Help & FAQ
Straight answers about ChallenGYM, the free app for personal trainers — before you sign up and after.
Is ChallenGYM really free?
Yes. Every feature you see today is free for life: no subscription, no paid tier, no credit card and no trial that runs out. There are no ads in the app and we never sell your data. If we ever add optional paid extras, they will be clearly marked and will never take away what you already use for free.
Is there a limit on the number of clients?
There are no per-client fees and no paid plans that unlock more clients. A technical safety limit of 10,000 active clients per coach applies — far more than any personal trainer coaches at once.
Who is it for?
Personal trainers, online coaches and fitness instructors — working solo, in a gym or online — and their clients. Coaches build plans and follow progress; clients get their plan, sign their forms and send daily check-ins from their phone.
How do my clients join?
Add a client in the app and share the invite code by WhatsApp or any messaging app. Your client downloads ChallenGYM, taps “I have an invite code from my coach”, signs up and lands straight in their plan. The code is valid for 14 days and you can re-issue it.
How does the health questionnaire work?
When a client joins, they answer a PAR-Q-style health questionnaire and sign your training terms on their phone. You see the signed, dated copy and any answer that needs attention, and the client stays flagged until you record medical clearance. The questionnaire supports your judgement; it does not replace a medical assessment or the legal requirements that apply where you work.
Can I give my clients nutrition plans?
ChallenGYM gives you general healthy-eating guidance for healthy adults — calorie and macro targets and a daily menu built from a short questionnaire. It is not a diet, not medical nutrition therapy and not a substitute for a registered dietitian. In many countries personalised diet prescription is reserved for licensed professionals, so stay within your scope of practice and refer clients with medical conditions.
Where is my data stored? What about the GDPR?
Data is stored on Amazon Web Services servers in Israel, a country the European Commission recognises as providing an adequate level of data protection. Health questionnaires and signed forms are encrypted at rest. We do not sell data, show ads or use third-party marketing trackers. You can ask for a copy of your data, correct it or delete it — the Privacy Policy explains your rights under the GDPR and other local laws.
Who can see my clients’ data?
You and the client concerned. A client sees their own plan, forms and check-ins; a coach sees the clients they coach. Our team accesses data only when needed to provide support or keep the service secure.
Which devices does it work on?
iPhone (App Store) and Android (Google Play). One account works on both.
How do I delete my account?
In the app: Account → Delete account. It is immediate and permanent. Can’t access the app? Send us a request through the feedback form and we will delete it for you. All the details are on the “Delete account” page.
How do I contact you?
Use the feedback form on this site or in the app — ideas, bugs, questions or praise. We read every message and reply by email.