As simple as it sounds, to participate in this free lottery watch an ad or more on your device and automatically enter a lottery in which if you win, you will get half of this app's advertising revenue at the end of the month. The lottery made each month. If you win you will receive an email and you will get your money when we get paid by Google. You will know how much you won at the end of the month. Thanks for your participation and good luck! One fourth of the ad revenue will be given to charity to UNICEF.