One app, all your devices. iPhone and iPad sync through your own private iCloud: cards, decks, review history, settings — and the ping schedule itself, so every device fires the same questions at the same moment. Answer some on one device and the rest on another; badges, banners, and the schedule settle everywhere. Duplicate collections from the pre-sync days merge automatically, keeping the most-practiced copy of every card. No account, no server of ours — your iCloud, your data.
UPLINK on your wrist. A full Apple Watch app: a ping lands on your watch, you tap it, and the question is right there — reveal, Got it or Missed it, next — straight through the batch without touching your phone. On watches with Double Tap (Series 9 / Ultra 2 and later), the pinch gesture reveals and confirms, so a whole batch can be cleared hands-on-the-go. Grades on the wrist are real grades: the same scheduling engine, the same streaks.
Pictures and cramming. Cards gained images — front, back, or notes, from your photos or clipboard, with pinch-to-zoom during review — including picture-only cards (an unlabeled diagram asks, the labeled one answers). Study mode arrived for on-demand cramming: run any deck or category shuffled with a score at the end, without touching the spaced-repetition schedule. Exports grew up too: collections with images export as a zip that carries the pictures along. Plus instant lock-screen cleanup and answered-elsewhere handling.
The transmission begins. Random-time notification quizzing inside your chosen window — you set the days, hours, and gaps; UPLINK decides when to strike and how many questions to send. Streak-based spaced repetition where misses return in minutes and mastery drifts toward years, but no card ever retires. Categories, decks, notes, guaranteed review floors, CSV import/export, and a free 7-day trial with a one-time unlock — no account, no subscription, everything on your device.