Email ai@nrdyn.com and we'll get back to you.
Where is my data? Entirely on your device. Nothing is uploaded anywhere. Use Settings → Export to back it up.
I missed some days — is my streak gone? The schedule adapts automatically, and up to two missed days per month are auto-frozen. Just open the app and continue; catch-up mode shows the most important cards first.
Can I add my own words? Yes — Library → Import lets you bring word lists from an Excel sheet. Download the template inside the app for the exact format.
How does the scheduling work? Reviews are timed by FSRS, an open-source spaced-repetition scheduler, so each word returns right before you'd forget it.
See the privacy policy — the short version: no data is collected, ever.