Gravity

Terms of Service

Last updated — July 7, 2026

Welcome to Gravity. These Terms of Service ("Terms") govern your use of the Gravity website and the Gravity mobile application (together, the "Service"), operated by Heimdall Space, a company registered in Canada ("Heimdall Space", "we", "us", "our"). By using the Service you agree to these Terms. If you don't agree, please don't use the Service.

1. The Service

Gravity is a language-learning companion that helps you learn from real Japanese: podcasts, videos, songs, and text you capture. It turns it into personalized vocabulary and practice. The Service is provided through our website and our mobile apps on iOS and Android.

The Service is not intended for distribution to or use by any person or entity in any jurisdiction where such distribution or use would be contrary to law or regulation, or which would subject us to any registration requirement. Anyone who chooses to access the Service from other locations does so on their own initiative and is solely responsible for compliance with local laws.

2. Eligibility and accounts

You must be at least 13 years old to use Gravity (16 in jurisdictions where that is the minimum age for digital consent). If you are under the age of majority where you live, you may only use the Service with the involvement of a parent or legal guardian.

By using the Service, you represent and warrant that:

• You have the legal capacity to agree to these Terms and will comply with them.
• You are not a minor in the jurisdiction in which you reside, or you have the involvement of a parent or legal guardian as described above.
• You will not access the Service through automated or non-human means, whether through a bot, script, or otherwise.
• You will not use the Service for any illegal or unauthorized purpose.
• Your use of the Service will not violate any applicable law or regulation.

If you create an account, you're responsible for keeping your credentials secure and for anything that happens under your account. Notify us at support@learngravity.com promptly if you suspect unauthorized access. If any information you provide is untrue, inaccurate, not current, or incomplete, we may suspend or terminate your account and refuse current or future use of the Service.

3. Your license to use the Service

Subject to these Terms, we grant you a personal, non-exclusive, non-transferable, revocable license to use the Service for your own non-commercial language-learning purposes. You may not:

• Copy, modify, or reverse engineer any part of the Service, except as permitted by applicable law.
• Use scrapers, spiders, bots, or other automated tools to access, retrieve, or extract data from the Service.
• Systematically retrieve content from the Service to create or compile a collection, database, or directory without our written permission.
• Use the Service to build a competing product, or to train machine-learning models without our written permission.
• Resell, sublicense, or otherwise commercially exploit any part of the Service or its content.
• Remove or obscure any copyright, trademark, or other proprietary notices.

The source code, databases, software, designs, audio, video, text, photographs, and graphics that make up the Service (the "Content"), together with the trademarks, service marks, and logos in it (the "Marks"), are owned by or licensed to Heimdall Space and are protected by copyright, trademark, and other intellectual property laws. "Gravity", the Gravity logo, and the Aio mascot are trademarks of Heimdall Space. We reserve all rights not expressly granted to you in these Terms, and any breach of this section is a material breach that will terminate your right to use the Service immediately.

4. Your content and submissions

You retain ownership of the videos you import, photos, audio, notes, and other content you submit to Gravity ("Your Content"). By using the Service, you grant us a worldwide, royalty-free license to host, store, process, and display Your Content solely to operate the Service for you (for example, to power your study sessions, sync across devices, and back it up).

You are responsible for ensuring you have the rights to any content you capture (for example, not photographing copyrighted material or identifiable people without permission where required), and you represent that Your Content is not illegal, harassing, hateful, defamatory, obscene, abusive, discriminatory, threatening, sexually explicit, false, or misleading. To the extent permitted by law, you waive any moral rights in Your Content as needed for us to provide the Service.

Submissions and feedback. If you send us questions, comments, suggestions, ideas, feedback, or other information about the Service ("Submissions"), you agree that we may use and share that feedback for any lawful purpose — commercial or otherwise — without acknowledgment or compensation to you, and you assign to us all intellectual property rights in such Submissions. You confirm that Submissions are original to you or that you have the rights to make them, and that they do not constitute confidential information. You remain solely responsible for your Submissions and you agree to reimburse us for any losses we suffer because of your breach of this section, third-party intellectual property rights, or applicable law.

5. Acceptable use

You may not access or use the Service for any purpose other than that for which we make it available. As a user of the Service, you agree not to:

• Break the law, infringe anyone's rights, or harass, abuse, intimidate, or threaten other users or our staff.
• Upload content that is illegal, hateful, sexually exploitative, harmful to minors, defamatory, or that infringes any third party's rights.
• Trick, defraud, or mislead us or other users, including any attempt to obtain sensitive account information such as passwords.
• Circumvent, disable, or otherwise interfere with security-related features of the Service, including features that prevent or restrict use of any Content.
• Disparage, tarnish, or otherwise harm, in our opinion, us or the Service.
• Use any information obtained from the Service in order to harass, abuse, or harm another person.
• Make improper use of our support services or submit false reports of abuse or misconduct.
• Engage in unauthorized framing of, or linking to, the Service.
• Upload or transmit viruses, Trojan horses, or other harmful material, or content that interferes with anyone's use of the Service.
• Engage in any automated use of the Service, including using scripts, robots, or similar data-mining tools, or use the Service for any data gathering or extraction beyond normal use.
• Delete the copyright or other proprietary rights notice from any Content.
• Impersonate another user or person, or use the username of another user.
• Upload or transmit any material that acts as a passive or active information collection or transmission mechanism (clear GIFs, 1×1 pixels, web bugs, spyware, or similar devices).
• Interfere with, disrupt, or create an undue burden on the Service or the networks or services connected to it.
• Attempt to bypass any measures of the Service designed to prevent or restrict access.
• Copy or adapt the Service's software, including HTML, JavaScript, or other code.
• Except as permitted by applicable law, decipher, decompile, disassemble, or reverse engineer any of the software that makes up the Service.
• Use a buying agent or purchasing agent to make purchases through the Service.
• Collect usernames or email addresses of users by electronic or other means for sending unsolicited email, or create user accounts by automated means or under false pretenses.
• Use the Service as part of any effort to compete with us, or for any revenue-generating endeavor or commercial enterprise that is not specifically endorsed by us.

6. Service management

We reserve the right, but not the obligation, to: (1) monitor the Service for violations of these Terms; (2) take appropriate legal action against anyone who, in our sole discretion, violates the law or these Terms, including reporting such user to law enforcement authorities; (3) refuse, restrict access to, limit the availability of, or disable (to the extent technologically feasible) any of Your Content or any portion of it; (4) remove from the Service or otherwise disable files and content that are excessive in size or are otherwise burdensome to our systems; and (5) otherwise manage the Service in a manner designed to protect our rights and property and to facilitate the proper functioning of the Service.

7. Educational disclaimer

Gravity is a learning aid, not a substitute for formal instruction, certification, or professional translation. Language outcomes vary by individual; we make no guarantees about fluency, proficiency, or test results. Translations and example sentences generated by the Service may contain errors and should not be relied upon for legal, medical, or safety-critical communication.

Some study materials, including dictionary links, flashcards, exercises, study notes, study text, summaries, translations, and related learning aids, may be generated automatically from or associated with material you choose to study. These materials may be incomplete or inaccurate and may be changed, limited, or removed at any time.

8. Subscriptions and payments

Gravity offers paid subscriptions on a monthly or yearly basis. To access paid features, you must register for a monthly or yearly plan. The current price for each plan is shown in the app before you purchase and may be updated from time to time.

Free trial. New subscribers may be offered a 7-day free trial at the start of their subscription. Eligibility for the free trial is determined by the App Store under Apple's rules (typically one trial per Apple ID). At the end of the trial, your subscription will automatically convert to a paid subscription at the price of the plan you selected, unless you cancel before the trial ends.

Auto-renewal. Your subscription renews automatically at the end of each billing period (monthly or yearly) at the then-current price for your plan, unless you cancel at least 24 hours before the end of the current period. Renewal charges are made by Apple to the payment method on file with your Apple ID within 24 hours of the period ending.

Cancellation. You can cancel at any time through your Apple ID subscription settings (Settings → [your name] → Subscriptions on iOS). Cancellation takes effect at the end of the current billing period; you'll keep access to paid features until then. Deleting the app does not cancel your subscription.

Billing through the App Store. Subscriptions purchased through the Apple App Store are billed by Apple and are also governed by Apple's terms (including the Apple Media Services Terms and Conditions and the standard Auto-Renewing Subscription terms) in addition to these Terms. Where Apple's terms conflict with ours on a billing matter, Apple's terms control.

Refunds. Refund requests for App Store purchases are handled by Apple under their refund policy. If you believe a charge was made in error or you have a billing concern we can help with, contact us at support@learngravity.com and we'll review refund requests on a pro-rated or case-by-case basis where appropriate; we are not obligated to provide refunds beyond what Apple grants or what applicable consumer-protection law requires.

Price changes. We may change subscription prices from time to time. Any price change will be communicated in advance, and where required by Apple or by law, will require your consent before taking effect on your next renewal.

9. Term and termination

These Terms remain in full force and effect while you use the Service. You may stop using the Service and delete your account at any time. Without limiting any other provision of these Terms, we reserve the right, in our sole discretion and without notice or liability, to deny access to and use of the Service (including blocking certain IP addresses), to any person for any reason or for no reason, including for breach of any representation, warranty, or covenant in these Terms or of any applicable law or regulation. We may terminate your use of the Service or delete any content you posted at any time, without warning, in our sole discretion.

If we terminate or suspend your account for any reason, you are prohibited from registering and creating a new account under your name, a fake or borrowed name, or the name of any third party, even if you may be acting on behalf of the third party. In addition to terminating or suspending your account, we reserve the right to take appropriate legal action, including pursuing civil, criminal, and injunctive redress.

10. Modifications and interruptions

We reserve the right to change, modify, or remove the contents of the Service at any time or for any reason at our sole discretion without notice. We have no obligation to update any information on the Service, and we will not be liable to you or any third party for any modification, price change, suspension, or discontinuance of the Service.

We cannot guarantee the Service will be available at all times. We may experience hardware, software, or other problems, or need to perform maintenance, resulting in interruptions, delays, or errors. You agree that we have no liability for any loss, damage, or inconvenience caused by your inability to access or use the Service during any downtime. Nothing in these Terms obligates us to maintain and support the Service or to supply any corrections, updates, or releases.

11. Third-party services and content

The Service relies on third-party providers (for example, app stores, analytics, cloud hosting). Their terms and privacy policies apply to their portion of the experience. We're not responsible for outages, pricing, or policy changes by these third parties.

Third-party video content. The Service may let you study third-party video content — for example, by importing a link or identifier, or by watching a video through an embedded player provided by the platform that hosts it. Streaming, playback, and access to the underlying video or audio are provided by that third-party platform, not by Gravity, and are subject to that platform's own terms and privacy policy. Gravity does not own, host, upload, store, cache, or control the underlying third-party video or audio.

Gravity may generate learning materials from or associated with third-party video content. Those materials are part of the learning experience and may be changed, limited, or removed if the underlying content becomes unavailable, a platform changes its service, or we otherwise determine removal is appropriate.

Rights holder requests. If you believe content or learning materials available through the Service infringe your rights or should not be available, contact us at support@learngravity.com with enough detail for us to identify the material and review the request.

12. Corrections

There may be information on the Service that contains typographical errors, inaccuracies, or omissions, including descriptions, pricing, availability, and other information. We reserve the right to correct any errors, inaccuracies, or omissions and to change or update the information on the Service at any time, without prior notice.

13. User data

We will maintain certain data that you transmit to the Service for the purpose of managing the performance of the Service, as well as data relating to your use of the Service. Although we perform regular routine backups, you are solely responsible for all data that you transmit or that relates to any activity you have undertaken using the Service. You agree that we have no liability to you for any loss or corruption of any such data, and you waive any right of action against us arising from such loss or corruption.

14. Disclaimer of warranties

THE SERVICE IS PROVIDED ON AN "AS IS" AND "AS AVAILABLE" BASIS. YOU AGREE THAT YOUR USE OF THE SERVICE WILL BE AT YOUR SOLE RISK. TO THE FULLEST EXTENT PERMITTED BY LAW, WE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED, IN CONNECTION WITH THE SERVICE AND YOUR USE OF IT, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT. WE MAKE NO WARRANTIES OR REPRESENTATIONS ABOUT THE ACCURACY OR COMPLETENESS OF THE SERVICE'S CONTENT OR THE CONTENT OF ANY WEBSITES OR MOBILE APPLICATIONS LINKED TO THE SERVICE, AND WE ASSUME NO LIABILITY OR RESPONSIBILITY FOR (1) ERRORS, MISTAKES, OR INACCURACIES OF CONTENT; (2) PERSONAL INJURY OR PROPERTY DAMAGE OF ANY NATURE RESULTING FROM YOUR ACCESS TO AND USE OF THE SERVICE; (3) ANY UNAUTHORIZED ACCESS TO OR USE OF OUR SERVERS AND/OR ANY PERSONAL OR FINANCIAL INFORMATION STORED ON THEM; (4) ANY INTERRUPTION OR CESSATION OF TRANSMISSION TO OR FROM THE SERVICE; (5) ANY BUGS, VIRUSES, OR TROJAN HORSES TRANSMITTED TO OR THROUGH THE SERVICE BY ANY THIRD PARTY; OR (6) ANY ERRORS OR OMISSIONS IN ANY CONTENT, OR ANY LOSS OR DAMAGE INCURRED AS A RESULT OF THE USE OF ANY CONTENT POSTED, TRANSMITTED, OR OTHERWISE MADE AVAILABLE VIA THE SERVICE.

15. Limitation of liability

TO THE MAXIMUM EXTENT PERMITTED BY LAW, HEIMDALL SPACE AND ITS DIRECTORS, EMPLOYEES, AND AGENTS WILL NOT BE LIABLE TO YOU OR ANY THIRD PARTY FOR ANY INDIRECT, CONSEQUENTIAL, EXEMPLARY, INCIDENTAL, SPECIAL, OR PUNITIVE DAMAGES, INCLUDING LOST PROFITS, LOST REVENUE, LOSS OF DATA, OR OTHER DAMAGES ARISING FROM YOUR USE OF (OR INABILITY TO USE) THE SERVICE, EVEN IF WE HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. NOTWITHSTANDING ANYTHING TO THE CONTRARY, OUR TOTAL LIABILITY FOR ANY CLAIM RELATING TO THE SERVICE WILL NOT EXCEED THE GREATER OF (A) THE AMOUNT YOU PAID US IN THE 12 MONTHS BEFORE THE CLAIM, OR (B) USD $100.

Some jurisdictions don't allow these limitations, in which case they apply only to the extent permitted by law, and you may have additional rights.

16. Indemnification

You agree to defend, indemnify, and hold Heimdall Space harmless, including our subsidiaries, affiliates, officers, agents, partners, and employees, from and against any loss, damage, liability, claim, or demand — including reasonable attorneys' fees and expenses — made by any third party arising out of: (1) your use of the Service; (2) your breach of these Terms; (3) any breach of your representations and warranties in these Terms; (4) your violation of the rights of a third party, including intellectual property rights; or (5) any overt harmful act toward any other user of the Service. We reserve the right, at your expense, to assume the exclusive defense and control of any matter for which you are required to indemnify us, and you agree to cooperate with our defense of such claims.

17. Electronic communications and signatures

Visiting the Service, sending us emails, and completing online forms constitute electronic communications. You consent to receive electronic communications, and you agree that all agreements, notices, disclosures, and other communications we provide to you electronically — via email and within the Service — satisfy any legal requirement that such communication be in writing. YOU HEREBY AGREE TO THE USE OF ELECTRONIC SIGNATURES, CONTRACTS, ORDERS, AND OTHER RECORDS, AND TO ELECTRONIC DELIVERY OF NOTICES, POLICIES, AND RECORDS OF TRANSACTIONS INITIATED OR COMPLETED BY US OR VIA THE SERVICE. You waive any rights or requirements under any laws that require an original (non-electronic) signature, the delivery or retention of non-electronic records, or payments or the granting of credits by any non-electronic means.

18. Governing law and dispute resolution

These Terms are governed by the laws of the Province of British Columbia and the federal laws of Canada applicable therein, without regard to conflict of laws principles. Subject to the informal negotiation requirement below, any dispute arising out of or relating to these Terms or the Service will be resolved in the courts located in Vancouver, British Columbia, unless local consumer protection law requires otherwise.

Informal negotiations. To expedite resolution and control the cost of any dispute, controversy, or claim related to these Terms (each a "Dispute"), the parties agree to first attempt to negotiate any Dispute informally for at least thirty (30) days before initiating formal proceedings. Informal negotiations commence upon written notice from one party to the other.

Restrictions. Any proceeding will be limited to the Dispute between the parties individually. To the full extent permitted by law, (a) no proceeding shall be joined with any other; (b) there is no right or authority for any Dispute to be brought on a class-action basis or to use class action procedures; and (c) there is no right or authority for any Dispute to be brought in a representative capacity on behalf of the general public or any other persons.

Exceptions. The informal-negotiation requirement does not apply to: (a) any Dispute seeking to enforce or protect, or concerning the validity of, any intellectual property rights of a party; (b) any Dispute related to, or arising from, allegations of theft, piracy, invasion of privacy, or unauthorized use; or (c) any claim for injunctive relief.

19. Miscellaneous

These Terms and any policies or operating rules we post on or about the Service constitute the entire agreement between you and us. Our failure to exercise or enforce any right or provision of these Terms will not operate as a waiver of that right or provision. These Terms operate to the fullest extent permissible by law. We may assign any or all of our rights and obligations to others at any time. We are not responsible or liable for any loss, damage, delay, or failure to act caused by any cause beyond our reasonable control. If any provision of these Terms is determined to be unlawful, void, or unenforceable, that provision is deemed severable and does not affect the validity of any remaining provisions. No joint venture, partnership, employment, or agency relationship is created between you and us as a result of these Terms or your use of the Service. You agree that these Terms will not be construed against us by virtue of having drafted them, and you waive any defenses based on the electronic form of these Terms or the lack of signing by the parties.

20. Changes to these Terms

We may update these Terms from time to time. When we make material changes, we'll update the "Last updated" date at the top and notify users through the website or app. Continued use of the Service after the changes take effect constitutes acceptance of the new Terms.

21. Contact

Questions about these Terms? Email support@learngravity.com.

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