Skrilo is one of the many simplest earning app which gives you petty amount by just watching app and some short articles. Sets of 3 ads are given 5 times a day between 8 am to 8 pm every day . Every viewing will give you a chances for a lucky draw , so more chances will have more probabilit to earn rewards which is given into your PayTm wallet. I usually keep getting some or other rewards of Rs 10, 25 and weekly draw amount of Rs 100 or more depending on their critera and chances. They have a monthly draw of Rs 100000 . so it dosent cost me anything to add amount into my Paytm wallet.
Average time spent on the app will be 2 min per set of 3 ads.