Terms of Service

Version 1.0 · Last updated: August 25, 2026 · Effective: September 1, 2026

In case of any discrepancy, the Spanish version (Términos y Condiciones) prevails.

1. Who provides the service


Provider	Alejandro Sánchez Saucedo, sole proprietor, Mexico
Address	Prolongación Matamoros #100, Eulalio Gutiérrez, C.P. 25903, Ramos Arizpe, Coahuila, Mexico
Contact	[email protected]
Brand	Zanza (trademark application pending before IMPI; formerly "RoadToFit" / "Road")

2. What you accept

By creating an account, accepting an invitation, or using the app or dashboard, you accept these Terms and the Privacy Policy, which forms an integral part of them. If you do not agree, do not use the platform.

3. Eligibility

You must be 18 or older. The platform processes health data, body photographs, and lab results; it is neither designed nor permitted for minors.
You must have legal capacity to enter into a contract.
You must provide truthful, current information. Your age, sex, weight, height, and health history determine how your training load is computed: false data produces the wrong prescription, and that is your responsibility.
You must not have been previously suspended from the platform.

4. What Zanza is (and is not)

Zanza is software for fitness professionals to design, assign, and monitor training programs, and for their athletes to execute and log them.

4.1 Zanza is NOT

❌ Not a medical, diagnostic, or treatment service.
❌ Not a medical device, and it does not claim to be. The figures it shows (estimated 1RM, TSS, HRV, progress indices, zones) are estimates for training purposes, computed with formulas from the sports-science literature — not clinical measurements.
❌ Not your coach. Your program is decided by the professional you hired, or by you in "on my own" mode.
❌ Not a substitute for a physician, physiotherapist, or dietitian.

4.2 Account types

Athlete (trains with a professional), Professional (trainer, nutritionist, or organization using the dashboard), and On my own / self-coached (their own professional, with both surfaces).

5. The athlete–professional relationship

The coaching contract is between you and your professional. Zanza is not a party to it. We provide the software; someone else provides and charges for the professional service.
We do not verify the credentials, certifications, degrees, or experience of professionals on the platform, and we neither supervise, approve, nor review the programs they design. Choosing your professional is your responsibility; the quality of the program is theirs.
We are not liable for training or nutrition plans, advice, instructions, omissions, or conduct of any professional.
Payments to your professional are strictly between the two of you. The platform does not charge, receive, hold, or refund that money: it only records what your coach marks as paid. Billing disputes are resolved directly between you.
When the relationship ends, your professional stops receiving new data from you but keeps the record of the period during which they trained you.
Your professional may contact you through external channels (WhatsApp, email). Those communications are governed by those services' terms, not ours.

6. Health, risk, and disclaimer

READ THIS SECTION IN FULL. It is the most important part of this document.

6.1 Consult a physician first

Before starting or substantially changing an exercise program, consult a physician, especially if you have or suspect: cardiovascular disease, hypertension, diabetes, asthma, epilepsy, a recent injury or surgery, joint or bone pain, an eating disorder, pregnancy or postpartum status, or if you take medication affecting heart rate, blood pressure, or balance.

6.2 Assumption of risk

Physical training carries inherent risks, including but not limited to muscle, joint, bone, and tendon injuries, dizziness, fainting, heat stroke, rhabdomyolysis, heart attack and, in extreme cases, death. By using the platform you knowingly and voluntarily assume those risks.

6.3 Stop exercising

Stop immediately and seek medical attention if you feel chest pain, disproportionate shortness of breath, dizziness, blurred vision, palpitations, sharp pain, or any symptom you do not recognize. No number in the app — no plan, no goal, no streak — is worth more than that.

6.4 Nothing the app shows is medical advice

Plans, percentages, 1RM estimates, heart-rate zones, suggested loads, lab reference ranges, and AI-assisted messages are training information, not medical advice. Lab reference ranges are indicative only, and only a physician can interpret your results.

6.5 Logging discomfort is not requesting medical help

The discomfort and pain-mapping feature exists so your coach can adjust your program. It is not an emergency channel, it is not monitored by healthcare staff, and nobody guarantees it will be read in time. In an emergency, call emergency services.

6.6 Device data

Data arriving from your watch, heart-rate strap, trainer, or your phone's health aggregator is produced by that device, not by us. Its accuracy depends on the manufacturer. We do not warrant its precision and do not use it for diagnostic purposes.

7. Your account

You are responsible for keeping your password confidential and for everything that happens under your account. An account belongs to one person only — do not share or transfer it. Notify [email protected] immediately if you suspect unauthorized access.

8. Acceptable use

You may not: use the platform for anything unlawful, or to provide health services without the license your jurisdiction requires; upload another person's content without their consent — especially photographs or videos of third parties; upload sexual, violent, discriminatory, defamatory, or infringing content; impersonate anyone or misrepresent your professional credentials; access (or attempt to access) data of people you have no active relationship with on the platform; scrape, reverse-engineer, decompile, or security-test the platform without our written permission; overload the infrastructure, evade rate limits, or interfere with the service; or resell, sublicense, or white-label the platform absent a written agreement.

We may suspend or terminate accounts that breach this section, without refund, and without prior notice where the breach is serious.

9. Your content

Your content is yours. Photos, videos, notes, measurements, and logs you upload remain your property.
You grant us a limited, non-exclusive, revocable license, sublicensable only to our infrastructure providers, solely to store, process, and display that content to you — and to your professional when you authorize it — for the purpose of providing the service. This license ends when you delete the content or your account, except for backups, which rotate as described in the Privacy Policy.
We do not use your content for advertising, to train AI models, or to license it to third parties commercially.
Technique videos are deleted automatically after ~90 days. They are a correction tool, not a permanent archive. Save a copy on your device if you want to keep one.
You may delete your content at any time from the app.

10. Our content and intellectual property

The software, design, the Zanza brand, texts, the structure of the exercise, test, and measurement catalogs, the coaching guides, and the calculation models are ours or our licensors', protected by intellectual property law. We grant you a personal, limited, revocable, non-exclusive, non-transferable license to use the platform under these Terms.

Third-party content: the catalog includes reference illustrations from open, public-domain databases, and assessment protocols described in our own words from scientific and reference literature, cited where appropriate. Rights in the original works belong to their authors.

Professional's content: the programs, templates, questionnaires, and libraries a professional creates in their account are theirs. We only host them and show them to the athletes they designate.

11. Third-party services

Apple Health and Health Connect are additionally subject to Apple's and Google's terms; data read from them requires your explicit OS permission, and sharing it with your coach requires an additional in-app toggle. Sign-in with Google or Apple is also governed by their terms. WhatsApp messages travel under Meta's terms. Bluetooth sensors depend on their manufacturer.

We are not responsible for the operation, availability, or practices of these third parties.

12. AI assistance

The platform may offer professionals a feature that drafts follow-up messages from an athlete's weekly figures.

It is drafting assistance, not professional judgment. A person reviews, edits, and decides to send; nothing is ever sent automatically.
It does not produce medical advice and is explicitly instructed not to.
A language model can be wrong. The professional is responsible for what they send, exactly as if they had written it by hand.
The AI provider receives only the athlete's nickname and weekly figures — never their full name, email, or phone.

13. Pricing, payments, and subscriptions

The platform is currently free for professionals and athletes.
We may in future charge professionals a subscription, with at least 30 days' notice. No price change applies retroactively.
Athletes never pay Zanza. What an athlete pays for is their professional's service, outside the platform (§5.4).
If a professional later falls behind on a subscription, their account is expected to become read-only, and their athletes will keep access through the end of the period already paid for. An athlete's data is never deleted because their professional stopped paying.
Where charges exist, we will issue the tax receipts required by applicable law.

14. Availability, changes, and product status

The platform is under active development. It may contain bugs, and some features are experimental or marked "coming soon". We do not warrant it is error-free or uninterrupted.
We may modify, suspend, or withdraw features. If we withdraw a feature your core use depends on, we will give reasonable prior notice.
We take verified daily backups, but we recommend you keep your own copy of anything critical to you.
We may perform scheduled maintenance, aiming to give notice when it affects the service.

15. Warranties and limitation of liability

15.1 No implied warranties

To the maximum extent permitted by applicable law, the platform is provided "as is" and "as available", without warranties of merchantability, fitness for a particular purpose, accuracy of calculations, or training results. We do not guarantee any physical, athletic, or body-composition outcome.

15.2 Cap on liability

To the maximum extent permitted by law, we are not liable for indirect, incidental, special, punitive damages, or lost profits. Our total aggregate liability is limited to the greater of (a) what you paid us in the 12 months preceding the event, or (b) MXN $2,000.00 if you have paid us nothing.

15.3 What this cap does NOT cover

Nothing in these Terms excludes or limits our liability for willful misconduct, gross negligence, fraud, death, or personal injury caused by our negligence, nor any non-waivable right the law grants you.

If you are a consumer, you keep every right granted to you by Mexico's Federal Consumer Protection Law or by the consumer legislation of your country of residence, including EU consumer rules where applicable. This section applies only as far as that legislation allows.

16. Indemnification

You agree to hold us harmless from third-party claims arising from (i) your breach of these Terms; (ii) content you upload; and (iii) if you are a professional, the services you provide to your athletes through the platform and your processing of their personal data.

17. Suspension and termination

You may close your account at any time. Write to [email protected] from your account email and we will delete it within 30 calendar days; details at https://zanzahq.com/eliminar-cuenta.
We may suspend or close your account if you breach these Terms, if your use endangers other people or the platform, or if the law requires it.
On closure, you lose access and your data is deleted or anonymized per the Privacy Policy, except what we must retain by law. Your professional keeps the record of the period they trained you.
Clauses 6, 9.2, 10, 15, 16, and 18 survive termination.

18. Governing law and disputes

These Terms are governed by the laws of the United Mexican States.
Before going to court, both parties will attempt to resolve the matter in good faith by writing to [email protected]. We commit to replying within 30 calendar days.
The parties submit to the competent courts of Ramos Arizpe, Coahuila, waiving any other venue.
If you are a consumer, this clause does not deprive you of the right to sue in the courts of your domicile or to approach your consumer protection authority (in Mexico, PROFECO).

19. General

Severability; no waiver; you may not assign these Terms without our consent, while we may assign them in a reorganization or sale with prior notice; changes will be published at https://zanzahq.com/terms with version and date, with at least 15 calendar days' notice for material changes; and these Terms are published in Spanish and English — the Spanish version prevails in case of discrepancy.

Annex A — Additional terms for professionals

Applies in addition to everything above if you use Zanza to train other people.

A.1 Your professional standing. You represent that you hold the training, certification, license, or authorization your jurisdiction requires. We do not verify this; the responsibility, and the consequences of practicing without it, are entirely yours.

A.2 Your responsibility for the program. You are solely responsible for the design, progression, load, and safety of the programs you assign, and for adapting them to your athletes' injuries and health conditions. The platform calculates and warns; you decide.

A.3 Data protection — you are an independent controller. You must: give each athlete your own privacy notice; obtain their express consent before capturing sensitive data (health, measurements, lab work, body photographs); upload only what you need; not register anyone under 18; not upload data about people who are not your athletes; handle rights requests addressed to you; notify us within 24 hours of any suspected unauthorized access; and protect your credentials — your account opens the health record of every athlete you train. See the Data Protection Annex for Professionals.

A.4 Charging your athletes. You charge on your own account and under your own tax regime. The platform only keeps your ledger. You are responsible for your tax obligations and for issuing the receipts required. We are not a payment intermediary and we withhold no taxes.

A.5 Public directory. If you enable your public profile, you agree that your name, title, bio, specialties, and photo are shown publicly. You may turn it off at any time. What you publish must be truthful: do not advertise certifications you do not hold and do not promise guaranteed results.

A.6 Messaging. When you use the messaging feature — with or without AI assistance — you are responsible for the content sent and for complying with applicable commercial communications rules.

Annex B — App store specific terms

B.1 Apple App Store

These Terms are concluded between you and us, not with Apple. We, not Apple, are solely responsible for the app and its content.
Apple has no obligation to furnish any maintenance or support for the app.
If the app fails to conform to any applicable warranty, you may notify Apple, and Apple will refund the purchase price (if any); to the maximum extent permitted by law, Apple has no other warranty obligation whatsoever.
Apple is not responsible for addressing any claims by you or a third party relating to the app, including product liability, regulatory compliance, or consumer protection claims.
If a third party claims the app infringes their intellectual property rights, we, not Apple, are responsible for the defense and resolution.
You represent that you are not located in a country subject to a U.S. Government embargo and are not listed on any U.S. Government list of prohibited or restricted parties.
Apple and its subsidiaries are third-party beneficiaries of these Terms and may enforce them against you.
Your license is the one described in clause 10 and is limited to Apple-branded devices you own or control, subject to the Usage Rules of the Apple Media Services Terms and Conditions.

B.2 Google Play

If you obtained the app from Google Play, your use is additionally subject to the Google Play Terms of Service. Google is not a party to these Terms and is not responsible for the app.

B.3 Platform health data

Per Apple's (HealthKit) and Google's (Health Connect) policies, health data obtained from those platforms: is never used for advertising or marketing; is never sold or shared with data brokers or third parties for commercial purposes; is used exclusively for the health and fitness features described in the Privacy Policy; and is processed with your express, revocable consent.

20. Contact


General and support	[email protected]
Privacy	[email protected]
Address	Prolongación Matamoros #100, Eulalio Gutiérrez, C.P. 25903, Ramos Arizpe, Coahuila, Mexico

Drafted from the actual state of the product on August 25, 2026.