Terms of Service

Last updated: 19 June 2026

These terms govern your use of Erudia (the "Service") at erudia.org. By creating an account or using the Service, you agree to them.

1. Eligibility & accounts

You must be at least 13 years old to use Erudia. You must provide an accurate email to create an account and are responsible for activity under it; keep your password secure. If you are under 18, please use Erudia with a parent or guardian's awareness.

2. The Service

Erudia provides interactive mathematics lessons and a spaced-repetition review system. We may add, change, or remove features as the product evolves.

3. Acceptable use

Don't misuse the Service: no attempting to break, overload, or reverse-engineer it; no scraping; no using it to harm others or break the law; no sharing your account to circumvent limits.

4. Subscriptions, billing & cancellation

Erudia offers an optional Premium subscription at $7.99 per month. Key terms, which are also shown before you pay:

Auto-renewal. Your subscription automatically renews each month at $7.99 until you cancel. By subscribing, you authorize this recurring charge.
Billing. Payments are processed by Stripe, which acts as the merchant of record and seller. Stripe handles your payment method and any applicable taxes.
Cancellation. You can cancel anytime from Settings → Manage subscription (the Stripe customer portal), online and without extra steps. Cancellation takes effect at the end of your current billing period, and you keep Premium access until then.
Refunds. Except where required by law, payments are non-refundable for partial billing periods.
Price changes. We'll give you advance notice of any price change, which applies only to future renewals.

5. Your content

If you create content in the community (for example, practice problems), you keep ownership of what you create and grant Erudia a licence to host, display, and distribute it within the Service. You're responsible for content you submit and must have the right to share it.

6. Intellectual property

The Erudia name, lessons, curriculum, software, and design are owned by us and protected by law. We grant you a personal, non-transferable right to use the Service for learning.

7. Disclaimers

Erudia is an educational tool provided "as is." We don't guarantee specific learning outcomes, uninterrupted availability, or that the Service is error-free.

8. Limitation of liability

To the extent permitted by law, Erudia is not liable for indirect or consequential damages, and our total liability is limited to the amount you paid us in the 12 months before the claim.

9. Governing law

These terms are governed by the laws of the State of Illinois, United States, without regard to conflict-of-law rules.

10. Termination & changes

You can stop using Erudia and permanently delete your account anytime from Settings → Delete account. We may suspend accounts that violate these terms. We may update these terms; material changes will be notified in the app, and continued use means acceptance.

Questions: erudia@erudia.org · Privacy Policy · Accessibility