It's a low-code solution for customer-facing analytics but is super flexible and extensible with code. Embedding is available in React or Vanilla JS (no iFrames). You can build dashboards programmatically or with the no-code editor.
The backend query engine is also pretty powerful; performant and copes well with complex customer data structures.
We had this problem at one of my previous companies; glad to see someone addressing it, and the open-source approach just makes so much sense. Best of luck