Terms of Use

§ 01Acceptance of these terms

These Terms of Use ("Terms") form a legally binding agreement between you and SYLERO B.V., a private limited company registered in the Netherlands (KVK 69820309) ("SYLERO", "we", "us"), governing your use of the Workout Lens iOS application, including all updates, features and the optional AI Coach Pro subscription (collectively, "the App").

By downloading, installing or using the App you confirm that you have read, understood and accepted these Terms together with our Privacy Policy. If you do not agree, do not use the App.

§ 02Eligibility

You must be at least 16 years of age, or the age of digital consent in your jurisdiction, to use the App. By using the App you represent and warrant that you meet this requirement and have the legal capacity to enter into these Terms.

The App is intended for healthy adults using it as part of a recreational or amateur athletic routine. It is not designed for children, patients, or anyone using the App as part of a clinical treatment plan.

§ 03License grant

Subject to your compliance with these Terms, SYLERO grants you a limited, non-exclusive, non-transferable, revocable license to download, install and use the App on any iOS device that you own or control, solely for your personal, non-commercial use.

This license does not allow you to:

• Resell, sublicense, rent, lease or otherwise transfer the App;
• Modify, reverse-engineer, decompile or disassemble the App except as permitted by mandatory law;
• Use the App to develop a competing product or service;
• Remove or alter any copyright, trademark or other proprietary notices;
• Use any automated system to access or scrape the App.

§ 04AI Coach Pro subscription

Workout Lens is free to download. Workout analysis, exports and Apple Health integration are included at no cost. AI Coach Pro is an optional auto-renewable subscription that unlocks the personalised daily coach, the adaptive training plan and the on-device chat.

We offer two billing periods, sold and processed by Apple via the App Store:

• AI Coach Pro — Monthly: €2.99 per month
• AI Coach Pro — Yearly: €23.99 per year (saves approximately 33% vs. monthly)

Prices are inclusive of applicable VAT for EU customers and may vary by country and currency in line with Apple's published price tiers. The exact price in your local currency is shown inside the App and during the App Store purchase confirmation before you complete the transaction.

§ 05Auto-renewal disclosure

You can manage and cancel your subscription at any time by going to Settings → [your name] → Subscriptions on your iPhone, or directly via apps.apple.com/account/subscriptions. Cancelling stops future renewals; you keep access to AI Coach Pro until the end of the current paid period.

§ 06Refunds & trial periods

All purchases are processed by Apple. SYLERO does not issue refunds directly. To request a refund, please contact Apple Support or use Apple's "Report a Problem" flow at reportaproblem.apple.com.

If a free trial is offered, the trial period and its conversion behaviour are clearly shown in the App and in the App Store purchase sheet before you confirm the subscription. Cancelling during the trial prevents any charge.

For EU consumers, the right of withdrawal under Article 16(m) of the Consumer Rights Directive does not apply once delivery of digital content has begun with your express prior consent — which occurs when you start using AI Coach Pro features after purchase.

§ 07Important medical disclaimer

By using the App you acknowledge that you participate in physical activity at your own risk. SYLERO disclaims all liability for any injury, illness or other adverse consequence that may result from following any suggestion provided by the App.

§ 08AI & data accuracy disclaimer

AI Coach Pro uses an on-device language model and statistical analysis based on data from Apple HealthKit. Like all AI systems, it can produce output that is incorrect, incomplete, outdated, or otherwise unsuitable for your specific situation.

• Readiness scores and recovery interpretations are estimates derived from limited consumer-grade sensors.
• Training-plan suggestions are templates and may not be appropriate for your individual goals, capacity or constraints.
• AI chat responses may contain factual errors or "hallucinations".
• HealthKit data quality depends on your wearable device and Apple's APIs; readings can be missing, delayed or inaccurate.

You are responsible for evaluating any output before acting on it. Do not use AI Coach Pro for any safety-critical purpose.

§ 09Acceptable use

You agree not to use the App in any way that:

• Violates any applicable law, regulation or third-party rights;
• Attempts to interfere with the App's normal operation, including bypassing security mechanisms or subscription enforcement;
• Misrepresents your identity, age or medical status;
• Reverse-engineers or extracts the on-device language model for use outside the App.

§ 10Intellectual property

The App, including its source code, design, copy, illustrations, audio, video and the "Workout Lens" name and logo, is owned by SYLERO B.V. or its licensors and is protected by copyright, trademark and other intellectual-property laws.

These Terms do not transfer any ownership rights to you. Any feedback you voluntarily provide may be used by SYLERO for any purpose without obligation to you, provided we do not identify you personally without your consent.

"Apple", "HealthKit", "Apple Watch", "iPhone", "iOS", "Apple Neural Engine" and related marks are trademarks of Apple Inc. and are used here under fair-use principles. SYLERO is independent of and not affiliated with Apple Inc.

§ 11Third-party services

The App relies on Apple platform services (HealthKit, StoreKit, App Store, iCloud, push-notification infrastructure, Apple Neural Engine). Your use of those services is governed by Apple's own terms and privacy policy. SYLERO is not responsible for the availability, performance or content of any third-party service.

If you choose to share exported workout files with a third-party application or service, the use of those files by that third party is governed by its own terms, not by these Terms.

§ 12No warranty

The App is provided "as is" and "as available" without any warranty of any kind, whether express, implied or statutory, including the implied warranties of merchantability, fitness for a particular purpose, accuracy or non-infringement, to the maximum extent permitted by applicable law.

SYLERO does not warrant that the App will be uninterrupted, error-free, free of viruses or other harmful components, or that any data processed by the App will be accurate or reliable. The on-device AI model may produce results that vary across iPhone hardware generations and software versions.

Nothing in these Terms excludes or limits warranties or remedies that cannot be excluded or limited under the law applicable to consumers in your jurisdiction (including, for EU consumers, the mandatory conformity and remedy rules under Directive (EU) 2019/770).

§ 13Limitation of liability

To the maximum extent permitted by applicable law, in no event shall SYLERO, its directors, employees, agents or affiliates be liable for any indirect, incidental, special, consequential or punitive damages — including but not limited to loss of profits, loss of data, personal injury, property damage, or any loss resulting from your reliance on output produced by the App — arising out of or in connection with these Terms or your use of the App, whether based on warranty, contract, tort (including negligence) or any other legal theory, and whether or not SYLERO has been informed of the possibility of such damage.

In any case, SYLERO's total cumulative liability arising out of or in connection with these Terms shall not exceed the greater of (a) the amount paid by you for the App or AI Coach Pro in the twelve months preceding the event giving rise to liability, or (b) €50.

Nothing in these Terms excludes or limits SYLERO's liability for death or personal injury caused by negligence, for fraud, or for any other liability that cannot be excluded by law.

§ 14Indemnification

You agree to indemnify, defend and hold harmless SYLERO and its officers, directors, employees and agents from any claim, demand, loss or expense (including reasonable attorneys' fees) arising out of (i) your breach of these Terms; (ii) your misuse of the App; (iii) your violation of any third-party right, including any intellectual-property or privacy right.

§ 15Termination

You may terminate these Terms at any time by uninstalling the App and cancelling any active subscription. SYLERO may suspend or terminate your access at any time if you breach these Terms or use the App in a way that creates a legal or security risk.

Sections concerning intellectual property, disclaimers, limitation of liability, indemnification, governing law and the miscellaneous provisions survive termination.

§ 16Governing law & dispute resolution

These Terms are governed by the laws of the Netherlands, without regard to its conflict-of-laws principles. Any dispute arising out of or in connection with these Terms shall be submitted to the exclusive jurisdiction of the competent court in The Hague, the Netherlands, subject to mandatory consumer-protection rules that grant you the right to bring proceedings in the courts of your place of residence under applicable EU law.

EU consumers may also use the European Online Dispute Resolution platform to resolve disputes out of court. SYLERO is not obliged to participate in dispute-resolution proceedings before a consumer arbitration body.

§ 17Severability & entire agreement

If any provision of these Terms is found to be unenforceable, the remaining provisions remain in full force and effect. These Terms, together with our Privacy Policy, constitute the entire agreement between you and SYLERO concerning the App and supersede all prior agreements, communications and representations.

No waiver of any term shall be deemed a continuing waiver of any other term. You may not assign these Terms without SYLERO's prior written consent.

§ 18Changes to these terms

We may update these Terms from time to time. When we do, we will revise the "Effective date" at the top of this page and, for material changes, show an in-app notice or update the App Store description. Continued use of the App after a change constitutes acceptance of the revised Terms.

§ 19Contact

For any questions about these Terms: