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Terms and Conditions of Use

Last updated: 12 August 2026

This is a subscription service that renews automatically until you cancel. Please read these Terms carefully — in particular section 5, Subscription fees and payment — before starting a trial or completing a purchase.

You must actively cancel to avoid being charged. You can do that at any time before your next renewal date in the Billing Center, in this app. Removing the app from your device does not cancel your subscription.

1.Acceptance of these terms

1.1Dr. Masters and the content available through the app, our websites and our emails (the “Content”) are provided by Dr. Masters, a sole trader, contactable at support@drmasters.app(“we”, “us”, “our”). The app, together with the Content, tools and other services available through it, are together the “Service”.
1.2Your access to and use of the Service means you agree to be bound by these Terms and Conditions of Use (the “Terms”), which form a legally binding contract between you and the Company. Please read them before using the Service.
1.3Please also read our Privacy Policy and our Billing Terms. The Billing Terms set out the scope and cost of each subscription. Both are incorporated into these Terms by reference.
1.4We may change these Terms. We will tell you by updating the “Last updated” date above and, where the change materially affects what you pay or what you receive, by email to the address on your account before the change takes effect.
1.5These Terms contain important health disclaimers (section 2), a disclaimer of warranties (section 8) and a limitation of liability (section 9).
1.6If you do not agree with any part of these Terms, or you are not eligible to be bound by them, do not use the Service.

2.Health disclaimers

2.1The Company does not provide medical advice, healthcare services, diagnosis or treatment. Nothing in the Service is counselling, testing, evaluation, prescription, procedure or therapy relating to the avoidance, prevention, diagnosis or treatment of any injury, illness, disease or condition.
2.2The Service is a training programme and an educational tool. It is not suitable for everyone and it is not a substitute for professional healthcare. Exercise carries risk, including the risk of injury, and you accept that risk when you train.
2.3Speak to a doctor or another qualified healthcare professional before you start — in particular if you have pain in the pelvis, groin or lower back, a urinary or bowel condition, recent surgery in the area, a neurological condition, or if you are receiving treatment for any sexual health condition. Do not use the Service against medical advice or where doing so could pose a health risk. Stop training and seek advice if you experience pain, bleeding, numbness or worsening symptoms.
2.4Content in the Service is not a substitute for your own doctor. This applies to all Content, including anything presented by or attributed to a clinician. If you have a health question, contact your own healthcare provider. In an emergency, contact your local emergency services immediately.
2.5Using the Service does not create a doctor-patient or any other clinical relationship between you and the Company.
2.6We make no guarantee about the results you will get. Results depend on your starting point, your health, your consistency and factors outside our control, and they differ from person to person. Any testimonial or example shown is that person's result and is not a promise of yours. We also cannot guarantee that results you achieve will persist if you stop training.

3.Eligibility

3.1By using the Service you confirm that you are at least 18 years old, that you have the legal capacity to enter into these Terms, and that the information you give us is true, accurate and current.
3.2If you give us information that is untrue, inaccurate or incomplete, we may refuse or withdraw your access to the Service.

4.The Service and our intellectual property

4.1All text, images, marks, logos, data, software, exercise programmes and other materials in the Service belong to us or to our licensors. We reserve all rights in them. The Service does not transfer any of those rights to you.
4.2We grant you a personal, non-exclusive, non-transferable, revocable licence to use the Service for your own personal, non-commercial use while your subscription is active.
4.3You are responsible for the device and the internet connection you need to use the Service, and for any costs they involve.
4.4We may change, suspend or discontinue any part of the Service at any time. If we discontinue a paid feature you have already paid for, section 5 governs what happens to your fees.

5.Subscription fees and payment

5.1Some features of the Service are provided on a subscription basis for a fee. The plans, the amount charged today, and the amount charged at each renewal are set out in the Billing Terms and were shown to you on the payment screen before you paid.
5.2We sell directly. Your subscription is bought from us, not through the Apple App Store or Google Play. Card payments are processed on our behalf by Stripe. We are the merchant of record, which means refunds and billing questions are ours to answer — contact support@drmasters.app.
5.3Your subscription renews automatically. Unless you cancel, we will charge the payment method you gave us for each renewal period at the renewal price shown to you when you subscribed. The renewal period is the same length as your initial period unless we told you otherwise.
5.4We may change our prices. We will give you notice by email before a price change affects you, and the new price will apply only from your next renewal. If you do not want to pay it, you can cancel before that renewal date.
5.5How to cancel. Open the app, go to Profile → Billing Center → Cancel membership, and follow the steps to the end. Cancelling stops all future charges. You keep full access until the end of the period you have already paid for, and we do not pro-rate or refund the remainder of that period except as set out in 5.7 and 5.8. Anything you bought outright, like Groundwork Accelerator, stays yours. If we refund you, access ends straight away, add-ons included.
5.6Removing the app does not cancel your subscription. Neither does signing out, deleting your progress, or stopping using the Service. You must cancel in the Billing Center, or by emailing support@drmasters.app from the address on your account.
5.7Your statutory cancellation rights. These apply in addition to anything else in these Terms and nothing here limits them.
  • EU and UK. You have 14 days to withdraw from a contract for digital content without giving a reason. Your access starts as soon as you pay, and we do not ask you to give up the withdrawal right in return for that, so you keep the full 14 days. Email support@drmasters.app within 14 days of your payment and we will return what you paid.
  • California and Connecticut. If you live in either state, you may cancel your purchase up to midnight on the third business day after the date of purchase and we will return what you paid.
5.830-day money-back guarantee. Separately from 5.7, if you follow the programme and it does not work for you, we will refund what you paid for the current period. To qualify you must:
  • email support@drmasters.app within 30 days of your first payment and before your current period ends; and
  • have actually trained. That means completed training days (both sessions) on at least 3 days if you bought the 7-day starter, or on at least 7 days if you are on the 1-month or the 3-month plan. If you bought the starter and it has already renewed into the monthly plan, the 3-day condition is the one that applies to you.
You do not need to send us screenshots or evidence. Your training record is in your account and we check it ourselves. We will tell you by email whether the refund is approved, and pay approved refunds to the original payment method.
5.9One-time add-ons are refundable within 30 days of the day you bought them. Because an add-on is a one-time purchase and not a programme you train, the training condition in 5.8 does not apply to it: just ask. Outside that, and outside 5.7 and 5.8, fees already paid are not refundable and are not exchangeable, though we may grant a refund at our discretion. We will always meet our obligations under applicable consumer law, including where the Service is faulty.
5.10If a payment fails, we may retry it, and we may suspend or end your access to the paid features until it succeeds. Your rights to use the paid Service end when the paid period ends.
5.11Where we offer a free trial, the length and terms are shown when you sign up. Unless you cancel before the trial ends, your subscription continues and the applicable fee is charged. We aim to remind you before a trial ends but do not guarantee a reminder — the trial end date is shown in your Billing Center.

6.What you agree not to do

6.1You may use the Service only for the purpose we provide it for. You agree not to:
  • copy, scrape or systematically extract the Content, or build any collection or database from it
  • modify, translate or create derivative works from the Service
  • resell the Service, or share your access with other people or devices
  • use the Service to build a competing product or service
  • reverse engineer, decompile or disassemble any part of the Service
  • circumvent or interfere with security features, or bypass access restrictions
  • interfere with or place an undue burden on the Service or the networks behind it
  • upload anything containing malware, or run bots, scrapers or automated scripts against the Service
  • use the Service unlawfully or in breach of these Terms

7.Third-party services and links

7.1The Service relies on third parties, including our payment processor (Stripe) and our hosting and database providers. It may also link to third-party websites. We do not control those third parties and are not responsible for their content, products or practices. Their own terms and privacy policies apply when you deal with them. The app itself carries no advertising or analytics trackers — see the Privacy Policy.

8.Disclaimer of warranties

8.1The Service and the Content are provided “as is” and “as available”, without warranty of any kind, express or implied, including any implied warranty of title, non-infringement, merchantability or fitness for a particular purpose. We do not warrant that the Service will be accurate, uninterrupted, secure or error-free, that defects will be corrected, or that any particular result will be achieved.
8.2Nothing in this section excludes any warranty or right that cannot be excluded under the law that applies to you. Consumers have legal rights that these Terms do not affect.

9.Limitation of liability

9.1To the extent permitted by law, we are not liable to you for any lost profit or any indirect, consequential, incidental, special, exemplary or punitive damages arising from these Terms or from your use of, or inability to use, the Service, even if we were advised such damages were possible.
9.2Our total liability to you for all claims arising from the Service is limited to the amount you have paid us in the twelve months before the claim arose.
9.3Nothing in these Terms limits our liability for death or personal injury caused by our negligence, for fraud, or for anything else that cannot be limited by law. Some jurisdictions do not allow the exclusions above, so they may not apply to you, and you may have other rights that vary by jurisdiction.

10.International use

10.1We make no representation that the Service is appropriate or available in your location. You access it on your own initiative and are responsible for complying with local law.

11.Disputes

11.1If you are a consumer resident in the EU or UK, you keep the protection of the mandatory consumer laws of the country you live in, and you may bring proceedings in your local courts.
11.2Before starting any formal dispute, please email support@drmasters.app — most issues are billing issues and we would rather fix them than argue about them.

12.General

12.1If we do not enforce a right straight away, we do not waive it. If any provision of these Terms is found invalid, the rest stays in force.
12.2These Terms, together with the Billing Terms and the Privacy Policy, are the whole agreement between you and us about the Service.
12.3We may transfer our rights and obligations under these Terms to another company, for example if our business is sold. Your rights under these Terms are not affected, and if you are not happy you may cancel.
12.4You agree that we may communicate with you electronically, and that notices, disclosures and agreements we provide electronically have the same effect as if they were in writing.
12.5We are not liable for failing to meet these Terms where the cause is outside our reasonable control.

13.Contact

13.1Questions, notices and refund requests: support@drmasters.app. Postal address for formal notices: Dr. Masters, K Brance 1173/15, 155 00 Prague, Czech Republic.