So basically OneAD is a app which is used to earn money by referring to your friend. Its all concept is based on referring. But it is not like that your friend just need to download but he also needs to be active on it, means he need to allow OneAD to run ads on the lockscreen. And honestly speaking it is not the best way to earn money as it takes too much time to earn. As it is difficult to build such a chain of friends, if to do so you will need to beg people to download it.
they give you really very small amount of money for running stupid ads on your screen. You will earn monthly 4 rs per referral from level 1 and rs 2 per referral from level 2. You will earn upto 10 levels.
So basically they show ads on screen and suppose if you try to turn them off then your income from active referral will be reduced by 75%.
They also have a spin and earn offer which is totally crap as they just gives you 1-3 paisa per spin and you can spin only 5 times an hour.
The only thing which is good about OneAD is that they directly transfers the money to your Paytm wallet. It usually takes 5-6 days for the money to transfer.
So I would suggest you to not to waste your time on this site, instead try some another app which is much faster and gives you some good amount.