I'd say I put in about 10 hrs/week => 520/yr.
Last year my revenues were up 400% (to $88) with expenses of about $400 (apple developer fee, web host, test device, couple of books) - so a loss of about $300.
Time/revenue = 88/520 = $0.17/hr
I'm in the same ballpark of time and losses. I'm selling a WebRTC-based video chat solution (pretty much vanilla at the moment), which we wanted to turn into a bigger platform.
Earnings should be a bit higher though (they're going to be $ 500 / year if I keep the customers because it's a SAAS model), but they come nowhere close to covering the time invested - and I still have a LOT of basic stuff to implement.
Let's say Time/Revenue: 500/600 = $0.83/hr
I've been working on upgrading the technology and business model. It's a risk and I think I'll fail...
I'm not counting with time spent maintaining the game, but it should come to about 2~4h/week in the last year or so.
So that is 136hr/y.
Revenue for the past 12 months is £26,500
26500/136 = £195ph