Yep, I've thought something like that: For every month that you use the app to a certain degree (number of viewed profiles, page loads or whatnot) I will give

Yep, I've thought something like that: For every month that you use the app to a certain degree (number of viewed profiles, page loads or whatnot) I will give you back 1/nth (1/12th) of your deposit. If you don't use it enough, then I'll "keep" that month's budget as a subscription payment. The idea is that once you match with someone, you will stop using the app, and the rest of the money will slowly go to me. I am convinced it could be a good model, of course as with everything, there are several things to be solved before making it a sound business.