A friend of mine and I are building an app from the scratch and both of us are in doubt of using the Active Admin gem, which is awesome and we would like to use.
Our app is built on react and an api written using ruby on rails.
We don't know if the best way is to use another rails app using the same database or to not use active admin and use some react tool for it.
Active admin gem provides a good UI and routes to handle all the management. If you want to use active admin with react it would not be very easy as it provides tons of inbuilt functionality. I would suggest using Active admin for the admin management with the rails routes and for the remaining app, you can continue using react UI.
If you want to enhance your UI you can use this gem