Hey I know I'm late but I'l answer so maybe you can see it. Anyways freemyapps is a very good CPA mobile network. it gives you 200 points ($0.60) for every person you get to download and install at least 1 free app.
What I did and you can repeat :
Sign up to freemyapps from your phone : goo.gl/GVomcj (yeah you can look it up if you want and not use my ref/aff link

)
Go to the share tab (in the ad ) and grab your link
Make a bing campaign. Use the keywords : featurepoints , target to only the usa, and make the ad copy say something like :
"download free sponsored apps, get rewarded - gift cards,prepaid visas..." with your freemyapps url.
If your like me you should basically be able to multiply the click costs by 10. ( which should be about $0.06/click)
I'm telling you this cause freemyapps screwed me over as I don't have any sponsored apps available where I live (Europe) and it locked me out because of the at-least 1 app in 60 days policy.
Haha. I had about $8 and now they're gone. Good luck man