OPA allows anyone to get free products from top brands in India. In exchange, you have to complete a simple task. The task could be filling out a short survey or posting on social media. How it Works: 1. Sign up on OPA app 2. Receive collaborations 3. Accept/Reject the collaboration 4. If you accept, complete the task(s) 5. Collect payment on the OPA app All the details about a collaboration are clearly mentioned in advance so you can accept/reject the collaboration. As you keep completing collaborations, your score increases. A higher score unlocks better collaborations.