Hi!
Here is the solution: Complete guide: Redirect users to the page they were before signing up/signing in + onboarding use case
This is the best way for many apps.
Although, note that there is a way more simple thing to do = set the redirection directly inside the sign in block (so all your users will always be redirected to a unique page).
Most of the time it is more adapted to client portals and internal tools, where there is really nothing to see before sign up/ sign in.
You can also user user groups redirection (inside “users” in the left panel in the softr studio)