How do I cancel my subscription?
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If you subscribed on iPhone or iPad, your subscription is managed by Apple. Open the Settings app on your device, tap your Apple ID at the top, then Subscriptions → Khio Study → Cancel. You'll keep access until the end of the billing period. If you subscribed on the web, go to Khio Study Settings → Subscription → Manage Plan.
How do I restore purchases on a new device?
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Sign into the same Apple ID you used to subscribe, open Khio Study, go to Settings → Subscription, and tap Restore Purchases. Your premium access comes right back.
How do I delete my account?
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Open Khio Study, go to Settings → Account → Delete Account. This permanently erases your study sets, notes, chat history, and profile — it can't be undone. If you have an active App Store subscription, remember to also cancel it in iOS Settings → Apple ID → Subscriptions so Apple stops billing.
What file types can I upload?
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PDFs, PowerPoint (.pptx), plain text, Markdown, images (PNG/JPG), audio recordings, and YouTube links. The AI turns any of these into flashcards, quizzes, study guides, mind maps, podcasts, and an interactive tutor.
The AI got something wrong — is that normal?
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AI study tools are powerful but not perfect. Always double-check critical facts against your source material or a teacher. If you notice a consistent issue, email us with the set name and we'll look into it.
Can I use Khio Study offline?
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You need an internet connection for AI features — generating sets, grading answers, tutor chat. Flashcards you've already created can be reviewed in a limited offline mode, but online is the full experience.
How is my data protected?
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All data is encrypted in transit (HTTPS/TLS). Your study materials are private to your account — we don't share them with other users and never sell your data. See our
Privacy Policy for full details.
I can't sign in — what do I do?
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Try these in order: (1) make sure you're on the latest app version, (2) check your internet connection, (3) if you used Sign in with Apple, sign out of the app, force-close it, and sign back in. If that doesn't work, email
[email protected] with the email or phone number on your account and we'll sort it out.
How do refunds work?
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App Store subscriptions are refunded by Apple, not by us. Go to
reportaproblem.apple.com, sign in, find your Khio Study charge, and request a refund.