Terms of Service

These Terms of Service ("Terms") govern your access to and use of MojiMori ("the Service"), a product of h15n Ventures ("h15n Ventures," "we," "us," or "our"), operated at mojimori.app. By accessing or using the Service, you agree to be bound by these Terms. If you do not agree, do not use the Service.

1. Eligibility

You must be at least 13 years of age to use the Service. If you are under 18, you represent that your parent or legal guardian has reviewed and agreed to these Terms on your behalf. By using the Service, you represent and warrant that you meet these eligibility requirements.

2. Description of Service

MojiMori is a Japanese kanji dictionary and spaced-repetition study tool operated by h15n Ventures. The Service provides kanji reference data, word breakdowns, reading attribution, and a review system for memorization. The Service is provided for educational and personal reference purposes.

3. User Accounts

To access certain features, you must create an account. You agree to:

Provide accurate and complete registration information
Maintain the confidentiality of your account credentials
Accept sole responsibility for all activity that occurs under your account
Notify us promptly of any unauthorized use of your account

We reserve the right to suspend or terminate accounts that violate these Terms or that we reasonably believe are being used fraudulently.

4. Acceptable Use

You agree not to:

Use the Service for any unlawful purpose or in violation of any applicable law
Attempt to gain unauthorized access to any part of the Service, its servers, or any connected systems
Interfere with or disrupt the integrity or performance of the Service
Scrape, crawl, or use automated means to access the Service without our prior written consent
Reproduce, redistribute, or create derivative works from the Service's content or data without authorization
Use the Service to harass, abuse, or harm others
Impersonate any person or entity, or falsely state or misrepresent your affiliation

5. Intellectual Property

The Service and its original content (excluding user-generated content and third-party data used under license) are and shall remain the exclusive property of h15n Ventures and its licensors. The Service is protected by copyright, trademark, and other laws. The "MojiMori" name and our trademarks may not be used without prior written consent from h15n Ventures.

Kanji data incorporated in the Service may be derived from publicly available sources used under their respective licenses (including, where applicable, Creative Commons licenses). Such data remains subject to the terms of its original license.

6. User Content

You retain ownership of any content you submit to the Service (such as study notes or feedback). By submitting content, you grant h15n Ventures a non-exclusive, worldwide, royalty-free license to use, display, and store such content solely for the purpose of operating and improving the Service.

7. Paid Plans, Billing, and Refunds

Some features (the "Pro" tier) require a paid subscription or one-time purchase. Payments are processed by Stripe on behalf of h15n Ventures. By purchasing, you authorize h15n Ventures to charge your payment method for the plan you selected at the price displayed at checkout, including any applicable taxes.

Subscription billing

Monthly plan: billed every month until cancelled.
Annual plan: billed once per year until cancelled.
Lifetime plan: a single one-time charge for ongoing access for the lifetime of the Service. "Lifetime" refers to the operational lifetime of MojiMori; if the Service is permanently shut down, lifetime access ends with it.

You can cancel any subscription at any time from your billing settings at /billing. Cancellation stops future renewals; you retain access through the end of the current billing period. We do not pro-rate or refund unused subscription time.

No refunds — try the free tier first

We do not offer refunds. The free tier — full dictionary access plus Grade 1 spaced-repetition lessons — is your trial. It uses the same study UI, the same SRS algorithm, and the same Kanji Atlas that Pro uses. Try it before upgrading.

Recurring renewals (monthly or annual) are not refundable; the remedy is to cancel before the next renewal date. Lifetime purchases are not refundable.

If something genuinely sympathetic comes up (medical emergency, financial hardship, billing error), email missingworkbook@h15n.com and we'll work it out case by case.

Price changes

We may change the prices of paid plans at any time. Existing subscribers will continue at their current price for the remainder of the current billing period and will be notified of any change before it applies to their next renewal. Lifetime purchases are not subject to future price changes.

Failed payments and account suspension

If a payment fails, we will retry collection per Stripe's default schedule. If collection ultimately fails, your Pro access reverts to the free tier until payment is updated. We may, but are not required to, send reminder emails before access is downgraded.

8. Disclaimer of Warranties

THE SERVICE IS PROVIDED ON AN "AS IS" AND "AS AVAILABLE" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT.

h15n Ventures does not warrant that the Service will be uninterrupted, error-free, or free of harmful components. We do not guarantee the accuracy, completeness, or usefulness of any dictionary data, linguistic information, or educational content provided through the Service. You use such information at your own discretion and risk.

9. Limitation of Liability

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, IN NO EVENT SHALL H15N VENTURES, ITS OPERATORS, AFFILIATES, OR LICENSORS BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, OR ANY LOSS OF PROFITS OR REVENUES, WHETHER INCURRED DIRECTLY OR INDIRECTLY, OR ANY LOSS OF DATA, USE, GOODWILL, OR OTHER INTANGIBLE LOSSES, ARISING FROM:

Your access to or use of (or inability to access or use) the Service
Any content obtained from the Service
Unauthorized access, use, or alteration of your transmissions or content

IN NO EVENT SHALL H15N VENTURES' AGGREGATE LIABILITY EXCEED THE AMOUNT YOU PAID US, IF ANY, IN THE TWELVE (12) MONTHS PRECEDING THE CLAIM.

10. Indemnification

You agree to indemnify, defend, and hold harmless h15n Ventures, its operators, affiliates, and licensors from and against any claims, liabilities, damages, losses, and expenses (including reasonable attorneys' fees) arising out of or in connection with your use of the Service or your violation of these Terms.

11. Termination

We may terminate or suspend your access to the Service immediately, without prior notice or liability, for any reason, including breach of these Terms. Upon termination, your right to use the Service will immediately cease. All provisions of these Terms that by their nature should survive termination shall survive, including ownership provisions, warranty disclaimers, indemnification, and limitations of liability.

12. Modifications to the Service and Terms

h15n Ventures reserves the right to modify or discontinue the Service (or any part thereof) at any time, with or without notice. We may revise these Terms from time to time. The most current version will always be available at this page. By continuing to use the Service after revisions become effective, you agree to be bound by the revised Terms.

13. Governing Law

These Terms shall be governed by and construed in accordance with applicable law, without regard to conflict-of-law principles.

14. Severability

If any provision of these Terms is held to be invalid or unenforceable, the remaining provisions shall remain in full force and effect.

15. Entire Agreement

These Terms, together with the Privacy Policy and Cookie Policy, constitute the entire agreement between you and h15n Ventures regarding the Service and supersede all prior agreements and understandings.

16. Contact

MojiMori is operated by h15n Ventures. Questions about these Terms? Contact us at missingworkbook@h15n.com.