost of programs on PC's but then of course the Apps do not have anywhere near the complexity of flexibility of PC software. (When I refer to PC I am using it generically which should also include the Apple Mac's but not Tablets).
Love is better than anger. Hope is better than fear. Optimism is better than despair. So let us be loving, hopeful, and optimistic. And we will change the world. - Jack Layton (1950-2011)
Blackberry PlayBook 64GB Nokia 1020, Microsoft Surface PRO 2