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Terms of Service

Version 1.3 · Effective August 20, 2026

These Terms of Service ("Terms") govern your access to and use of the BYGG mobile and web application (the "App" or "Service").

By creating an account, checking the agreement box at sign-up, or using the App, you ("you," "your," or "User") enter into a legally binding agreement with Zenith Software LLC, a Missouri limited liability company doing business as BYGG ("BYGG," "we," "our," or "us").

IF YOU DO NOT AGREE TO THESE TERMS, DO NOT CREATE AN ACCOUNT OR USE THE APP.

These Terms incorporate by reference our Privacy Policy and our Assumption of Risk, Waiver and Release of Liability (the "Waiver"). You must accept all three to use the Service.

1. Eligibility

1.1 Age. You must be at least eighteen (18) years old to create an account or use the App. The App asks for your date of birth during setup and will refuse to generate a training program or nutrition targets for anyone who reports being under eighteen.

1.2 This is not age verification. The date of birth you provide is self-reported. We do not verify it against any document, database, or third-party service. By using the App you represent and warrant that you are eighteen years of age or older and that the date of birth you provided is accurate.

1.3 Capacity. You represent that you have the legal capacity to enter into this agreement and that you are not barred from using the Service under the laws of the United States or the state in which you reside.

1.4 One account per person. You may not create multiple accounts, share your account credentials, or permit another person to use your account.

2. What the Service Is

2.1 Description. BYGG generates individualized resistance-training programs and general nutrition targets from information you provide about your training history, schedule, available equipment, injuries, and goals. The App delivers those programs session by session, records what you log, and adjusts subsequent weeks based on your recorded performance.

2.2 The Service is software, not a person. Programs are produced by a deterministic rules engine encoding published exercise-science research.

No individual reviews your program before it reaches you. No personal trainer, physician, dietitian, physical therapist, or other licensed professional supervises your use of the App or evaluates your individual circumstances.

2.3 The Service is not medical, physical-therapy, or dietetic care. Nothing in the App is medical advice, diagnosis, treatment, physical therapy, or medical nutrition therapy. The training programs and nutrition targets are general fitness and educational information. They do not account for medical conditions, medications, pregnancy, injuries beyond what you disclose, or any other individual health circumstance.

2.4 Nutrition targets are estimates. Calorie and macronutrient figures are produced by published predictive equations that carry meaningful individual error. The App presents them as starting estimates to be corrected by observed changes in your body weight over time. They are not prescriptions, are not individualized nutrition counseling, and are not appropriate for anyone managing a medical condition, who is pregnant or breastfeeding, or who has a history of disordered eating.

2.5 Consult a physician first. You should obtain clearance from a qualified health-care provider before beginning any exercise or nutrition program, including this one. This is particularly important if you are over 35, have been sedentary, are pregnant or may become pregnant, are breastfeeding, or have any cardiovascular, metabolic, orthopedic, or other medical condition.

2.6 We do not guarantee results. We make no representation that use of the App will produce any particular change in strength, muscle mass, body weight, body composition, mobility, or any other outcome. Results depend on factors outside our control, including your consistency, sleep, nutrition, genetics, stress, and prior training history.

3. Your Responsibilities

3.1 Accurate information. The App's output depends entirely on what you tell it. You agree to provide accurate and complete information about your age, body weight, height, training experience, injuries, equipment, and health status, and to keep that information current.

3.2 Disclose your injuries. The App adjusts exercise selection based on injuries you report. It cannot account for an injury you do not disclose. If you develop a new injury or a condition changes, you agree to update your profile before continuing.

3.3 Stop if something hurts. You agree to discontinue any exercise that causes pain, dizziness, shortness of breath, chest discomfort, or other symptoms of distress, and to seek medical attention where appropriate. You are responsible for your own safety at all times. No prescription in the App overrides your own judgment about what is safe for your body on a given day.

3.4 Proper form and equipment. You are responsible for performing exercises with proper technique, for inspecting equipment before use, for training in a safe environment, and for using appropriate safety measures including spotters, collars, safety pins, and equipment appropriate to the load being lifted. BYGG does not manufacture, own, inspect, or maintain any equipment you use.

3.5 Your capability. You are solely responsible for determining whether any exercise, load, or program is appropriate for your fitness level and health status, regardless of what the App prescribes.

3.6 Account security. You are responsible for maintaining the confidentiality of your credentials and for all activity under your account. Notify us at support@byggfitness.app if you suspect unauthorized access.

4. Subscription, Billing, and Automatic Renewal

4.1 Free trial. New accounts receive a seven (7) day free trial. A valid payment method is required to begin the trial. You will not be charged during the trial period.

4.2 Automatic conversion. UNLESS YOU CANCEL BEFORE THE TRIAL ENDS, YOUR SUBSCRIPTION WILL AUTOMATICALLY BEGIN ON THE EIGHTH (8TH) DAY AND YOUR PAYMENT METHOD WILL BE CHARGED $24.99.

4.3 Recurring charges. YOUR SUBSCRIPTION AUTOMATICALLY RENEWS EVERY MONTH AND YOUR PAYMENT METHOD WILL BE CHARGED $24.99 PER MONTH UNTIL YOU CANCEL. Charges recur on the same calendar day each month corresponding to the date your paid subscription began.

4.4 Payment processing. Payments are processed by Stripe, Inc. We do not receive or store your full card number. Your use of Stripe is subject to Stripe's own terms and privacy policy.

4.5 How to cancel. You may cancel at any time. No advance notice is required.

  • in the App, under Settings, then Manage subscription; or
  • by emailing support@byggfitness.app.

Cancellation takes effect at the end of your current paid term. We will send you a confirmation once it is processed.

4.6 No refunds. SUBSCRIPTION FEES ARE PAID IN ADVANCE AND ARE NON-REFUNDABLE, except as provided in Section 4.7 for a price increase. We do not provide refunds or prorated credits for partial billing periods, unused time, or cancellations made mid-cycle. Your access continues until the end of the term you have already paid for.

4.7 Price changes. We may change subscription pricing on thirty (30) days' notice sent to the email address on your account. The notice will state the new price, the date it takes effect, and how to cancel. You may cancel at any time before that date and will never be charged the new price. Continued use after the notice period constitutes acceptance of the new price. If you are charged an increased price and did not want it, you may cancel within fourteen (14) days of that first increased charge and we will refund it on a prorated basis.

4.8 Promotional codes. We may offer extended trials or promotional pricing at our discretion. Promotional terms are stated at the time of the offer, are not transferable, have no cash value, and may be withdrawn or modified at any time before redemption.

4.9 Failed payments. If a charge fails, we may retry it, suspend your access, or terminate your subscription. You remain responsible for amounts owed.

4.10 Taxes. Stated prices exclude applicable sales or use taxes, which will be added where required.

5. What You May and May Not Do

5.1 License. Subject to these Terms and your payment of applicable fees, we grant you a limited, personal, non-exclusive, non-transferable, revocable license to use the App for your own individual training.

5.2 Restrictions. You may not:

  • use the App to train, coach, or program for any other person, whether paid or unpaid, or otherwise use the Service to provide services to third parties;
  • copy, reproduce, distribute, publish, or resell any program, exercise description, coaching cue, video, image, or other content from the App;
  • reverse engineer, decompile, or attempt to derive the source code, algorithms, or underlying logic of the Service;
  • scrape, harvest, or systematically extract data from the Service by automated means;
  • share your account or credentials with any other person;
  • interfere with, disrupt, or attempt to gain unauthorized access to the Service or its infrastructure; or
  • use the Service in violation of any applicable law.

5.3 Consequence. We may suspend or terminate your account immediately and without refund for any violation of this section.

6. Intellectual Property

6.1 Ours. The App, including its programming engine, exercise library, coaching content, written explanations, design, and all associated intellectual property, is owned by Zenith Software LLC and protected by United States and international law. Nothing in these Terms transfers any ownership to you.

6.2 Third-party content. Certain exercise demonstration media is licensed from third parties. That media is subject to the licensor's terms and may not be extracted, redistributed, or used outside the App.

6.3 Yours. You retain ownership of the information you enter. You grant us a worldwide, royalty-free, non-exclusive license to store, process, and use that information as necessary to operate the Service and as described in our Privacy Policy, including in aggregated and de-identified form to improve the Service.

6.4 Progress photos are excluded from Section 6.3. The license in Section 6.3 does not apply to progress photos. We store them, and we show them back to you. We do not use them for any other purpose — including in aggregated or de-identified form, and including to improve the Service — unless you give permission for a specific photo. You may withdraw that permission at any time by deleting the photo.

7. Assumption of Risk and Waiver

7.1 Separate agreement. AS A CONDITION OF USING THE SERVICE, YOU MUST ACCEPT A SEPARATE ASSUMPTION OF RISK, WAIVER AND RELEASE OF LIABILITY. THAT DOCUMENT CONTAINS IMPORTANT PROVISIONS, INCLUDING A RELEASE OF BYGG FROM LIABILITY FOR INJURIES ARISING FROM YOUR USE OF THE SERVICE, INCLUDING CLAIMS BASED ON OUR OWN NEGLIGENCE. PLEASE READ IT CAREFULLY.

7.2 Incorporation. The Waiver is incorporated into these Terms by reference and forms part of the agreement between us.

8. Disclaimer of Warranties

8.1 THE SERVICE IS PROVIDED "AS IS" AND "AS AVAILABLE," WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. TO THE MAXIMUM EXTENT PERMITTED BY LAW, WE DISCLAIM ALL WARRANTIES INCLUDING MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND NON-INFRINGEMENT.

8.2 We do not warrant that the Service will be uninterrupted, timely, secure, or error-free; that any defect will be corrected; that the programs or targets generated will be suitable, safe, or effective for you; or that any information in the App is accurate, complete, or current.

8.3 Some jurisdictions do not allow the exclusion of implied warranties. Where that is the case, the exclusions above apply to the fullest extent permitted.

9. Limitation of Liability

9.1 TO THE MAXIMUM EXTENT PERMITTED BY MISSOURI LAW, ZENITH SOFTWARE LLC, ITS MEMBERS, MANAGERS, OFFICERS, EMPLOYEES, CONTRACTORS, AGENTS, SUCCESSORS, AND ASSIGNS SHALL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, CONSEQUENTIAL, SPECIAL, PUNITIVE, OR EXEMPLARY DAMAGES, INCLUDING WITHOUT LIMITATION PERSONAL INJURY, PAIN AND SUFFERING, EMOTIONAL DISTRESS, LOSS OF INCOME OR PROFITS, MEDICAL EXPENSES, LOSS OF DATA, OR BUSINESS INTERRUPTION, ARISING OUT OF OR RELATED TO YOUR USE OF THE SERVICE, WHETHER BASED IN CONTRACT, TORT, NEGLIGENCE, STRICT LIABILITY, OR OTHERWISE, EVEN IF WE HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

9.2 IN NO EVENT SHALL OUR TOTAL AGGREGATE LIABILITY FOR ANY CLAIM ARISING OUT OF OR RELATING TO THESE TERMS OR THE SERVICE EXCEED THE GREATER OF (A) THE TOTAL AMOUNT YOU PAID US IN THE TWELVE (12) MONTHS IMMEDIATELY PRECEDING THE EVENT GIVING RISE TO THE CLAIM, OR (B) ONE HUNDRED DOLLARS ($100.00).

9.3 Nothing in these Terms excludes or limits liability for gross negligence, willful misconduct, fraud, or any liability that cannot be excluded under applicable law.

10. Indemnification

You agree to defend, indemnify, and hold harmless Zenith Software LLC and its members, managers, officers, employees, contractors, agents, successors, and assigns from any claim, demand, loss, liability, damage, or expense (including reasonable attorneys' fees) arising out of:

  • your use of the Service;
  • any injury or damage you sustain or cause while performing any exercise;
  • inaccurate or incomplete information you provided, including any failure to disclose an injury or medical condition;
  • your violation of these Terms or of any applicable law; or
  • your violation of any third-party right.

11. Termination

11.1 By you. You may cancel your subscription at any time under Section 4.5, and may delete your account entirely from within the App at any time.

11.2 By us. We may suspend or terminate your access at any time, with or without notice, for violation of these Terms, for non-payment, or if we discontinue the Service.

11.3 Effect. On termination your license ends immediately. Account deletion is described in our Privacy Policy. Sections 6, 7, 8, 9, 10, 12, and 13 survive termination.

12. Governing Law and Disputes

12.1 Governing law. These Terms are governed by the laws of the State of Missouri, without regard to its conflict-of-laws principles.

12.2 Venue. Any claim arising out of or relating to these Terms or the Service must be brought exclusively in the state or federal courts located in Platte County, Missouri, and you consent to the personal jurisdiction of those courts.

12.3 Time limit. Any claim must be brought within one (1) year after it arises, to the extent permitted by law.

13. General

13.1 Changes to these Terms. We may modify these Terms. Material changes will be notified by email or in-app notice at least thirty (30) days before taking effect. Continued use after the effective date constitutes acceptance. If you do not agree, your remedy is to cancel and stop using the Service.

13.2 Entire agreement. These Terms, together with the Privacy Policy and the Waiver, constitute the entire agreement between you and us regarding the Service.

13.3 Severability. If any provision is held unenforceable, that provision shall be limited or eliminated to the minimum extent necessary and the remainder shall remain in full force.

13.4 No waiver. Our failure to enforce any provision is not a waiver of it.

13.5 Assignment. You may not assign these Terms. We may assign them in connection with a merger, acquisition, or sale of assets.

13.6 Force majeure. We are not liable for any failure or delay caused by circumstances beyond our reasonable control.

14. Contact

Zenith Software LLC dba BYGG 905 McGee St Suite 167 Kansas City, MO 64106

Email: support@byggfitness.app

By creating an account, you acknowledge that you have read, understood, and agree to be bound by these Terms of Service, the Privacy Policy, and the Assumption of Risk, Waiver and Release of Liability.