RectoVerso: Flashcards that unfold.

Hi, I'm Simon. I'm a designer and developer, and I teach at an engineering school in Switzerland. In college I used flashcards to study vocabulary, and I always found the granular self-grading arbitrary and irritating, even if it fed the spaced repetition algorithm nicely. So RectoVerso asks you nothing. You open the iPhone Duo on a question, or slide the answer up on any other iPhone, and the answer arrives a little at a time: letter by letter, term by term, line by line. You stop as soon as you know it. The whole answer then shows so you can check yourself, and how much you'd revealed is what FSRS-6 schedules the card from. There is no Again, Hard, Good or Easy. That's the whole trick. The rest is what you'd expect from a serious flashcard app: your Anki decks as they are, with their math, code, furigana, tone colors and image occlusion, and export back. Cards drafted on the phone from a text by Apple Intelligence, on the device. VoiceOver reads every card. No account, no tracking, no server: backups go to your own iCloud Drive. The reveal rests on research about accumulating cues (Finley and colleagues, 2011), and choosing a rating from it is our own idea, not yet tested in a study. The research page says what's proven and what isn't: rectoverso.code-think.com/research Out today, the day iPhone Duo ships. US$12.99 until November 2, then US$17.99, paid once. I'm around all day for questions.