My question is, you say, there are 2 lists for the free users.
What exactly are "lists" in your app?
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On a different note, I always long for an app that is designed for the solo user for personal needs only.
Most people, including myself, have to use for work what their org uses for task management.
But an app designed specifically for solo users would be great. No need for collab tools or messaging, just simple one-user workflow across multiple devices with free sync.
I would pay $10/$20/$30 one-time for it. It would be so great.
I would like to track here what languages/libraries I am going to learn next, to what movie I want to watch to books that I would want to read.