Taskbucks app is same as concept on MCent both give credit when you install apps and when they verify that you have install that app by their give procedure then you will get paid 10 or 20 rs.
But you will get many options like reading Installing apps and other option for earning money and all money can be transfer into paytm cash also.
Task bucks is just time taking ap and they don't give money to their User. I have install many apps and with proper followed procedures but yet they never given credit. I have mail them they simply says may be you have install that app before and Bal bla.
You are are spending time to install useless app and once you install it they just don't give you credits all you need to spend lots of time and data.
If you are free and you don't have any work to do you can install task bucks and waste your time as well as your data. Each of app which you never install on your phone once you install it through give process they never credit money to your account.
