Grams are the crypto currency of gramfree network and by doing simple taks you can earn grams. One of them is free spin/roll which is available after every hour and you can can earn from 0.1 gram to 1000 grams and the other one is videos watching per day you can see upto 5 videos each video gives you 0.1 gram and duration of one video is 1 minute and then you can take smart contracts and last but not the least is reffrels. After completion of 500 grams you can withdraw these grams by using different payment method