OPPA is a creator-marketing platform that helps people earn money by making organic social media content featuring products from participating brands. Its model is designed to make campaigns accessible beyond established influencers: creators do not need a large following or extensive experience to take part. OPPA focuses on Instagram and TikTok, where participants can publish short videos, typically 10 to 60 seconds, and may share the same content on both platforms so views from each can count toward their results.

A campaign starts with a product package supplied free of charge, including delivery. Creators make content in their own style rather than following a supplied script, while OPPA handles communication with the brand and keeps formalities to a minimum. Participants can post multiple videos, with campaigns often setting a target of at least 10 posts within 30 days. Earnings are updated during the campaign and are paid within a maximum of 24 hours after it ends.