I worked at startups (like, really really early stage Mickey Mouse ones, nothing serious) that used Firebase and Amplify. I think the toolchain for Amplify is n

I worked at startups (like, really really early stage Mickey Mouse ones, nothing serious) that used Firebase and Amplify. I think the toolchain for Amplify is nicer, but more dials means more mistakes can be made by juniors. Firebase's API is pretty clunky in my experience, and the docs aren't the best, but if you're building a something more in line with a CRUD app I don't think there's too much friction. That said I'd probably pick AWS because I like DynamoDB better than Firebase's Realtime DB or Firestore, and the managed backend is pretty easily understood. Maybe if analytics are important than Firebase has better integration there, but you could always just handle that externally on the app itself.