Vijay Kumar

I'm currently working with React and I would recommend you because it will help you develop both web app and similar to React is Reactive Native which will work mobile devices. And with these frameworks, I will choose Node.js in the backend. In DB, I have experiences with MySql and MongoDB. I think you should go with MongoDB, it will help out with its cloud service also. Happy Coding!😀🤩

In my opinion, you should go with MongoDB and MongoDB Atlas. They will surely scale because you will almost have the full control over the DB and it will help you scale later based on your DB schema designs. This is just my opinion and I don't have any experience with Firebase, but I have heard that it is a lot easier with firebase to implement some functionalities. Have a great day and best of luck!