Searching for a headless review system

Hello together, I am searching for SaaS solution, which helps me integrate star reviews (segregated in taste and recipe instructions) and comments into our recipe app. Which also has a backend dashboard where we can moderate the reviews users give within our app. In an ideal case this SaaS has a GraphQl or rest API, which means it is headless. Does someone know a company offering a service like this? Have an amazing day! Niklas