Apps which version?

[newtoapps]

I am new to mobile app development. I have an app idea- I did some research and found out that the market share in 2014 has Android Jelly bean(4.1.x and 4.2.x) and Kitkat(4.4) leading. Should I begin with Android Jelly bean development as per this report ? Android devices distribution platform versions 2014 | Statistic
This will help me reachout to maximum no. of people with smart phones.
Tell me if I am thinking in the right direction or not...

I have worked on web apps development using perl etc. earlier.. but never got into mobile side of things. How should I go about hiring developers?

Thanks in advance

 

[Unforgiven]

I moved this to the development area to get better visibility for other developers.

Most apps created for Android Froyo (2.2?) and up still work on all the newer versions of Android. At least that is my perspective as a user. Hopefully a developer will chime in about if there are a lot of under the hood changes that need to be made.

 

[newtoapps]

Is there an android app code base available for free which will allow less time to be spent on developing the app?