Kardio Support

Need help or found a bug? We reply personally, usually within 24–48 hours.

Frequently asked questions

Is Kardio free?

Yes. Every feature — AI card generation, spaced repetition, past-paper import and public decks — is free to use.

What can I upload to make cards?

PDF and Word (DOCX) files, pasted text, or a web link. The AI reads your material and writes question-and-answer cards, which you can edit before saving. A scanned past paper works too — the pages are read as images.

How does spaced repetition work?

After you answer a card you grade it Again, Hard, Good or Easy. Kardio uses that to decide when to show the card next — soon if it was hard, much later if it was easy — so you review each card just before you would forget it. Cards that are due appear on your Home screen every day.

Can I use Kardio on more than one device?

Yes. Your decks and progress are saved to the cloud and sync automatically. Sign in with the same account on your iPhone, iPad or in the web app and everything is there. Kardio also works offline — changes upload the next time you are online.

I forgot my password

On the sign-in screen tap Forgot password? and we will email you a reset link. Check your spam folder if it does not arrive within a few minutes.

The AI wrote a wrong or odd card

AI cards are suggestions: edit or delete any card before you save the deck, and use the thumbs-up / thumbs-down on each card so we can improve the results. There is a fair daily limit on generations; it resets each day.

How do I make a deck public or private?

Open the deck and use the Public switch. Public decks appear in Explore, where other people can copy and rate them. Switching a deck back to private hides it, but copies people already made are theirs to keep.

Reporting a deck, review or user

Open the deck (or the person's profile) and tap the ⋯ button, then Report. Pick a reason and, if you like, add a note. Reports are private and looked at by a person. You can also Block a user from the same menu — their decks disappear from Explore for you, and they are not told. Manage your blocked list in Settings → Blocked users.

How do I delete my account?

In the app: Settings → Delete Account. Your account and data are removed immediately. If you cannot sign in, email us and we will delete it within 7 days. Step-by-step instructions: Delete your account.

Can I get a copy of my data?

Yes — email us from the address on your account and we will send you an export of your decks, cards and progress.

Report a bug

Email coopj1978@gmail.com with:

• what you were trying to do,
• what happened instead,
• your device and iOS version (or browser, on the web),
• a screenshot if you can.

Privacy and terms

Read our Privacy Policy and Terms of Service.