Terms of Service

Effective date: 28 July 2026 · Last updated: 13 August 2026

What changed on 13 August 2026: we added Section 9.1 (AI Features) and generalized the naming of AI providers in Section 10. On 28 July 2026 we added Section 19 (Coach Subscriptions, sold through Polar as Merchant of Record, including the EU right of withdrawal) and Section 20 (Data Processing terms for coaches), and contact details moved to Section 21.

These Terms of Service ("Terms") are a binding agreement between you ("you", "your", or "User") and Raúl Armando Bustamante, an individual sole trader (freelancer) based in Spain, operating under the name "Plyox" ("Plyox", "we", "us", or "our"), the operator of the Plyox mobile application and related services (together, the "Service").

By creating an account, downloading, accessing, or using the Service, you confirm that you have read, understood, and 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 use the Service.

1. The Service

Plyox is a fitness and workout-logging application that lets you record training sessions, track sets, reps, weights, personal records, body measurements and streaks, follow training programs, view statistics, and—where available—receive coaching content. Some features are free; others require a paid subscription (see Section 4). We may add, change, or remove features over time.

The Service is a tool for tracking and organizing fitness activity. It is not a medical device and does not provide medical, diagnostic, or professional health advice (see Section 9).

2. Eligibility

You must be at least 16 years old, or the minimum age of digital consent in your country, to use the Service. If you are under the age of majority where you live, you may only use the Service with the involvement and consent of a parent or legal guardian who agrees to these Terms. By using the Service you represent that you meet these requirements.

3. Your Account

To use most features you must create an account. You agree to:

  • provide accurate and complete information and keep it up to date;
  • keep your login credentials confidential and not share your account;
  • be responsible for all activity that occurs under your account; and
  • notify us promptly at support@plyox.ai of any unauthorized use.

You may sign in using third-party authentication providers (e.g. Google or Apple). Your use of those providers is subject to their own terms. You can delete your account at any time from within the app; deletion is handled as described in our Privacy Policy.

4. Subscriptions, Free Trials, Billing and Cancellation

This section governs all paid plans. Please read it carefully.

4.1 Plans

The Service offers a free tier and paid subscription tiers:

  • Free — core workout logging, personal records, and streaks at no cost.
  • Pro — additional features (full training history, statistics, programs, measurement charts, reports, data export, and more), offered as a monthly or annual auto-renewing subscription.
  • Elite — an additional tier that may be offered in the future. Where shown as "coming soon", it is not available for purchase.

4.2 Prices

Indicative pricing for Pro at launch is €6.99 per month and €59.99 per year. The price shown to you in the Apple App Store or Google Play at the time of purchase is the binding price and may vary by country, currency, and applicable taxes. We may change prices; changes do not affect the current paid period and will be disclosed before they apply to you.

4.3 Free trials

We may offer a free trial (for example, 7 days on the monthly plan and 14 days on the annual plan). Unless stated otherwise:

  • a free trial is available once per user and may require eligibility checks by the app store;
  • if you do not cancel before the trial ends, the subscription automatically converts to a paid subscription and the applicable price is charged;
  • starting a new paid subscription may make you ineligible for another trial.

4.4 Auto-renewal

Paid subscriptions renew automatically. Unless you cancel, your subscription renews at the end of each billing period (monthly or annual) and your store account is charged the then-current price within 24 hours before the end of the current period. Renewal continues until you cancel.

4.5 How to cancel

You can cancel at any time, and you manage and cancel your subscription through your app store account settings, not through Plyox:

  • Apple App Store: Settings → your name → Subscriptions.
  • Google Play: Play Store → Profile → Payments & subscriptions → Subscriptions.

To avoid being charged for the next period, cancel at least 24 hours before the current period (or free trial) ends. Cancellation takes effect at the end of the current paid period; you keep access until then. Deleting the app does not cancel a subscription.

4.6 Refunds

Subscriptions are purchased through the Apple App Store or Google Play, and refunds are governed by the policies of the store through which you bought:

  • App Store purchases: refunds are handled solely by Apple. We are not able to issue refunds for App Store purchases. Request a refund at reportaproblem.apple.com.
  • Google Play purchases: refunds follow Google Play policy; you can request one through Google Play, and you may also contact us at support@plyox.ai.

Nothing in this section limits any non-waivable statutory rights you have as a consumer under the laws of your country (including, for users in the EU/EEA, mandatory consumer-protection rights).

4.7 Coach-granted access

If a coach or trainer links you to their active Plyox plan, you may receive Pro access at no charge to you for as long as that coach's plan remains active. If the link ends or the coach's plan becomes inactive, your access reverts to your own paid subscription (if any) or to the Free tier. Historical data you logged is retained as described in Section 6 and our Privacy Policy.

4.8 Founding Members

We may recognize early subscribers (for example, the first 100 Pro subscribers) as "Founding Members" with a profile badge or similar acknowledgment. Such recognition is a non-monetary courtesy, has no cash value, and may be modified or discontinued.

5. License

Subject to these Terms, we grant you a personal, limited, non-exclusive, non-transferable, revocable license to download and use the Service on devices you own or control, for your own personal, non-commercial use. You may not sell, sublicense, rent, or commercially exploit the Service without our written permission.

6. Your Content and Data

You retain ownership of the data you create in the Service (such as workouts, measurements, notes, and personal records) ("Your Content"). You grant us a worldwide, non-exclusive license to host, store, process, back up, and display Your Content solely to operate, secure, and improve the Service for you.

How we collect, use, store, and retain personal data—including processors we rely on (such as Google Firebase / Google Cloud for authentication, database, and storage, and Adapty for subscription management) and our backup retention (currently 180 days)—is described in our Privacy Policy. You are responsible for keeping your own copies of important data.

7. Acceptable Use

You agree not to:

  • use the Service for any unlawful purpose or in violation of these Terms;
  • attempt to access accounts, data, or systems that are not yours;
  • reverse engineer, decompile, or attempt to extract source code, except to the extent this restriction is prohibited by law;
  • interfere with, disrupt, overload, or circumvent the security or rate limits of the Service;
  • upload malicious code or content that is illegal, infringing, or harmful; or
  • resell, scrape, or use the Service to build a competing product.

We may suspend or terminate access for conduct that violates these Terms.

8. Intellectual Property

The Service, including its software, design, text, graphics, logos, and trademarks (excluding Your Content), is owned by Plyox or its licensors and is protected by intellectual-property laws. These Terms do not transfer any ownership rights to you. "Plyox" and associated marks may not be used without our prior written consent.

9. Health and Fitness Disclaimer

Plyox is not a medical service and does not provide medical advice. The Service, including any programs, statistics, calculators (such as one-rep-max or warm-up estimates), or coaching content, is for general informational and fitness-tracking purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

  • Consult a physician before starting any exercise program, especially if you have a medical condition, are pregnant, are injured, or have any concern about your health.
  • Exercise carries inherent risks, including injury. You participate at your own risk and are solely responsible for exercising safely and within your limits.
  • Any calculated values (e.g. estimated one-rep max, suggested weights, warm-up sets) are estimates only; verify they are appropriate for you before relying on them.
  • Stop and seek medical attention if you experience pain, dizziness, or other symptoms.

To the fullest extent permitted by law, we are not responsible for any injury, loss, or harm resulting from your use of the Service or your physical activity.

9.1 AI Features

Parts of the Service use artificial intelligence — for example session analysis, insights, and the coach-side assistants that help draft workout and nutrition plans. AI output is generated automatically: it may occasionally be inaccurate, incomplete, or unsuitable for your situation, and it is provided for informational purposes only — it is not medical, nutritional, or other professional advice, and everything else in this Section 9 applies to it in full. Use your own judgment before acting on AI output, and consult a physician for anything health-related. Where a coach uses AI-assisted tools, the resulting plans are reviewed and assigned by that coach, who remains responsible for them. We may apply fair-use limits to AI features.

10. Third-Party Services

The Service relies on and integrates with third parties, including the Apple App Store, Google Play, Google Firebase / Google Cloud, Adapty, Polar (coach billing), Expo / EAS (app builds and updates), and LLM model providers that power the AI features. The current list is kept up to date in our Privacy Policy. Your use of those services is subject to their own terms and privacy policies. We are not responsible for third-party services, and their availability is outside our control.

11. Disclaimers

To the maximum extent permitted by law, the Service is provided "as is" and "as available", without warranties of any kind, whether express or implied, including implied warranties of merchantability, fitness for a particular purpose, accuracy, and non-infringement. We do not warrant that the Service will be uninterrupted, error-free, secure, or that data will never be lost. Some jurisdictions do not allow certain warranty exclusions, so some of the above may not apply to you, and nothing here limits your non-waivable statutory rights.

12. Limitation of Liability

To the maximum extent permitted by law:

  • Plyox and its operator will not be liable for any indirect, incidental, special, consequential, or punitive damages, or for any loss of data, profits, or goodwill, arising out of or related to your use of (or inability to use) the Service; and
  • our total aggregate liability for any claim relating to the Service will not exceed the greater of (a) the amount you paid us for the Service in the 12 months before the event giving rise to the claim, or (b) €50.

Nothing in these Terms excludes or limits liability that cannot be excluded or limited under applicable law (for example, liability for death or personal injury caused by negligence, fraud, or your mandatory consumer rights).

13. Indemnification

You agree to indemnify and hold harmless Plyox and its operator from any claims, damages, liabilities, and reasonable expenses (including legal fees) arising from your breach of these Terms, your misuse of the Service, or your violation of any law or third-party right.

14. Termination

You may stop using the Service and delete your account at any time. We may suspend or terminate your access if you breach these Terms, if required by law, or if we discontinue the Service. Provisions that by their nature should survive termination (including Sections 6, 8, 9, 11, 12, 13, and 16) will survive. On termination, your license ends and you must stop using the Service; an active subscription is still subject to the store cancellation and refund rules in Section 4.

15. Changes to the Terms and the Service

We may update these Terms from time to time. If we make material changes, we will provide reasonable notice (for example, in-app or by updating the "Last updated" date). Your continued use of the Service after changes take effect constitutes acceptance. We may also modify or discontinue features of the Service.

16. Governing Law and Disputes

These Terms are governed by the laws of Spain, without regard to conflict-of-laws rules. The courts of Spain will have jurisdiction, except that if you are a consumer, you benefit from any mandatory protections and the competent courts of your country of residence, and—for EU/EEA consumers—you may also use the European Commission's Online Dispute Resolution platform at ec.europa.eu/consumers/odr.

17. Apple App Store — Additional Terms

These terms apply if you download the App from the Apple App Store:

  • These Terms are between you and Plyox only, not with Apple. Apple is not responsible for the App or its content.
  • Apple has no obligation to provide maintenance or support for the App.
  • To the extent permitted by law, Apple has no warranty obligation, and any warranty claims, product-liability claims, claims that the App fails to conform to legal or regulatory requirements, and claims under consumer-protection or privacy law are our responsibility, not Apple's.
  • Apple is not responsible for addressing any third-party intellectual-property claims relating to the App.
  • You represent that you are not located in a country subject to a U.S. Government embargo or designated as "terrorist-supporting", and are not on any U.S. Government restricted-parties list.
  • Apple and its subsidiaries are third-party beneficiaries of these Terms and, upon your acceptance, have the right to enforce them against you.

18. Google Play — Additional Terms

If you download the App from Google Play, your use is also subject to the Google Play Terms of Service. Payments, billing, and refunds for purchases made through Google Play are handled by Google in accordance with Google Play policies.

19. Coach Subscriptions

This section applies only if you use Plyox as a coach or trainer to manage clients through the Plyox coach dashboard. Where it conflicts with Section 4, this section prevails for coach plans.

19.1 What a coach plan is

A coach plan gives you access to the coach dashboard: managing linked athletes, assigning workouts and nutrition plans, messaging your clients, and using the coach-side AI assistants. Plans are tiered by the number of active clients and by the AI allowance included. The features and limits of each tier are those described on our pricing page at the time you subscribe.

Coach plans are business-to-business: you subscribe in the course of your professional activity. If you subscribe as a consumer rather than as a professional, tell us before subscribing.

19.2 Seller of record — Polar

Coach subscriptions are not sold through the Apple App Store or Google Play. They are sold by Polar acting as our Merchant of Record. This means Polar is the seller for that transaction: Polar handles payment, invoicing, and the collection and remittance of VAT and other applicable taxes, and Polar's own terms and privacy policy apply to the payment relationship. We never see or store your card details.

19.3 Free trial and automatic charge

We offer a 14-day free trial of a coach plan. Please note:

  • a valid payment method is collected when you start the trial;
  • unless you cancel before the trial ends, the plan converts automatically to a paid subscription at the end of the 14 days and your payment method is charged the price shown when you subscribed;
  • a trial is available once per coach;
  • we will make the trial end date visible in your billing screen.

19.4 Auto-renewal

Coach subscriptions renew automatically at the end of each billing period at the then-current price, until cancelled. We will inform you of any price change before it applies to you; changes never affect the period you have already paid for.

19.5 Cancellation

You may cancel at any time through the Polar customer portal, reachable from the billing screen in the coach dashboard or from the receipt email Polar sends you. Cancellation takes effect at the end of the current paid period: you keep full access until then, and you are not charged again. Cancelling does not delete your account or your clients' data — see Section 20.6.

19.6 Refunds

Refunds are handled by Polar as Merchant of Record, in accordance with its refund policy and with applicable EU consumer and commercial law. Nothing in these Terms limits mandatory statutory rights you may have. If you believe you were charged in error, contact us at support@plyox.ai and we will help you resolve it with Polar.

19.7 Right of withdrawal (EU/EEA)

If you subscribe as a consumer in the EU/EEA, you have the right to withdraw from the contract within 14 days of entering into it, without giving any reason.

Because Plyox is digital content and a digital service supplied immediately:

  • by starting your trial or subscription and accessing the coach dashboard, you expressly request that we begin performance immediately, during the withdrawal period; and
  • you acknowledge that you lose your right of withdrawal once the service has been fully performed, and that where the service is only partly performed you will owe an amount proportionate to what has been supplied up to the moment you withdraw.

To withdraw, send an unambiguous statement to support@plyox.ai within the 14-day period. Where a refund is due, we (through Polar) will refund the part of the price corresponding to the period not yet supplied, using the same payment method, without undue delay.

This section does not apply if you subscribe as a business or professional, since the statutory right of withdrawal covers consumers only.

19.8 Your clients' access

While your coach plan is active, athletes you link to your roster may receive Pro-level access at no charge to them (see Section 4.7). If your plan ends, expires, or is suspended for non-payment, that granted access ends and each athlete falls back to their own subscription (if any) or to the Free tier. Their historical data is not deleted.

20. Data Processing Terms (Coaches)

This section forms a data processing agreement (DPA) between you as a coach and Plyox, for the purposes of Article 28 of the GDPR. It applies whenever you process personal data of your clients through the Service.

20.1 Roles

You are the controller of your clients' personal data — including health-related data such as training logs, body measurements, progress photos and nutrition data. Plyox is the processor, acting only on your documented instructions. Your use of the Service constitutes those instructions, together with any additional written instruction you give us. We remain the controller for your own coach account and for operating and securing the platform.

You are responsible for having a valid legal basis for the data you collect about your clients, for informing them, and for obtaining any consent required — in particular explicit consent for health-related data.

20.2 Subject matter, duration and scope

We process client data for as long as your account and coaching relationships remain active, solely to provide the Service: storing and displaying training and nutrition data, delivering messaging, generating AI-assisted plans and insights at your request, and providing support.

20.3 Confidentiality and staff

We keep client data confidential and ensure that anyone authorised to process it is bound by an appropriate duty of confidentiality.

20.4 Security

We implement technical and organisational measures appropriate to the risk, as described in the Security section of our Privacy Policy — including encryption in transit and at rest, per-account access rules enforced server-side, privileged operations restricted to server-side functions, and daily encrypted backups.

20.5 Sub-processors

You give us general authorisation to engage sub-processors. The current list is published in our Privacy Policy and includes our infrastructure, billing, delivery and AI providers. We impose data-protection obligations on each sub-processor equivalent to those in this section, and we remain liable to you for their performance. We will give reasonable notice before adding or replacing a sub-processor; if you object on reasonable data-protection grounds, you may terminate your subscription for the remaining period.

20.6 Deletion and return of data

On termination of your subscription, and at your choice, we will delete or return client data, except where storage is required by law. Athletes remain the owners of their own accounts: unlinking or terminating your plan does not delete an athlete's account or their personal training history, which they continue to control directly under our Privacy Policy. Data removed from the live database ages out of our backups within the retention window stated in the Privacy Policy.

20.7 Assistance

Taking into account the nature of the processing, we will assist you — by appropriate technical and organisational measures, and as far as is reasonably possible — in responding to data-subject requests (access, rectification, erasure, portability, restriction, objection), and in meeting your obligations regarding security, breach notification and data-protection impact assessments. We will notify you without undue delay after becoming aware of a personal data breach affecting your clients' data.

20.8 International transfers and audits

Transfers of personal data outside the EEA are covered by the safeguards described in our Privacy Policy (adequacy decisions or Standard Contractual Clauses). We will make available the information reasonably necessary to demonstrate compliance with this section and will contribute to audits conducted by you or an auditor you mandate, subject to reasonable notice, confidentiality, and limits that protect other customers' data and the security of the Service.

21. Contact

Questions about these Terms or billing support:

  • Raúl Armando Bustamante (operating as Plyox)
  • Email: support@plyox.ai
  • Spain

If any provision of these Terms is held unenforceable, the remaining provisions remain in effect. These Terms are the entire agreement between you and Plyox regarding the Service and supersede prior agreements on the subject.