Legal
Terms of service
The agreement between you and Stronge — what we owe you, what you take on, and how either of us ends it.
01 These terms
These terms are the agreement between you and Chutta Digital (Pty) Ltd (“Stronge”, “we”, “us”) for your use of the Stronge mobile app and the stronge.app website. By creating an account, joining the waitlist, or using Stronge, you agree to them. If you do not agree, please do not use Stronge.
Our privacy policy forms part of this agreement and explains what we do with your personal information. Where the two documents overlap, the privacy policy governs anything about the handling of your data.
We have tried to write this in plain language. Doing so does not make it less binding, and nothing in it removes rights you have under the Consumer Protection Act 68 of 2008 or any other law that cannot be contracted out of.
02 Who can use Stronge
You must be 18 or older to use Stronge. This is checked at sign-up and again by our database, which rejects a date of birth implying an age under 18.
You must also be able to enter into a binding contract, and you must not be barred from using the service under any applicable law or by a previous termination of your account by us.
Stronge is one account per person. Do not share your account, and do not create a second one to get around a suspension.
03 Your account
You are responsible for what happens under your account, and for keeping your sign-in details to yourself. Tell us at support@stronge.app as soon as you think someone else has access to it.
The information you give us needs to be accurate — not as a formality, but because the engine prescribes physical loading from it. A wrong body weight, a wrong date of birth or an undeclared injury produces a session built on wrong assumptions.
You can delete your account at any time from Settings → Privacy & data. It is immediate and it cannot be undone.
04 What Stronge is, and what it is not
Stronge is strength and conditioning software. It writes and adapts strength, mobility and prehab sessions around the running and riding you already do.
Stronge is not a medical device, and it is not medical advice. It does not diagnose, treat, or claim to prevent disease or injury. It is not a physiotherapist, a doctor or a substitute for either.
Your injury history drives which exercises you are given and, more importantly, which you are never given. That is exercise selection, not clinical assessment. Nothing in the app is an opinion about your medical condition.
If you are injured, in pain, or unsure whether exercise is safe for you, see a qualified healthcare professional. Do not delay getting medical advice, or disregard advice you have already been given, because of something Stronge showed you. If you think you are having a medical emergency, contact emergency services immediately.
Where you are working with a physiotherapist or coach, Stronge is built to sit alongside them. Their instructions outrank ours.
05 Physical training carries risk, and you accept it
Please read this section carefully. It concerns risk you take on personally.
Exercise carries an inherent risk of injury, and that risk cannot be removed by any app, including this one. Strength training, plyometric work, loaded movement and returning to training after an injury all carry that risk.
By using Stronge you confirm that:
- You are voluntarily choosing to take part in physical exercise, and you are medically fit to do so. If you are not sure, get cleared by a doctor first.
- You accept the risk of injury, aggravation of an existing injury, illness, or in rare cases serious harm, arising from exercise you perform.
- You will stop if something hurts, and you will use the pain flag rather than pushing through. The engine can only respond to what you tell it.
- You take responsibility for your own technique, your own environment, and your own judgement about whether a given session is appropriate for you on a given day.
You accept this risk personally, and you release us from liability for injury or harm arising from exercise you choose to perform — except where the law does not permit that release, and specifically excepting our own gross negligence, which we do not exclude and could not.
06 The Beta Team
Before general release, Stronge is offered to a hand-picked group of testers we call the Beta Team. If you are accepted, this section applies to you.
Stronge stays free for you, permanently. If you are accepted onto the Beta Team, your account keeps access to Stronge at no cost for as long as the service exists. This is a promise we have made publicly and we are bound by it here: the right we reserve in section 7 to introduce charges does not apply to Beta Team accounts, and we cannot withdraw it later by amending these terms. It attaches to your account, and it is not transferable to anyone else.
What we ask in return is honest feedback, and your understanding that a beta is a beta. Early versions may be unstable, may lose data, may change substantially, and may have features added or removed without notice. Those are the ordinary conditions of testing pre-release software and you accept them by taking part.
We may end the beta programme, or end your participation in it, at any time. Ending the programme does not end the entitlement above.
07 Fees and subscriptions
Stronge is currently free. There is no subscription, no paywall, no trial and no in-app purchase in the app today, and every feature is available to every account.
We may introduce paid plans in future. If we do:
- We will tell you before any charge applies, and you will have to actively agree to it. Continued use of a free app will never by itself be treated as agreement to start paying.
- Payment will run through Apple’s and Google’s in-app purchase systems. Their terms govern the transaction, they handle your payment details, and cancellations and refunds are requested through the store you bought from, not from us. We never see your card.
- Deleting the app does not cancel a store subscription — you cancel that in your Apple or Google account settings.
- Section 6 continues to apply to Beta Team accounts.
08 The waitlist
If you give us your email address on this website, we store it so we can tell you when Stronge opens up and to consider you for the Beta Team. We record the address, which part of the site you submitted it from, and the country your request came from.
Joining the waitlist is not a guarantee of a place on the Beta Team, and does not create an account. Ask us at support@stronge.app to remove you and we will.
09 How you may and may not use Stronge
Use Stronge for your own training. Do not:
- Reverse engineer, decompile or attempt to extract the source code, the exercise library, or the logic of the engine, except where the law expressly permits it.
- Probe, scan or test the security of our systems, circumvent authentication or rate limits, or access any part of the service you have not been given access to.
- Use automated means to access the service, scrape it, or resell, redistribute or make it available to anyone else.
- Misrepresent your age, identity or health information, or create an account for someone else.
- Upload or submit anything unlawful, defamatory, harassing, or infringing someone else’s rights.
- Use Stronge to prescribe training to another person, or to provide clinical or coaching services to third parties, unless we have agreed that in writing.
- Interfere with the service, or with anyone else’s use of it.
The engine is expensive to run. Deliberately generating sessions or AI responses at volume beyond normal personal use is a breach of these terms, and we may rate limit or suspend accounts that do it.
10 What you write, and what we may do with it
Notes on exercises, notes for your physio, feedback you send us and anything else you type stay yours. We do not claim ownership of it.
You give us a limited licence to store, process and display that content for the purpose of operating Stronge for you — showing your note back to you next time the exercise comes round, including it in your data export, and so on. That licence ends when you delete the content or your account. We do not take a perpetual, transferable or sub-licensable licence over what you write, and we do not use your notes for marketing.
You are responsible for what you submit, and you confirm you have the right to submit it.
11 Feedback
If you send us a suggestion about the product, we may act on it and build it, without owing you payment or attribution. That is the ordinary bargain of a feedback channel and it is the only way we can act on suggestions at all.
This covers ideas about the product. It does not cover your training data or your personal notes, which are dealt with in section 10 and in the privacy policy.
12 AI-generated text
Some of the text in Stronge is written by a language model: session rationales, the weekly narrative, some notification copy, and the answers in Ask Stronge. Your exercises are chosen by a deterministic engine, not by the model.
The model is constrained to the facts the engine gives it and instructed never to invent a number, an exercise or a claim. It can still be wrong, unclear or incomplete. Treat it as explanation, not as instruction, and never as medical advice. Where it disagrees with your physiotherapist, your physiotherapist is right.
Tell us at support@stronge.app if you see AI text that is wrong. That is genuinely useful to us.
13 Our intellectual property
Stronge — the app, this site, the engine, the exercise library, the brand, the name and the marks — belongs to us or our licensors. These terms give you a personal, limited, revocable, non-transferable licence to use the app on devices you control, for your own training. Nothing more is granted, by implication or otherwise.
The exercises themselves draw on published rehabilitation and sport-science research. That research belongs to its authors; our selection, prescription logic and presentation of it are ours.
14 Devices and third-party services
Stronge reads from Apple Health and Health Connect, which in turn receive data from whatever devices you have connected — Garmin, Apple Watch, Strava, Coros, Polar, Suunto, Oura and others. We are not affiliated with those companies, we have no control over them, and your relationship with each of them is governed by their own terms.
If one of them changes, breaks or stops sharing data, your training may stop arriving automatically. We will do what we reasonably can, but we cannot promise a third party’s service will keep working. You can always enter a session by hand.
15 Availability and changes to the service
We aim to keep Stronge running, but we do not promise uninterrupted availability. Maintenance, outages at our providers, and faults will happen.
We may change, add or remove features. Where a change materially reduces what the service does for you, we will tell you. We may also stop offering Stronge altogether — if we do, we will give you reasonable notice and time to export your data before it goes.
16 Ending this agreement
You can stop at any time by deleting your account in the app. That deletes your data, as described in the privacy policy.
We may suspend or end your access if you materially breach these terms, if you are not eligible to use Stronge, or if we are required to by law. Except where a breach is serious or ongoing, or where the law requires immediate action, we will tell you what the problem is and give you a fair chance to put it right before we act. If we do end your access, we will give you a reasonable opportunity to export your data unless the law prevents it.
The sections on assumption of risk, liability, indemnity and governing law survive the end of this agreement.
17 What we do and do not promise
Please read this section carefully. It limits what you can hold us to.
We provide Stronge with reasonable skill and care, and we stand behind the statements we make about what it does. Beyond that, and to the fullest extent the law allows, Stronge is provided as it is. We do not warrant that it will be uninterrupted, error-free, or that it will produce any particular result for you.
Specifically, we do not promise that using Stronge will prevent an injury, resolve an existing one, or improve your performance. Training outcomes depend on you, your body, your history, your other training and factors none of us control.
Nothing here excludes a warranty or right that the Consumer Protection Act or any other law gives you and does not allow us to exclude.
18 Limitation of our liability
Please read this section carefully. It limits the amounts and kinds of loss we are responsible for.
To the fullest extent the law allows, we are not liable for indirect or consequential loss, loss of profit, loss of opportunity, or loss of data, arising from your use of Stronge.
Where we are liable, our total liability to you for all claims in any twelve-month period is limited to the greater of the amount you paid us in that period, or R2,000. Since Stronge is currently free, and permanently free for the Beta Team, that floor is what applies to most users — it is set deliberately rather than left at zero.
What we do not limit. Nothing in these terms excludes or limits our liability for death or personal injury caused by our negligence, for fraud or fraudulent misrepresentation, for gross negligence, or for anything else that the law does not permit us to limit. If any part of this section is found unenforceable, the rest of it still applies.
19 Your indemnity to us
Please read this section carefully. It may require you to cover costs we incur.
If someone brings a claim against us because of something you did — using Stronge in breach of section 9, submitting content you had no right to submit, or breaking the law — you agree to cover the reasonable losses, damages and legal costs we incur as a direct result.
This does not apply to anything caused by our own act or omission, and we will tell you promptly about any claim and let you have a say in how it is handled.
20 If you got Stronge from the App Store or Google Play
These additional terms apply, and Apple in particular requires them.
- This agreement is between you and us. It is not with Apple or Google, and they are not responsible for Stronge or its content.
- Apple and Google have no obligation to provide any maintenance or support for Stronge. If you need help, come to us at support@stronge.app.
- If Stronge fails to conform to any warranty that applies, you may notify Apple and Apple will refund the purchase price, if any. To the extent the law allows, Apple has no other warranty obligation for Stronge.
- We, not Apple or Google, are responsible for addressing any claim relating to Stronge, including product liability claims, claims that it fails to conform to a legal requirement, and claims under consumer protection law.
- We, not Apple or Google, are responsible for investigating and resolving any third-party claim that Stronge infringes that party’s intellectual property rights.
- You confirm you are not located in a country subject to a relevant embargo and are not on a prohibited-parties list, where the store’s terms require that.
- Apple and its subsidiaries are third-party beneficiaries of these terms and may enforce them against you.
- Your use of the app must also comply with the applicable App Store or Google Play terms.
21 Privacy
What we collect, why, who processes it, how long we keep it and how to export or delete it are all set out in our privacy policy, which forms part of this agreement.
The short version: your health data is processed on the basis of your explicit consent, we never sell it, and export and deletion are both buttons in the app rather than requests you have to make of us.
22 Changes to these terms
We may update these terms. The effective date at the top of this page always reflects the current version.
Where a change is material we will tell you in the app or by email before it takes effect, and give you a reasonable chance to read it. If you do not accept a change, your remedy is to stop using Stronge and delete your account.
One exception, stated plainly: we cannot use this section to take away the permanent free entitlement in section 6.
23 Governing law and disputes
These terms are governed by the law of the Republic of South Africa, and the South African courts have jurisdiction.
Come to us first. If something has gone wrong, email support@stronge.app with what happened and what you would like done about it. We will engage properly and try to resolve it within 30 days. Most things end here.
If that does not resolve it, either of us may take the matter to court. We have deliberately not required you to arbitrate, and you keep your right to bring or join a collective action. Nothing here stops you approaching the National Consumer Commission or any other body with jurisdiction, and nothing stops either of us seeking urgent interim relief from a court where that is genuinely needed.
24 General
Whole agreement. These terms and the privacy policy are the whole agreement between us about Stronge, and replace anything said beforehand.
Severability. If any part of these terms is found unenforceable, that part is removed and the rest continues to apply.
No waiver. If we do not enforce something straight away, we have not given up the right to enforce it later.
Assignment. You may not transfer your rights under these terms. We may transfer ours to a successor if the business is sold or reorganised, and your rights, including the Beta Team entitlement, transfer with it.
Notices. We may contact you in the app or at the email address on your account. Keep it current. You can reach us at support@stronge.app.
25 Contact us
Chutta Digital (Pty) Ltd
213 Main Road, Three Anchor Bay, Cape Town, 8005
Questions about these terms, about your account, or about anything Stronge does are all welcome at that address.