I did figure out there is some sort of spaced repetition component to it, but that’s probably because I’m already an Anki user and aware of the concept.
I quite like the eccentricity of it, although I’m sure it could be toned down a notch for wider appeal.
Feature-wise, having thesaurus definitions immediately accessible is very useful.
I may have gone overboard with the minimalism. Users had been all the more baffled before I added the tooltips hinting to tap the hearts, so I should probably double down on some sort of tutorial.
The Stripe integration launched a few days ago, so the app is very much in the red. Paid advertising since the initial release six months ago has shown promising signs from prospective customers though.