# Frak > Frak lets merchants and developers add a rewarded referral program to a store or app: customers share a personal link, and when a friend buys, both the sharer and the friend earn real cash. Docs cover the Shopify app, WordPress and PrestaShop plugins, and the JavaScript, React, iOS and Android SDKs. Frak is the platform for the Recommendation Economy: brands pay a 20% commission on campaign budget, only on confirmed sales, with no subscription or setup fee. Consumers use the free Frak app to track their rewards and withdraw them to a bank account. ## Documentation Sets - [Abridged documentation](https://docs.frak.id/llms-small.txt): a compact version of the documentation for Frak, with non-essential content removed - [Complete documentation](https://docs.frak.id/llms-full.txt): the full documentation for Frak ## Notes - The complete documentation includes all content from the official documentation - The content is automatically generated from the same source as the official documentation ## Optional - [Frak (marketing site)](https://frak.id): Positioning, pricing and comparisons for brands. - [Business dashboard](https://business.frak.id/): Manage campaigns, rewards and payouts.