I can make almost all apps which are usually seen in the top free apps' trends in Play Store.
So, how will I put their ads? Do they give something which involves the use of Android SDK? Or can I give them my apk file so they will incorporate their ads for me? (this doesn't seem safe though).
One solution for this may be that they give me HTML for the ad so I can put it in tasker's HTML box, but then the ad networks won't be sure if their ads are showed properly or I am showing something else over the HTML box.
Also, do I have to pay the ad networks in advance or do they only take the share from the advertisements' earnings?
UPDATE: I have learned how to develop real android apps using java and I have been uploading my apps with the name "Apps By Usman".
I thank everyone for the replies and I want to let everyone know that although I personally do not require an answer to this thread now, anyone who can share information about tasker apps and their monetization should write a reply for those visitors who would be needing such answer.