Legal

NutriStack Terms of Service & End User License Agreement

Effective date: May 21, 2026

Last updated: May 21, 2026

These Terms of Service (the "Terms") are a binding legal agreement between you ("you" or "user") and Ben Williams and Drew Gassen ("NutriStack," "we," "us," or "our") governing your access to and use of the NutriStack mobile application for iOS and all related features, content, and services (together, the "App"). These Terms also function as the End User License Agreement (EULA) for the App and for the NutriStack Pro auto-renewing subscription.

1. Acceptance of These Terms

By downloading, installing, accessing, or using the App, you agree to be bound by these Terms and by our Privacy Policy, which is incorporated here by reference. If you do not agree, do not download, install, or use the App. If you use the App on behalf of an organization, you represent that you are authorized to accept these Terms on its behalf.

2. Eligibility and Age

You must be at least 13 years old (and at least 16 in regions where 16 is the minimum age of digital consent) to use the App. If you are under the age of majority in your jurisdiction, you may use the App only with the involvement and consent of a parent or legal guardian who agrees to these Terms. You represent that the information you provide to us is accurate and that you have the legal capacity to enter into these Terms.

3. License to Use the App

Subject to your compliance with these Terms, we grant you a limited, personal, non-exclusive, non-transferable, non-sublicensable, revocable license to download and use one copy of the App on an Apple-branded device that you own or control, solely for your own personal, non-commercial use, and as permitted by the Apple Media Services Terms and Conditions and the Usage Rules in the App Store Terms of Service.

You agree that you will not, and will not permit anyone else to:

copy, modify, translate, or create derivative works of the App;
reverse engineer, decompile, or disassemble the App, or attempt to derive its source code, except to the extent this restriction is prohibited by applicable law;
rent, lease, lend, sell, sublicense, distribute, or otherwise transfer the App or your access to it;
remove, alter, or obscure any proprietary notices in the App;
use the App in a way that violates these Terms or any applicable law.

All rights not expressly granted to you are reserved by us and our licensors. This license does not grant you ownership of the App.

4. Accounts and Your Responsibilities

An account is optional. You may use the App in a local-only mode without one. If you create an account (using Sign in with Apple, Google Sign-In, or an email and password), you are responsible for maintaining the confidentiality of your credentials and for all activity that occurs under your account. You agree to provide accurate information, to keep it current, and to notify us promptly of any unauthorized use of your account. You are responsible for the data you enter into the App and for keeping your own backups where appropriate.

5. Subscriptions and Billing (NutriStack Pro)

The App offers an optional auto-renewing subscription, NutriStack Pro, which unlocks premium features such as the AI supplement advisor and related stack-aware tools.

5.1 Pricing and subscription terms

NutriStack Pro Monthly: US$6.99 per month.
NutriStack Pro Yearly: US$49.99 per year.

Prices are stated in U.S. dollars and may vary by region and currency; the actual price, currency, and any applicable taxes are shown in the App and on the App Store at the time of purchase. We may change subscription prices on a prospective basis; any price change will apply only after notice and will not take effect for an existing subscription period that has already been paid.

5.2 Billing through Apple

All NutriStack Pro purchases are processed by Apple through your Apple Account using Apple's In-App Purchase system. We do not process payments and do not receive your payment card details. Payment is charged to your Apple Account at confirmation of purchase.

5.3 Automatic renewal

NutriStack Pro is an auto-renewing subscription. It automatically renews for the same period (monthly or yearly) at the then-current price unless you cancel it. Your Apple Account will be charged for renewal within 24 hours before the end of the current period. Renewal continues until you cancel.

5.4 How to cancel

You can cancel at any time, and you manage your subscription through Apple, not through us. To cancel, open your device's Settings → [your name] → Subscriptions, select NutriStack Pro, and turn off auto-renewal. To avoid being charged for the next period, you must cancel at least 24 hours before the end of the current period. After cancellation, you keep Pro access until the end of the period you have already paid for.

5.5 Refunds

Refunds are handled by Apple, not by us. Because Apple processes all billing, we generally cannot grant refunds. Except where required by applicable law, payments are non-refundable, and there are no refunds or credits for partially used periods. Refund requests must be submitted to Apple (for example through reportaproblem.apple.com). Apple's decision on a refund request is final.

5.6 Account deletion does not cancel billing

Deleting your NutriStack account within the App does not cancel an active App Store subscription. You must cancel the subscription separately through Apple as described in Section 5.4.

6. Acceptable Use

You agree not to use the App to:

violate any applicable law or regulation, or infringe the rights of others;
attempt to gain unauthorized access to the App, our servers, other users' accounts, or any connected systems;
interfere with, disrupt, overload, or circumvent the security, rate limits, or integrity protections of the App or its services;
use the App, including the AI advisor, to obtain guidance on the dosing, timing, stacking, sourcing, or use of recreational or federally controlled substances, or for any unlawful, harmful, or abusive purpose;
upload or transmit malicious code, or use automated means to access the App in a manner not permitted by these Terms;
misrepresent your identity or your affiliation with any person or entity.

We may suspend or terminate access for conduct that violates this section.

7. Medical Disclaimer (Important)

NutriStack is an informational and organizational tool. It is not a medical service and does not provide medical advice.

The App helps you organize, schedule, and track supplements and wellness data and provides general educational content. It is not a medical device, a healthcare provider, a pharmacy, or a telehealth service. Nothing in the App, including supplement information, interaction and timing flags, bundled research summaries, biomarker reference ranges, personalized insights, or AI advisor responses, is medical advice, a diagnosis, a treatment recommendation, or a substitute for professional medical care.

The AI advisor is not a clinician. It is an automated tool that generates responses using a third-party AI model. Its output may be incomplete, outdated, or incorrect, and it must not be relied upon for any medical decision.

Consult a professional before changing anything. Always consult a physician, pharmacist, or other qualified healthcare provider before starting, stopping, combining, or changing the dose of any supplement, vitamin, or medication, especially if you have a medical condition, take prescription or over-the-counter medications, are scheduled for surgery, or are pregnant or nursing. Supplements can interact with medications and with each other.

Statements about dietary supplements have not been evaluated by the U.S. Food and Drug Administration or any equivalent authority, and the App is not intended to diagnose, treat, cure, or prevent any disease.

Emergencies. Do not use the App for medical emergencies. Never disregard professional medical advice, or delay seeking it, because of something you read or generated in NutriStack. If you think you may have a medical emergency, call your doctor or your local emergency number immediately.

You are solely responsible for any decisions you make about supplements, medications, or your health. You use the App and its content at your own risk.

8. User Content

"User Content" means the information you enter into the App, for example, your profile, your supplement stack, dosages and notes, intake and wellness logs, purchase records, and messages you send to the AI advisor. You retain ownership of your User Content. You grant us a limited license to host, store, process, transmit, and display your User Content solely as necessary to operate and provide the App's features to you (including cloud backup and sync, and routing AI requests as described in the Privacy Policy). You are responsible for your User Content and represent that you have the right to provide it.

9. Intellectual Property

The App and all of its content, design, text, graphics, logos, software, and the bundled educational and research material (excluding your User Content and third-party content) are owned by Ben Williams and Drew Gassen or their licensors and are protected by intellectual property and other laws. Except for the limited license in Section 3, these Terms do not grant you any right, title, or interest in the App or our intellectual property.

Brand names, product names, certification names, research citations, publication titles, service provider names, and other third-party identifiers remain the property of their respective owners. NutriStack uses them only for identification, source attribution, educational comparison, or app functionality. Unless expressly stated, no third-party owner sponsors, endorses, or is affiliated with NutriStack.

10. Third-Party Services and Content

The App relies on third-party services, including Apple, Google/Firebase, and OpenAI, and may reference third-party research and product information. We are not responsible for third-party services or content, which are governed by their own terms and policies. Your use of those services is at your own risk.

The App and website may display source links and review-status labels for research, product, brand, and certification records. A source link or pending-review label is not an endorsement, medical recommendation, certification, warranty, or statement that the linked third party approves NutriStack. See Third-Party Notices for current attribution, trademark, open-source, and service-provider notices.

11. Disclaimer of Warranties

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, THE APP AND ALL CONTENT AND FEATURES ARE PROVIDED ON AN "AS IS" AND "AS AVAILABLE" BASIS, WITHOUT WARRANTIES OF ANY KIND, WHETHER EXPRESS, IMPLIED, OR STATUTORY. WE DISCLAIM ALL IMPLIED WARRANTIES, INCLUDING WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND NON-INFRINGEMENT.

WE DO NOT WARRANT THAT THE APP WILL BE UNINTERRUPTED, ERROR-FREE, SECURE, OR ACCURATE, THAT DEFECTS WILL BE CORRECTED, OR THAT ANY CONTENT, INCLUDING AI-GENERATED RESPONSES, RESEARCH SUMMARIES, INTERACTION FLAGS, OR BIOMARKER REFERENCE INFORMATION, IS COMPLETE, RELIABLE, CURRENT, OR SUITABLE FOR YOUR CIRCUMSTANCES. YOU ASSUME ALL RISK FOR YOUR USE OF THE APP. 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 APPLICABLE LAW, IN NO EVENT WILL Ben Williams AND Drew Gassen, THEIR OWNERS, OFFICERS, EMPLOYEES, AGENTS, OR LICENSORS BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, EXEMPLARY, OR PUNITIVE DAMAGES, OR FOR ANY LOSS OF PROFITS, DATA, GOODWILL, OR OTHER INTANGIBLE LOSSES, OR FOR ANY PERSONAL INJURY OR HEALTH OUTCOME, ARISING OUT OF OR RELATING TO YOUR USE OF, OR INABILITY TO USE, THE APP OR ITS CONTENT, WHETHER BASED ON WARRANTY, CONTRACT, TORT (INCLUDING NEGLIGENCE), OR ANY OTHER LEGAL THEORY, EVEN IF WE HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, OUR TOTAL AGGREGATE LIABILITY FOR ALL CLAIMS ARISING OUT OF OR RELATING TO THE APP OR THESE TERMS WILL NOT EXCEED THE GREATER OF (A) THE TOTAL AMOUNT YOU PAID TO US (OR THROUGH APPLE FOR THE APP) IN THE TWELVE (12) MONTHS BEFORE THE EVENT GIVING RISE TO 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. NOTHING IN THESE TERMS LIMITS LIABILITY THAT CANNOT BE LIMITED UNDER APPLICABLE LAW.

13. Indemnification

To the maximum extent permitted by applicable law, you agree to indemnify, defend, and hold harmless Ben Williams and Drew Gassen, their owners, officers, employees, agents, and licensors from and against any claims, liabilities, damages, losses, and expenses (including reasonable legal fees) arising out of or related to your User Content, your use or misuse of the App, your violation of these Terms, or your violation of any law or the rights of any third party.

14. Termination

You may stop using the App at any time and may delete your account within the App. We may suspend or terminate your access to the App or your account, with or without notice, if you violate these Terms or if we reasonably believe it is necessary to protect the App, other users, or third parties. Upon termination, the license in Section 3 ends. Sections that by their nature should survive termination, including Sections 7 through 13 and 15 through 18, will survive. Terminating your account does not automatically cancel an App Store subscription (see Section 5.6).

15. Governing Law and Dispute Resolution

These Terms and any dispute arising out of or relating to them or the App are governed by the laws of the State of Texas, USA, without regard to its conflict-of-law rules. Subject to any mandatory consumer-protection rights you have under the laws of your country of residence, you and we agree that the courts located in the State of Texas, USA will have jurisdiction over any disputes that are not otherwise resolved.

16. Apple-Specific Terms

This Section 16 applies because you obtained the App from the Apple App Store. In the event of any conflict between this section and the rest of these Terms, this section controls with respect to your use of the App on Apple devices.

This agreement is between you and us, not Apple. These Terms are concluded between you and Ben Williams and Drew Gassen only, and not with Apple Inc. ("Apple"). We, not Apple, are solely responsible for the App and its content.
Scope of license. The license granted to you for the App is limited to a non-transferable license to use the App on any Apple-branded products that you own or control, as permitted by the Usage Rules in the Apple Media Services Terms and Conditions.
Maintenance and support. We, not Apple, are solely responsible for providing any maintenance and support services for the App. Apple has no obligation to furnish any maintenance and support services for the App.
Warranty. We are solely responsible for any product warranties, whether express or implied by law, to the extent not effectively disclaimed. If the App fails to conform to any applicable warranty, you may notify Apple, and Apple may refund the purchase price (if any) for the App; to the maximum extent permitted by applicable law, Apple has no other warranty obligation whatsoever with respect to the App.
Product claims. We, not Apple, are responsible for addressing any claims by you or any third party relating to the App or your possession and/or use of it, including product liability claims, claims that the App fails to conform to any applicable legal or regulatory requirement, and claims arising under consumer protection, privacy, or similar legislation.
Intellectual property claims. In the event of any third-party claim that the App or your possession and use of it infringes that third party's intellectual property rights, we, not Apple, will be solely responsible for the investigation, defense, settlement, and discharge of any such claim.
Legal compliance. You represent and warrant that you are not located in a country subject to a U.S. Government embargo or designated as a "terrorist supporting" country, and that you are not listed on any U.S. Government list of prohibited or restricted parties.
Apple as third-party beneficiary. You and we acknowledge and agree that Apple, and Apple's subsidiaries, are third-party beneficiaries of these Terms, and that, upon your acceptance of these Terms, Apple will have the right (and will be deemed to have accepted the right) to enforce these Terms against you as a third-party beneficiary thereof.

17. Changes to These Terms

We may update these Terms from time to time. When we do, we will revise the "Last updated" date at the top of this page and, for material changes, provide a more prominent notice within the App or by other appropriate means. Your continued use of the App after updated Terms take effect means you accept the changes. If you do not agree to the updated Terms, you must stop using the App.

18. General

These Terms, together with the Privacy Policy, are the entire agreement between you and us regarding the App and supersede any prior agreements. If any provision is found unenforceable, the remaining provisions will remain in full effect. Our failure to enforce a provision is not a waiver of it. You may not assign these Terms without our consent; we may assign them in connection with a merger, acquisition, or sale of assets. Headings are for convenience only.

19. Contact Us

If you have questions about these Terms, contact us at:

Email: privacy@nutristackapp.com
Entity: Ben Williams and Drew Gassen
Address: 325 Turtle Creek Dr, McKinney, TX 75072, USA