The rules for using Coach Yu safely and fairly.

Section 01

User accounts and registration

1.1 Creating an account

To use Coach Yu, you must provide accurate information during registration, maintain a valid email address so we can contact you about your account, and accept these Terms and our Privacy Policy.

We do not require or store physical addresses. We reserve the right to refuse service to anyone, at any time, for any reason.

1.2 Your responsibility for your account

You are responsible for keeping your password confidential and secure, all activity on your account, notifying us immediately if you believe your account has been compromised, and logging out of shared devices before leaving them unattended.

Coach Yu is not liable for any unauthorized access to your account if you fail to protect your password.

1.3 One account per person

You may only create and maintain one personal account. You cannot create multiple accounts to avoid fees or restrictions, share your account with other people, transfer your account to someone else, or buy or sell accounts.

If we discover duplicate or fraudulent accounts, we will delete them without notice or refund.

1.4 Acceptable account behavior

When using Coach Yu, you agree not to impersonate anyone else, harass or threaten other users, post spam or malware, access data or features you are not authorized to use, reverse-engineer or interfere with the app or servers, scrape or bulk-download data, or use Coach Yu for illegal activity.

1.5 Suspension and termination

We may suspend or terminate your account if you violate these Terms, engage in harmful, abusive, or illegal behavior, repeatedly fail to sync or maintain your account, request deletion, or stop using the app for 12 months. We hold the right to terminate any account at any time, for any reason, without notice.

• You lose access to Coach Yu and any programs, videos, or data in your account.
• Synced data may be retained for a limited time for recovery, then deleted.
• You remain liable for any fees owed up to termination.

1.6 Account deletion

You can delete your account anytime by requesting it in the app or emailing us.

• All your account data, programs, and videos will be permanently deleted from our servers.
• Data on your device will remain; you can delete the app to remove it.
• You forfeit any unused paid access.
• Deletion is permanent and we cannot recover it.

We may retain aggregated, anonymized data for analytics, but not personally identifiable information.

1.7 Changes to your account

You can update your profile, email, or preferences anytime in the app. If you change your email, we will send a confirmation link to verify the new address.

Section 02

Liability and disclaimers

2.1 No medical or training advice

Coach Yu is a training logging and program tracking app, not medical advice. Programs and coaching content are informational only. We are not doctors, physiotherapists, or licensed coaches, and we do not diagnose or treat injuries.

If you are pregnant, injured, recovering from surgery, or have health conditions, consult your doctor before using Coach Yu. You are solely responsible for ensuring any training program is safe for your body and goals.

2.2 Assumption of risk

Olympic weightlifting and strength training carry inherent risks of injury, death, and property damage. You participate entirely at your own risk, acknowledge these risks, and accept full responsibility for your safety.

You are responsible for checking your own form, equipment condition, and training environment. You will not hold Coach Yu liable for any injury, illness, or death occurring during or after training.

2.3 Your responsibility

• Check your own form and progress. Coach Yu is a logging tool, not real-time form correction.
• Stop immediately if you experience pain, dizziness, nausea, or other warning signs.
• Ensure your equipment is safe and in good condition.
• Verify your training space is safe, including floor space, ventilation, and spotters if needed.
• Read all in-app coaching cues, form notes, and program instructions before executing.

2.4 Data loss and sync

Coach Yu uses local-first architecture. Your workout data, programs, and videos live on your device in the app's local storage. Data syncs to our servers after you complete a workout. If sync fails, your data remains on your device and you can try again later.

We are not liable for data loss due to device failure, accidental deletion, or network issues.

2.5 Service availability and bugs

Coach Yu is provided "as is" without warranties. We are not liable for service outages, bugs, downtime, lost or corrupted data from platform issues, sync delays or failures, or any indirect, consequential, or incidental damages.

Our total liability to you is limited to fees you have paid in the past 3 months, or GBP 0 if you have not paid.

2.6 Third-party content

Some programs or content may reference external sources, such as studies or other coaches. We do not endorse or control these, and we are not liable for their accuracy or your use of them.

2.7 Indemnification

You agree to indemnify, defend, and hold harmless Coach Yu, including Lewis Mills, Pui Kwan Yu, and any agents or employees, from any claims, damages, losses, liabilities, costs, or expenses arising from:

• Your use of Coach Yu or violation of these Terms.
• Any injury, illness, or death occurring during or after your training.
• Any content you upload, create, or share, including videos, photos, data, copyright claims, privacy violations, or defamation.
• Your breach of any third-party rights or laws.
• Your sharing of Coach Yu content or data on social media or other platforms.
• Any claims by other users related to your actions or content.

This applies whether Coach Yu distributes your content or you do it yourself.

Section 03

Intellectual property

3.1 Coach Yu content

Coach Yu owns the app, platform, design, technology, training programs, coaching content, educational materials, created videos, articles, resources, data, insights, and algorithms running the app.

You may use these only for your personal training. You cannot copy, modify, distribute, or commercialize this content.

3.2 Your content

When you upload content to Coach Yu, such as videos of your lifts, photos, or notes, you own the original content you create. You grant Coach Yu a non-exclusive license to:

• Store it securely on your device and sync it to our servers.
• Display it within your account.
• Use anonymized or aggregated data from your workouts to improve Coach Yu, with an opt-out available.
• Archive it for data recovery and account purposes.

You are responsible for ensuring you have the right to upload any content.

3.3 Attribution

You are welcome to share your results, programs, or feedback publicly, but you must not claim ownership of Coach Yu's app, content, or training methodology, and must not imply we endorse you unless we have agreed in writing.

3.4 Feedback

Any feedback, suggestions, or bug reports you send us becomes our property. We can use it to improve Coach Yu without asking permission or paying you again. If you would rather keep something private, do not send it to us.

3.5 No license to redistribute

You cannot sell, share, or redistribute Coach Yu programs or content to others, reverse-engineer the app, extract proprietary data, use Coach Yu data or algorithms to build a competing service, or scrape, automate, or bulk-download your data for external use.

3.6 Copyright and takedown notices

Coach Yu respects copyright. If you believe someone has uploaded copyrighted material to Coach Yu without permission, email security@coach-yu.com with a description of the copyrighted work, proof you own or control the copyright, and a link or details about the infringing content.

We will investigate and remove it within 48 hours if the claim is valid. Users who upload copyrighted material without permission are solely liable for all damages, legal costs, and claims arising from the infringement.

Section 04

Payment and refunds

4.1 Subscription tiers

4.2 Billing and payments

When you upgrade to Pro, you authorize Coach Yu to charge you via Stripe on a monthly or annual cycle. Charges occur on the same day each month or year. Stripe securely processes your payment; Coach Yu never stores your full card details. You will receive a receipt via email after each charge. All prices are inclusive of VAT where applicable.

4.3 Failed payments

If a payment fails, Stripe will attempt to retry it automatically. If retries fail, we will notify you by email. Your account will remain active for 7 days to resolve the payment. After 7 days, your subscription is suspended and you revert to Free tier. Once payment is resolved, Pro features are restored immediately.

4.4 Refund policy

Coach Yu operates a 7-day money-back guarantee for new subscriptions. If you upgrade to Pro and change your mind within 7 days, email support@coach-yu.com to request a full refund.

Refunds are processed back to your original payment method within 5-10 business days. After 7 days, subscriptions are non-refundable. If you have already downloaded programs, logged workouts, or used significant Pro features, refund requests may be denied.

4.5 Cancellation

You can cancel your Pro subscription anytime. Your access to Pro features ends at the end of your current billing cycle, with no refund for unused time in your current billing period. Your account reverts to Free tier automatically, and your data remains on your device and synced to our servers.

4.6 Upgrades and downgrades

Upgrading to Pro starts your first Pro charge immediately. If you are already in a billing cycle, your next cycle charge is adjusted fairly with no double-charging. Downgrading to Free takes effect at the end of your current billing period, and you keep access to Pro features until then.

4.7 Regional pricing

Coach Yu offers regional pricing to support athletes globally. Prices vary by region to reflect local markets. Your regional price is determined by your billing address or payment method location, and Stripe automatically calculates this at checkout. We reserve the right to update pricing with 30 days' notice, with changes taking effect on your next billing cycle.

4.8 Taxes and VAT

All prices displayed in the app include applicable taxes, including VAT and sales tax. Stripe calculates and remits taxes on your behalf. You will see itemized tax on your receipt.

4.9 Ambassador tier changes

Ambassador status is a gift and may be revoked at any time, without notice, for any reason or no reason at all. If revoked, your account reverts to Free tier immediately, you do not receive a refund for the value of Ambassador access you used, and all your data remains accessible.

4.10 Disputes and chargebacks

If you dispute a charge with your bank or Stripe, we will investigate the dispute. If we cannot resolve it, your account may be suspended or terminated, and chargeback fees may be added to your account. Contact support@coach-yu.com to resolve billing issues before initiating a chargeback.

Section 05

Acceptable use

5.1 Permitted use

You may use Coach Yu to log your own training workouts, track progress, store and review videos of your lifts, follow training programs designed for you, monitor performance metrics, share results privately with coaches or training partners if you choose, and provide feedback to help improve Coach Yu.

5.2 Prohibited use

You may not use Coach Yu to impersonate anyone, upload videos without permission, share credentials, upload explicit or abusive content, spam or advertise without permission, hack or interfere with the app, scrape other users' data, use automated tools in disruptive ways, log fake workouts, circumvent payment systems, use Coach Yu commercially without an agreement, or engage in illegal activity.

5.3 Video content

When you upload videos to Coach Yu, you confirm you own the video or have permission to upload it. You may not upload videos of other people without their consent. Videos remain your property but are subject to Coach Yu's storage and privacy policies.

We may use anonymized clips for product improvements or form analysis, with an opt-out available. Do not upload footage that is explicit, abusive, contains hate speech, or is irrelevant to training and weightlifting.

5.4 Equipment and safety

You agree to use safe, well-maintained equipment, avoid unsafe conditions, avoid lifts you are not trained for or capable of performing, honor equipment limitations noted by the app, and stop immediately if you feel pain, dizziness, or other warning signs.

Coach Yu may flag or reject workouts that appear unsafe or unrealistic. If this happens, review your entry because it is likely a data error.

5.5 Data accuracy

You agree to log workouts honestly and accurately, avoid fabricating PRs or fake training sessions, correct errors or delete workouts if logged incorrectly, and understand that false data misleads you and anyone reviewing your progress.

5.6 Respect for other users

You agree not to harass, threaten, or abuse other users, share screenshots or videos of other users without consent, stalk or attempt to identify other users, or send unsolicited messages or contact users externally based on information from Coach Yu.

5.7 Rate limiting and abuse

Coach Yu does not maintain a documented public API. Skilled developers can discover and use Coach Yu's endpoints to access their own data programmatically.

You may not access other users' data, circumvent authentication, or make requests that disrupt Coach Yu's service or exceed normal usage patterns. If your usage patterns exceed what we consider normal, we may rate-limit requests, temporarily suspend access, or require a commercial agreement for continued high-volume access.

5.8 Third-party integrations

If Coach Yu integrates with third-party services such as Apple Health, Spotify, or YouTube for form analysis, you are responsible for those services' terms and privacy policies. Coach Yu is not liable for third-party outages or data breaches. You can disconnect integrations anytime in settings.

5.9 Research and analytics

Coach Yu uses Firebase Analytics to understand app interaction. This can include app opens, session starts, screen engagement, app version, device model, OS version, language, onboarding progression, authentication events, feature usage, and toggle state changes.

Firebase Analytics does not collect your name, email, account identifiers, workout data, physical profile data, video or analysis data, heart-rate or sensor data, or Apple Health data. It is only initialized if you opt in at first launch, and you can disable it anytime in device settings or by contacting support@coach-yu.com.

If you enable video upload, Coach Yu may use anonymized video clips and lifting data to improve AI form analysis and coaching recommendations, research training patterns in Olympic weightlifting, or publish anonymized insights. We will not use identifiable video footage for research without your explicit consent.

You can opt out of analytics and video-based AI improvements by disabling Firebase Analytics, toggling off "Upload Recordings to Server", or emailing support. Anonymized data retained for research and AI improvement is held for a maximum of 2 years after account deletion, then permanently deleted.

5.10 Enforcement

If you violate this Acceptable Use policy, Coach Yu may warn or contact you, restrict or suspend your account, terminate your account and delete your data, or report illegal activity to relevant authorities. We do not need to give notice before suspending or terminating your account.

Section 06

General terms

6.1 Jurisdiction and governing law

These Terms and Conditions are governed by the laws of the United Kingdom. Any disputes arising from your use of Coach Yu will be subject to UK law and the exclusive jurisdiction of UK courts.

6.2 Third-party dependencies

Apple

Coach Yu is an iOS and watchOS app. Using Coach Yu requires accepting Apple's App Store terms and conditions. Coach Yu stores your passkey credentials in Apple iCloud Keychain. We are not responsible for Apple's app rejection, App Store removal, or policy changes. If Apple removes Coach Yu from the App Store, we are not liable, though we will work to resolve the issue and contact you with updates.

Stripe

Coach Yu processes payments through Stripe. Your final charge includes the subscription price plus applicable taxes and payment processing fees determined by Stripe. We are not responsible for Stripe's fees, tax calculations, or payment failures. For questions about a specific charge, contact Stripe directly or email support@coach-yu.com.

Google Cloud

Coach Yu runs on Google Cloud infrastructure, including Storage, MongoDB Atlas, Cloud Run, and Analytics. If Google Cloud experiences outages or service disruptions, Coach Yu will be unavailable. We are not liable for these outages. We will monitor the situation and keep you informed, but we cannot control Google's infrastructure.

6.3 Contact information

For questions, concerns, or support requests, contact Coach Yu Support at support@coach-yu.com. For security issues, email security@coach-yu.com.

Coach Yu is operated by Lewis Mills and Pui Kwan Yu.

6.4 Amendments to these Terms

We may update these Terms from time to time. We will notify you within the app of significant changes before they take effect. Continued use of Coach Yu after an update constitutes acceptance of the revised Terms.

6.5 Entire agreement

These Terms and Conditions, together with the Coach Yu Privacy Policy, constitute the entire agreement between you and Coach Yu regarding your use of the app. If any provision is found unenforceable, the remaining provisions will remain in effect.

6.6 Severability

If any part of these Terms is found invalid or unenforceable, that part will be severed, and the rest of the Terms will remain in full force and effect.

6.7 Waiver

If we fail to enforce any provision of these Terms, it does not mean we have waived our right to enforce it later.

6.8 No third-party beneficiaries

These Terms are between you and Coach Yu only. No third party has any rights or obligations under these Terms.