Terms of Use

Last updated: October 13, 2026

These Terms of Use ("Terms") form a binding agreement between you and Purple Hardstone LLC, a Georgia limited liability company (5555 Whittlesey Blvd Suite 1200 #1145, Columbus, GA 31909, United States) ("SkyLingoSift," "we," "us," or "our") governing your access to and use of the SkyLingoSift mobile application and related services (together, the "Service"). By creating an account, or by accessing or using the Service in any way, you agree to be bound by these Terms and by our Privacy Policy, which is incorporated by reference. If you do not agree, do not use the Service.

1. Eligibility and accounts

You must be at least 13 years old to use the Service. A real account (Apple, Google, or Email/username) is required. You represent that all information you provide is accurate, that you will keep your login credentials confidential, and that you are responsible for all activity under your account, whether or not authorized by you, except to the extent caused by our own breach of these Terms.

2. Subscription, billing, and cancellation

• New accounts receive a free 7-day trial with full access; nothing is charged until the trial ends, and we send a reminder at least 2 days beforehand.
• Paid plans are available and may be changed at any time from Profile → Manage subscription: Monthly and Annual. Current pricing is shown in the app before you subscribe or change plans.
• We do not offer, and will not introduce, weekly billing.
• You may cancel at any time, in a single step, from Profile → Manage subscription. Cancellation takes effect immediately: it revokes your login and deletes the learning data stored on that device. It does not, by itself, entitle you to a refund of amounts already charged, except as described below.
• If you are charged in error, or are dissatisfied, contact us at the email below. See our Refund & Cancellation Policy for exactly how refunds work depending on where you subscribed.
• Prices, plans, and this trial structure may change prospectively; changes will not retroactively alter what you were already charged, and we will give reasonable notice before any change takes effect for your account's next billing cycle.

3. The AI companion and generated content

Conversational replies, corrections, exercises, and other content are generated by an AI language model and may at times be inaccurate, incomplete, contextually inappropriate, or reflect a stylistic judgment call, in the same way a human tutor's answer might be imperfect. The Service is intended as a language-practice tool and is not a substitute for professional translation, certified interpretation, or legal, medical, or official-document review. You are solely responsible for evaluating and verifying any output before relying on it for any consequential purpose.

4. Acceptable use

You agree not to:

• use the Service for any unlawful purpose, or to generate content that is illegal, harassing, defamatory, or that infringes another person's intellectual property, privacy, or other rights;
• attempt to reverse-engineer, decompile, extract, or otherwise derive the underlying AI models, source code, or non-public APIs the Service relies on;
• probe, scan, or attempt to circumvent any rate-limiting, authentication, or security mechanism of the Service;
• use automated means (bots, scrapers) to access the Service outside of its intended client applications;
• resell, sublicense, or provide commercial access to the Service to third parties without our prior written consent.

We may suspend or terminate access for a violation of this section.

5. Intellectual property

The Service, including its software, curriculum content, companion designs, trademarks, and underlying technology, is owned by Purple Hardstone LLC or its licensors and is protected by intellectual property laws. These Terms grant you a limited, personal, non-exclusive, non-transferable, revocable license to use the Service for its intended purpose. No other rights are granted by implication, estoppel, or otherwise.

Text or speech you submit while practicing remains yours; you grant us a limited license to process it solely to operate the Service (generating replies, corrections, and your own learning history), as described in our Privacy Policy.

6. Third-party services

The Service relies on third-party infrastructure, including OpenAI, L.L.C. (AI text generation), Microsoft Corporation (Azure Speech service — pronunciation scoring, speech-to-text, and the companion's neural voice output) and Supabase (authentication and, for Google/Email accounts, synced learning data). Your use of the Service is also subject to the applicable app store's (Apple App Store / Google Play) own terms, which govern the purchase transaction on platforms where in-app purchase is used.

7. Disclaimer of warranties

THE SERVICE IS PROVIDED "AS IS" AND "AS AVAILABLE," WITHOUT WARRANTIES OF ANY KIND, WHETHER EXPRESS, IMPLIED, OR STATUTORY, INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT, OR THAT THE SERVICE WILL BE UNINTERRUPTED, ERROR-FREE, OR SECURE. WE DO NOT WARRANT ANY SPECIFIC LEARNING OUTCOME.

8. Limitation of liability

TO THE MAXIMUM EXTENT PERMITTED BY LAW, Purple Hardstone LLC AND ITS OFFICERS, EMPLOYEES, AND AGENTS WILL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, OR ANY LOSS OF DATA, PROFITS, OR GOODWILL, ARISING FROM YOUR USE OF THE SERVICE. OUR TOTAL AGGREGATE LIABILITY FOR ANY CLAIM ARISING OUT OF OR RELATING TO THE SERVICE OR THESE TERMS WILL NOT EXCEED THE GREATER OF (A) THE AMOUNT YOU PAID US IN THE 12 MONTHS PRECEDING THE CLAIM, OR (B) US$50. SOME JURISDICTIONS DO NOT ALLOW THE EXCLUSION OR LIMITATION OF CERTAIN DAMAGES, SO SOME OF THE ABOVE LIMITATIONS MAY NOT APPLY TO YOU.

9. Indemnification

You agree to indemnify and hold harmless Purple Hardstone LLC from any claim, liability, damage, loss, or expense (including reasonable attorneys' fees) arising from your violation of these Terms, your misuse of the Service, or content you submit in violation of another person's rights.

10. Governing law and dispute resolution

These Terms are governed by the laws of the State of Georgia and applicable U.S. federal law, without regard to conflict-of-law principles. Before filing a claim, you agree to first contact us at the email below so we can attempt to resolve the dispute informally. Any dispute that cannot be resolved informally within 30 days may be brought only in the state or federal courts located in Georgia, and you consent to personal jurisdiction there, except where applicable law in your country of residence grants you the right to bring a claim in your local courts or otherwise limits your ability to agree to this section — in that case, this section applies to the maximum extent that law permits.

11. Export compliance and sanctions

You may not use the Service if you are located in, or ordinarily resident in, a country or region subject to comprehensive U.S. embargo, or if you are listed on any U.S. government restricted-party list, and you agree to comply with all applicable export control and sanctions laws in your use of the Service.

12. Changes to the Service or these Terms

We may modify the Service or these Terms at any time. Material changes to these Terms will be reflected by an updated "Last updated" date, and, where required by law, we will provide additional notice. Continued use of the Service after a change takes effect constitutes acceptance of the revised Terms.

13. Termination

You may terminate your account at any time as described in Section 2. We may suspend or terminate your access for a breach of these Terms, or discontinue the Service, with reasonable notice where practicable. Sections 5, 7, 8, 9, 10, and any other provision that by its nature should survive, will survive termination.

14. Severability and entire agreement

If any provision of these Terms is found unenforceable, the remaining provisions remain in full effect. These Terms, together with our Privacy Policy, constitute the entire agreement between you and us regarding the Service and supersede any prior agreements on the same subject.

15. Contact

Questions about these Terms: support@skymraud.com.