A commercial, web-based Spaced repetition memory system along the lines of Quizlet. No significant new ideas as far as I can tell. Heavily focused on shared decks. Seems pretty unserious about the science, or maybe that’s just a distortion created by their marketing team.
Business model is to charge $5/mo to remove some limitations of the free version (uploading images, import/export, remixing others’ cards).
Seems to have the typical problems described in Studying another person’s spaced repetition memory prompts is usually ineffective; e.g. this is, somehow, the primary screenshot for the MCAT deck!
Another bad screenshot from that deck (Spaced repetition memory prompts should unambiguously produce a specific answer)