Should I create my own backend?

Firebase is a good choice if you plan to either write a brand-new application or rewrite an existing one from scratch . Additionally, firebase helps in the easy storing and retrieval of dynamic content. If you decide to develop the application without any form of custom coding the backend, firebase makes this easy.1 Nis 2019

If you need to achieve a proof of concept with minimal resources, then Firebase is a good choice because it’s free for a number of users and is preferable for the beginning . You may control the system and make changes while adapting the market, and later it may be easily converted into a customized backend.

You can use firebase to skip backend programming, or even user firebase to setup a nodejs backend (functions) . The bad thing about not using a backend is security, you would need to master firebase security rules to completely protect data.

Conclusion: Unless your app is very data intensive then you won’t meet any of the data caps. Firebase will help you get your app online quickly and cheaply before scaling excellently once the users start pushing the upper limits. NOTE: I would never recommend someone building their own backend when starting a new app.