I plan on blogging some detailed numbers soon for all my apps. Here is an example. This app does really well as a free app with ads. I have others that have done better as paid apps.

Sticker Draw Blog post with video http://ideaindustries.net/sticker-draw-for-windows-phone-7/

Marketplace link to free version http://windowsphone.com/s?appid=e80104a9-c243-e011-854c-0023...

I targeted the app at kids in the 2-8 year old range. I started out by making it a paid app priced at 1.29$. I released it early February. My thought was there is so much garbage out there something with a little bit of quality might do ok. It didn't. I also had trouble getting press from any of the wp7 sites. I added a free version using pubcenter ads in March as an experiment. I also put a "buy the full version" link on the menu.

Paid

93 purchases for paid version. It hasn't done well and I haven't seen an uptick from the buy the full version link. I did screw up here. I know some tricks now for getting better numbers for freshly released apps.

Ad Supported

89k impressions since launch 603$ in revenue Avg eCPM is 6.82$ (this is abnormally high but pubcenter does have high eCPMS) I'm getting 600-1000 impressions a day now.

As far as the development tools and process... I work in a shop that does all 3 platforms. I have some experience with Android and even less with iOS but I'm going to say this anyway: Windows Phone has the best platform and tools for mobile development. That may be hard to believe since the platform is so new but Silverlight is great and the tooling is mature.