The best alternatives to Super Thinking are untools, Mental Models, and Notionery. If these 3 options don't work for you, we've listed a few more alternatives below.
Mental Models: this is an attempt to make powerful thinking tools available to anyone. 💜 Discover popular mental models, practice applying them, and use them to think through everyday problems.
Notionery is curated marketplace of over 200 free and premium Notion templates to help startups, freelancers, students, and everyone in between get the most out of Notion.
It's amazing that there isn't an exclusive app for the Mental Model when people are talking about it so much, so I‘ve made one first. Please just open it with Chrome and add the app to the homepage.