Agreement to Terms
These Terms of Use ("Terms") are a legal agreement between you and Driftline Ventures LLC ("we", "our", "the company"), the operator of the Crimson mobile application and the getcrimson.app website (together, the "Service"). By downloading, accessing, or using the Service, you agree to these Terms and our Privacy Policy. If you do not agree, do not use the Service.
Description of the Service
Crimson is an AI-powered period and fertility tracking application. It lets you log menstrual cycles, symptoms, moods, pregnancy, and perimenopause information, and provides predictions, insights, and educational content based on the data you enter.
Not Medical Advice
Crimson is not a medical device and does not provide medical advice, diagnosis, or treatment. All content in the app — including cycle predictions, fertility windows, AI-generated insights, screening surveys, and wellness reports — is for informational and educational purposes only. It is not a substitute for professional medical advice, and it must not be relied upon to make decisions about contraception, conception, pregnancy, or any health condition. Cycle predictions are statistical estimates and can be wrong. Always consult a qualified healthcare provider with questions about your health, and seek emergency care for urgent symptoms. Never disregard or delay professional medical advice because of something you read in the app.
Accounts and Security
Crimson requires a free account to use the app. You are responsible for keeping your credentials confidential and for all activity under your account. You must provide an accurate email address and be at least 13 years old (or the minimum age required in your jurisdiction). We may suspend or terminate accounts that violate these Terms.
Subscriptions and Billing
Crimson offers optional auto-renewable subscriptions that unlock premium features. Subscriptions are billed through the Apple App Store or Google Play, depending on your device, and are governed by that store's payment terms in addition to these Terms.
- Subscriptions automatically renew unless cancelled at least 24 hours before the end of the current billing period.
- You can manage or cancel your subscription at any time in your App Store or Google Play account settings. Deleting the app does not cancel a subscription.
- Free trials convert to paid subscriptions unless cancelled before the trial ends.
- Refunds are handled by the store you purchased from, subject to its policies.
For purchases made through the Apple App Store, your use is also governed by Apple's Standard End User License Agreement (EULA).
AI Features
The Service includes an optional AI assistant. Before any data is sent to our AI provider (OpenRouter), the app tells you exactly what will be sent, who receives it, and asks for your explicit permission, which you can revoke at any time in Settings. AI-generated responses are educational content only, may be inaccurate or incomplete, and are never medical advice — see "Not Medical Advice" above.
Acceptable Use
You agree not to:
- Use the Service for any unlawful purpose or in violation of applicable law
- Attempt to reverse engineer, interfere with, or disrupt the Service or its infrastructure
- Access another user's account or data
- Use the Service's output as a substitute for professional medical care
Your Data and Content
You retain ownership of the health data and content you enter. You grant us a limited license to process that data solely to operate and provide the Service to you, as described in our Privacy Policy. You may export or delete your data at any time through the app.
Intellectual Property
The Service, including its design, text, graphics, illustrations, and software, is owned by Driftline Ventures LLC and protected by intellectual property laws. These Terms do not grant you any rights to our trademarks, logos, or branding.
Disclaimers
THE SERVICE IS PROVIDED "AS IS" AND "AS AVAILABLE" WITHOUT WARRANTIES OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT. WITHOUT LIMITING THE "NOT MEDICAL ADVICE" SECTION, WE MAKE NO WARRANTY THAT PREDICTIONS, INSIGHTS, OR AI OUTPUT WILL BE ACCURATE, COMPLETE, OR SUITABLE FOR ANY PURPOSE.
Limitation of Liability
TO THE MAXIMUM EXTENT PERMITTED BY LAW, DRIFTLINE VENTURES LLC AND ITS OFFICERS, EMPLOYEES, AND PARTNERS 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 LIABILITY FOR ANY CLAIM RELATING TO THE SERVICE IS LIMITED TO THE AMOUNT YOU PAID US FOR THE SERVICE IN THE TWELVE MONTHS BEFORE THE CLAIM, OR FIFTY US DOLLARS (US$50) IF YOU PAID NOTHING.
Governing Law
These Terms are governed by the laws of the State of Tennessee, United States, without regard to conflict-of-law rules. Any dispute arising from these Terms or the Service will be brought in the state or federal courts located in Tennessee, and you consent to their jurisdiction.
Changes to These Terms
We may update these Terms from time to time. We will notify you of material changes through the app or by updating the "Last updated" date above. Continued use of the Service after changes take effect constitutes acceptance of the updated Terms.
Contact Us
Questions about these Terms? Contact us at support@getcrimson.app.