Kit — Terms of Use

Last updated: 6 November 2026

These terms are an agreement between you and Joint Effort Technology LTD ("Joint Effort", "we", "us"), a company registered in England and Wales. Our address is Unit 82A, James Carter Road, Mildenhall, Bury St. Edmunds, IP28 7DE, United Kingdom. Contact: [email protected]. The terms cover your use of the Kit app and its related services ("Kit").

By using Kit you agree to these terms. If you do not agree, do not use Kit.

You must be 18 or over to use Kit.

1. What Kit is

Kit is a strength-training app. It matches you to a well-known training routine, adapts each workout to your past training, and lets you log workouts and see your history and personal records. Kit is a paid subscription with a free trial (section 4).

2. Health and safety — please read

• Kit is not medical advice. Suggested workouts, rest times, loads and any other guidance are general fitness information. They are not a diagnosis, treatment or a substitute for advice from a doctor, physiotherapist or qualified coach.
• Check with a professional first if you are new to exercise, pregnant, injured, recovering from illness, or have any medical condition.
• Suggestions can be wrong. Workouts may be generated by software, including AI models, from the information you give Kit. They may not suit you. Use your own judgement: stop if you feel pain, dizziness or discomfort, and never lift beyond what you can do safely.
• You train at your own risk. You are responsible for your technique, your equipment, your environment and using a spotter where appropriate.

3. Your account

Kit needs an account. Keep your sign-in details secure; you are responsible for activity under your account. You can delete your account at any time in the app (Account → Delete account). Our Privacy Policy explains what data Kit handles and where it goes.

4. Kit subscriptions

• Where you pay. Subscriptions are bought and billed through the Apple App Store or Google Play, and each store's own terms apply to the purchase. We never see your payment card details.
• Trial in the app. A new account gets 14 days of Kit free, with no payment details needed. It is given once per account. When it ends, Kit asks you to subscribe.
• Price and store trial. The price, and any free trial or introductory price, are shown by the store before you confirm. A referral code entered in the app before you subscribe may change the price you are offered.
• Renewal. Subscriptions renew automatically at the end of each billing period unless you cancel at least 24 hours before it ends. If you have a free trial, you are charged when it ends unless you cancel first.
• Cancelling. Cancel through your App Store or Google Play subscription settings. Deleting the app or your Kit account does not cancel a subscription. After cancelling, you keep access until the end of the period you have paid for. Without a trial or subscription Kit's features are unavailable, but your workouts stay on your phone and you can still export them.
• Refunds are handled by the store under its refund policy. This does not affect any rights you have under consumer law.
• Changes. We may change Kit's price or features. The store will tell you about any price increase before it applies, and you can cancel before it takes effect.

5. Your data and content

Your training data belongs to you. Kit stores it on your device and backs up a copy to your account with our backend provider, as described in the Privacy Policy. Data held only on your device is lost if you delete the app or lose the device without a backup. Kit also lets you export your data.

You allow us to process the information you enter, such as workouts, notes and feedback, only as needed to provide Kit's features, for example to generate your next workout.

6. Acceptable use

Do not misuse Kit. In particular, do not:

• reverse engineer the app or its services to extract keys or credentials, or to access them outside the app
• use Kit's servers or AI features other than through the app, or send automated or excessive requests
• interfere with Kit's security or availability
• use Kit to break the law or to harm anyone

We may suspend or restrict access to Kit's online services if you break these rules.

7. Our intellectual property

Kit, including its software, design and content, belongs to Joint Effort or our licensors. We grant you a personal, non-transferable, non-exclusive licence to use Kit on devices you own or control, for your own non-commercial use, under these terms and the rules of the store you downloaded it from.

8. Availability and changes

We work to keep Kit reliable, but we do not promise that it will always be available or error-free. Online features such as AI workouts and backup depend on third-party services and your connection; without them, Kit can still build a workout on your device. We may update Kit or these terms. If a change to these terms is significant, we will tell you in the app or by email before it applies.

9. Our responsibility to you

• Nothing in these terms limits liability that cannot legally be limited, including for death or personal injury caused by our negligence, or for fraud.
• If you are a consumer, you have legal rights under consumer law, for example that digital content matches its description and is of satisfactory quality. These terms do not affect them.
• Otherwise, we are not responsible for losses that were not foreseeable, for business losses (Kit is for personal use), or for losses caused by your failure to follow the health and safety guidance above.
• Subject to the points above, our total liability to you for anything arising from Kit is limited to the price of one month of Kit at the rate you pay. If you do not subscribe, it is limited to £10.

10. Ending these terms

You can stop using Kit at any time. We may end these terms, or your access to online features, if you seriously or repeatedly break them. Sections 2, 5, 7, 9 and 11 continue to apply after that.

11. Law and disputes

These terms are governed by the law of England and Wales. You can bring a claim in the courts of England and Wales. If you live elsewhere, you may also have the right to bring a claim in your local courts, and to rely on mandatory consumer protections of the country where you live.

12. Apple App Store users

If you downloaded Kit from the Apple App Store, the following also applies:

• The agreement. These terms are between you and Joint Effort, not Apple. Joint Effort, not Apple, is responsible for Kit and its content.
• Your licence is limited to using Kit on Apple devices that you own or control, as the App Store's Usage Rules allow.
• Maintenance and support are our responsibility, not Apple's. Apple has no obligation to maintain or support Kit.
• Warranty. If Kit fails to conform to any applicable warranty, you may notify Apple, and Apple will refund the purchase price, if any. Apple has no other warranty obligation for Kit, to the extent the law allows.
• Claims. Joint Effort, not Apple, is responsible for any claims relating to Kit. That includes product liability claims, claims that Kit fails to meet legal or regulatory requirements, consumer protection claims, and claims that Kit infringes someone's intellectual property.
• Legal compliance. You confirm that you are not in a country subject to a US Government embargo, and that you are not on any US Government list of prohibited or restricted parties.
• Third-party beneficiary. Apple and its subsidiaries are third-party beneficiaries of these terms and may enforce them against you.

13. Contact

Joint Effort Technology LTD — [email protected]