Changelog

Study Mode, rebuilt

The rating buttons are gone. Answer a question and the spaced-repetition engine grades it from whether you were right and how quickly — then schedules your next review on its own. Sessions now come in three shapes: Quick 5 for a spare minute, Standard for a full sit-down, and Due only when you just want to clear your reviews.

The question banks nearly tripled: 146 → 423 questions across all five levels, every one independently checked before shipping. AP/IB exam prep grew from 15 questions to 111. College General Chemistry gained a new Intermolecular Forces unit with a full lesson companion.

And Study Mode finally uses the periodic table itself: some cards now ask you to tap where an element lives instead of picking from a list. Cards no longer hint at their own answers, and each session spreads across ~15 different elements instead of drilling one at a time.