Retool is focused more on visual builders and requires more configurations/code to set everything up via custom dashboards.

Motor Admin has a simple unified Admin UI without the need of actually building the UIs unlike in Retool WYSIWYG.

The versatility of Motor Admin can be achieved via in-app UI configurations, custom forms, reports, and dashboards.

Btw, here is a short demo: https://www.youtube.com/watch?v=ZD4Six8ZEP8

Also, Motor Admin has a simple self-hosted deployment option.