Web Admin portal for mobile app (native)

Hello! I am currently working on a mobile app project (native iOS and Android) with Laravel as backend. I wanted to create a web admin portal in ROR (since all our systems runs on Ruby). The portal will be the interface of our employees whenever they want to check a transaction from the app, production monitoring, updating pricing, and user management. The portal will read transactions from the app and push updates (instead of directly in the database).

How do I make sure that my mobile app front-end, backend, and ROR admin portal are in sync? Also, how do I connect ROR to the mobile app backend?

I’d appreciate all thoughts on this.