I just discovered an app called mCent that gives you free mobile airtime for trying apps on your phone. Give it a try: https://mcent.com/app/?mcode=3TVWBM&tcx=WAPP click here

Get Upto Rs 100 Free Recharge / Refer + ( Rs 100+ for downloading 

This recharge app offers user an easy, mobile friendly and simple way of Recharging Mobiles. Moreover they also provides discounts on shopping, watching videos. If this is not enough for you then you can invite or refer your friends or relatives to this amazing app. Earn Talktime is offering Rs 100 per referral, this is limited time offer valid till 15 june 2015. Earn Talktime is one of the best free recharge app they give free recharge for trying android apps & for referring your friends to earn talktime, they never cheat with us some of the fake apps are available in google play which not give full free recharge, but earn talktime apps is best, how to use? Just follow My Steps below:- How To Earn Money using Earn Talktime:- Steps:- 1) Firstly download Earn Talktime app here The Earn Talktime app gives you free recharges for downloading new apps. Now start earning Unlimited Talktime daily. http://7398527.earntalktime.com 2) Open the app and enter your mobile number ( which you use in your mobile device ). 3) They will verify automatically to your mobile number. 4) once you enter in earn talktime app download the apps & referring your friends to get free recharge 5) They Give Upto Rs 100 per referral # Rs 20 when your friends register on earn talktime app # Rs 80 when your Friends earn Rs 160 or More.