Have a question, bug report, or feature idea? Reach out — we reply within 24 hours.
Thanks for reaching out. We'll get back to you within 24 hours.
We typically respond within 24 hours on business days.
Please include your device model and iOS/Android version when reporting bugs — it helps us fix them faster.
Yes! Vocab Doctor is free to download and use. A Pro upgrade is available for unlimited AI enrichment, advanced analytics, and priority support.
Vocab Doctor supports 50+ languages including Spanish, French, German, Japanese, Arabic, Chinese, Korean, Portuguese, and many more. The AI enrichment works in all supported languages.
Yes! You can share any list with classmates or study partners. They'll be able to study your list and even add their own notes and enrichment.
We use the SM-2 algorithm to schedule reviews at optimal intervals. After each card, you rate how well you remembered it (Hard / Good / Easy), and the algorithm adjusts when you'll see that card next — reviewing it just before you'd forget it.
Yes! Your vocabulary lists, progress, and streaks sync seamlessly across all your devices via secure cloud sync — available on both iOS and Android.