Butter Terms of Service
Last updated: July 14, 2026
These Terms of Service ("Terms") are an agreement between you and Gregarious, Inc. ("Gregarious," "we," "us"), the company that makes Butter — an AI yoga and mobility coach for iOS. They apply to the Butter app, butter.yoga, and every service we provide under the Butter name (together, the "Service").
Each section opens with a short plain-language summary. The short summaries are for convenience only; the full terms govern.
Our Privacy Policy and Consumer Health Data Privacy Policy describe how we handle your data. They are incorporated into these Terms by reference.
1. Accepting these Terms
By downloading, accessing, or using the Service, you agree to these Terms. If you do not agree, do not use the Service.
You must be at least 18 years old to use the Service, or have the consent and supervision of a parent or legal guardian who agrees to these Terms on your behalf. The Service is offered for use in the United States; we make no representation that it is appropriate or available elsewhere.
2. What Butter is (and is not)
Butter provides guided yoga and mobility sessions planned by an AI coach. The coach uses the information you choose to give it — such as injury notes, areas you want to work on, and your session history — to plan sessions and speak to you about your practice.
Butter is a general wellness product. It is not:
- medical care, medical advice, diagnosis, or treatment;
- physical therapy, rehabilitation, or any licensed healthcare service;
- a substitute for the advice of a physician, physical therapist, or other qualified health professional.
Nothing in the Service creates a doctor-patient, therapist-patient, or any other clinical relationship between you and Gregarious. Never disregard professional medical advice, or delay seeking it, because of something the Service said.
3. Exercise and medical disclaimer; assumption of risk
Please read this section carefully. It affects your legal rights.
Yoga, stretching, and mobility work are physical activities that carry inherent risks, including muscle strain, joint injury, aggravation of existing conditions, and, in rare cases, serious injury. Before using the Service, consult a physician — especially if you are pregnant, have a heart condition, a history of injury or surgery, or any other condition that could be affected by physical activity.
While practicing:
- Stop immediately if you feel pain, dizziness, shortness of breath, or discomfort beyond normal muscular effort, and seek medical attention if symptoms persist.
- Work within your own limits. The coach plans around what you tell it, but it cannot see you, cannot examine you, and cannot know your body's condition in the moment. You are the final judge of what is safe for you.
- Ensure your practice space is safe and free of hazards.
TO THE MAXIMUM EXTENT PERMITTED BY LAW, YOU KNOWINGLY AND VOLUNTARILY ASSUME ALL RISKS ASSOCIATED WITH YOUR USE OF THE SERVICE, INCLUDING THE RISK OF PHYSICAL INJURY. GREGARIOUS IS NOT LIABLE FOR ANY INJURY, CONDITION, OR DAMAGES YOU SUSTAIN IN CONNECTION WITH PHYSICAL ACTIVITY UNDERTAKEN IN CONNECTION WITH THE SERVICE, TO THE EXTENT SUCH LIABILITY MAY LAWFULLY BE DISCLAIMED.
4. Your account
You may use parts of the Service anonymously, without creating an account. To keep your practice history across devices and access paid features, you can create an account — for example with Sign in with Apple.
If you create an account, you agree to:
- provide accurate information and keep it current;
- keep your credentials secure and not share your account;
- tell us promptly at support@butter.yoga if you suspect unauthorized use of your account.
You are responsible for activity that occurs under your account. We may suspend or terminate accounts as described in Section 10.
You can delete your account at any time from the app's Profile settings. What deletion does to your data is described in the Privacy Policy.
5. Subscriptions, free trials, and auto-renewal
Automatic renewal. Butter membership is an auto-renewing subscription billed through Stripe, our payment processor. Depending on the plan you choose, your subscription renews monthly or annually at the price disclosed at checkout, and your payment method is charged at the start of each renewal period, until you cancel.
Price and trial disclosure. The subscription price, billing cadence, and any free trial terms are displayed on the checkout page before you confirm payment. If your plan includes a free trial, checkout will state the trial length and the date your first charge occurs. If you do not cancel before the trial ends, your payment method will be charged the disclosed subscription price.
How to cancel. You can cancel at any time:
- In the app: Profile → Manage Membership, which opens your Stripe billing portal; or
- Directly through the Stripe billing portal link in your subscription emails.
Cancellation takes effect at the end of your current billing period; you keep access until then. Canceling requires no phone call, no email, and no more steps than signing up took.
Annual reminder. At least once every 12 months, we will send you a notice identifying your subscription, its price and renewal cadence, and how to cancel.
Price changes. If we change the subscription price, we will notify you in advance and the new price will apply only from your next renewal after the notice period. If you do not want to pay the new price, cancel before the renewal.
Refunds. Except where required by law, payments are non-refundable and we do not provide refunds or credits for partial billing periods. Canceling stops future charges and you keep access through the end of the period you paid for.
Payment processing. Payments are processed by Stripe. We never see or store your card number. Stripe's handling of your payment information is described in our Privacy Policy and Stripe's own privacy policy.
6. Acceptable use
You agree not to:
- use the Service in any way that violates applicable law;
- probe, scan, or test the vulnerability of the Service, or breach or circumvent its security or authentication measures;
- access the Service by automated means (scraping, bots) or attempt to extract its underlying models, prompts, or data;
- reverse engineer, decompile, or disassemble any part of the Service, except where that restriction is prohibited by law;
- resell, sublicense, or commercially exploit the Service or its content;
- interfere with other users' use of the Service, or use the Service to harass or harm anyone;
- misrepresent your identity or affiliation, or use another person's account.
7. Your content and license to us
The Service lets you provide content — notes to your coach, voice-note transcripts, profile details, and similar material ("Your Content"). Your Content remains yours. You grant Gregarious a limited, non-exclusive, worldwide, royalty-free license to host, store, process, transmit, and display Your Content solely to operate, provide, secure, and improve the Service for you and as described in our Privacy Policy. This license ends when Your Content is deleted from our systems, except for de-identified data and records we retain as described in the Privacy Policy.
You are responsible for Your Content. Do not submit content you do not have the right to share.
8. The AI coach
The coaching, session plans, and spoken guidance in the Service are generated by artificial intelligence based on the information available to it. AI-generated guidance:
- may contain errors, omissions, or suggestions that are not right for your body or situation;
- is not medical, therapeutic, or other professional advice (see Sections 2 and 3);
- should always be weighed against your own judgment and, where relevant, the advice of a qualified professional.
We work to make the coach accurate and careful, but we do not warrant that any particular output is correct, complete, or suitable for you.
9. Our intellectual property
The Service, including its software, design, audio, text, session content, and trademarks (excluding Your Content), is owned by Gregarious or its licensors and is protected by intellectual property laws. We grant you a personal, limited, non-exclusive, non-transferable, revocable license to use the Service for your own non-commercial use, subject to these Terms. We reserve all rights not expressly granted.
10. Termination
You may stop using the Service and delete your account at any time.
We may suspend or terminate your access to the Service if you materially breach these Terms, if we reasonably believe your use poses a risk to the Service or other users, or if we are required to by law. Where practical, we will notify you and, for curable breaches, give you a chance to fix the problem.
We may also discontinue the Service or any part of it; if we discontinue paid features you have paid for, we will provide a pro-rata refund for the unused period.
Sections that by their nature should survive termination — including Sections 3, 7 (for retained records), 9, 11, 12, 13, and 14 — survive.
11. Disclaimer of warranties
TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SERVICE IS PROVIDED "AS IS" AND "AS AVAILABLE," WITHOUT WARRANTIES OF ANY KIND, WHETHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, INCLUDING ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND NON-INFRINGEMENT. GREGARIOUS DOES NOT WARRANT THAT THE SERVICE WILL BE UNINTERRUPTED, SECURE, OR ERROR-FREE, THAT DEFECTS WILL BE CORRECTED, OR THAT ANY GUIDANCE GENERATED BY THE SERVICE WILL BE ACCURATE OR SUITABLE FOR YOU.
Some jurisdictions do not allow the exclusion of certain warranties, so some of the above exclusions may not apply to you.
12. Limitation of liability
TO THE MAXIMUM EXTENT PERMITTED BY LAW:
- GREGARIOUS WILL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, EXEMPLARY, OR PUNITIVE DAMAGES, OR FOR LOST PROFITS, LOST DATA, OR LOSS OF GOODWILL, ARISING OUT OF OR RELATING TO THE SERVICE OR THESE TERMS, EVEN IF WE HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
- GREGARIOUS'S TOTAL AGGREGATE LIABILITY ARISING OUT OF OR RELATING TO THE SERVICE OR THESE TERMS WILL NOT EXCEED THE GREATER OF (A) THE AMOUNTS YOU PAID US FOR THE SERVICE IN THE TWELVE (12) MONTHS BEFORE THE EVENT GIVING RISE TO LIABILITY, OR (B) FIFTY US DOLLARS ($50).
These limitations apply regardless of the theory of liability (contract, tort, negligence, strict liability, or otherwise) and even if a limited remedy fails of its essential purpose. They do not apply to liability that cannot be limited by law, including liability for gross negligence, willful misconduct, or fraud.
13. Disputes: binding arbitration and class-action waiver
Please read this section carefully. It affects how disputes between you and Gregarious are resolved.
Talk to us first. Before starting a formal dispute, email legal@butter.yoga with a description of the problem. We will try to resolve it informally within 60 days. Most problems get fixed this way.
What arbitration means. Arbitration is a way of resolving disputes without going to court. A neutral arbitrator — not a judge or jury — hears both sides and makes a binding decision. It is usually faster and less formal than a lawsuit. It also means giving some things up: there is no jury, court review of the outcome is very limited, and you cannot join your claim with other people's claims.
The agreement. Except for the carve-outs below, you and Gregarious agree that any dispute arising out of or relating to the Service or these Terms will be resolved by binding individual arbitration administered by the American Arbitration Association (AAA) under its Consumer Arbitration Rules. The AAA's rules and filing instructions are at adr.org. The Federal Arbitration Act governs this section. For any consumer claim where the AAA's rules set fees, we will pay filing and arbitrator fees beyond the amount of your then-applicable small-claims court filing fee. The arbitration will be conducted in Delaware, or by video or phone, or in your home county if you prefer.
Carve-outs. Either party may bring a qualifying claim in small-claims court instead of arbitration. Either party may also seek injunctive relief in court to protect intellectual property or prevent unauthorized access to the Service.
Class-action waiver. You and Gregarious each waive the right to a jury trial and the right to participate in a class action, class arbitration, or other representative proceeding. Disputes will be arbitrated only on an individual basis. If this class-action waiver is found unenforceable as to a particular claim, that claim (and only that claim) must proceed in court, and the waiver applies to all remaining claims.
Your right to opt out. You can reject this arbitration agreement without any penalty. To opt out, email legal@butter.yoga within 30 days of the date you first accept these Terms, with your name and a statement that you opt out of the arbitration agreement (for example: "I opt out of arbitration"). If you opt out, disputes will be resolved in court under Section 14, and every other part of these Terms still applies.
Severability. If any part of this Section 13 (other than the class-action waiver, addressed above) is found unenforceable, the rest of it remains in effect.
14. Governing law and venue
These Terms are governed by the laws of the State of Delaware, without regard to its conflict-of-laws rules. Any dispute not subject to arbitration under Section 13 will be brought exclusively in the state or federal courts located in Delaware, and you consent to personal jurisdiction there. Nothing in this section overrides consumer protections you are entitled to under the laws of the state where you live.
15. Changes to these Terms
We may update these Terms from time to time. If a change is material, we will notify you before it takes effect — in the app, by email if we have your address, or both — and update the "Last updated" date above. Changes apply prospectively. If you keep using the Service after a change takes effect, you accept the updated Terms; if you do not agree, stop using the Service and cancel any subscription.
16. Miscellaneous
These Terms, together with the policies they incorporate, are the entire agreement between you and Gregarious about the Service. If any provision is found unenforceable, it will be modified to the minimum extent necessary or severed, and the rest remains in effect. Our failure to enforce a provision is not a waiver of it. You may not assign these Terms; we may assign them in connection with a merger, acquisition, or sale of assets, with notice to you. Notices to you may be provided in the app or by email.
17. Contact
Questions about these Terms: legal@butter.yoga
Support: support@butter.yoga
Privacy: privacy@butter.yoga
Gregarious, Inc.
Portions adapted from Common Paper standard agreements (CC BY 4.0) and the Basecamp open-source policies archive (CC BY 4.0).