A friendly, empathetic and professional companion for 24/7 personalised support at your fingertips.
About Us
Jan on Health (JoH) helps people make better health and wellbeing choices through simple, reliable guidance that fits into everyday life.
We believe that health support should be easy to access, practical, and grounded in real evidence—not overwhelming, judgemental, or hard to sustain. JoH is built to support long-term habit change by meeting people where they are and helping them take small, meaningful steps forward.
Our approach focuses on clarity, trust, and usefulness. We aim to share health knowledge in a way that is understandable, relevant, and immediately actionable, while respecting that everyone's health journey is personal and different.
JoH — Your Health & Wellbeing Companion on WhatsApp
JoH is a personal health and wellbeing companion that works entirely through WhatsApp.
No apps to install. No dashboards to manage. Just a supportive conversation, available whenever you need it.
JoH gets to know you over time—your goals, habits, preferences, and health interests—and uses that understanding to personalise guidance and companionship. You can ask questions, explore topics you care about, and receive practical support that adapts as you do.
JoH supports you with:
Personalised health and weight-loss support
Clear, practical answers to health and wellbeing questions that fit your life
Nutrition guidance, meal ideas, and simple weekly plans
Guidance on sleep, exercise, supplements, and lifestyle choices
Habit-building support that fits into real routines
Progress check-ins, motivation, and gentle accountability
Focus on healthspan, not just lifespan
Evidence-based health guidance
JoH is designed to be friendly, empathetic, professional, supportive, and non-judgemental, while remaining grounded in evidence-based health principles. It is transparent about being AI-powered and is not a replacement for medical professionals, but a tool to help you understand your health better and make more informed choices.
Your health companion on WhatsApp.
Real conversations. Personal goals. Meal plans and habits — no app download required.
Try Standard free for 30 days, then choose the plan that fits.
Essential
R79 / month
Everything you need to live a healthy life.
Best for: Be informed and learn healthy habits.
Includes:
Unlimited chat with JoH
Deeply understand your health and habits
Understand voice notes
Upload photos/images to analyse (e.g. food, labels, medication)
Upload documents to analyse (e.g. medical records, blood tests)
Health tips
Weekly health articles
Assist with plans (meals, exercise, sleep, weight management, recovery)
Monthly chat summary
Generate voice notes on request
Support
Standard
Recommended
R199 / month
A companion that adapts to you.
Best for: Staying accountable, sharing your data, and getting the most from your companion.
Everything in Essential, plus:
Weekly chat summaries
Goal setting and tracking
Monthly goal progress reports
30 days on Standard — on us.
New members get the full Standard experience during trial: weekly check-ins with your companion, deeper personalisation, and everything JoH can do. When trial ends, downgrade to Essential (R79) or stay on Standard (R199) — your choice.
You only need a smartphone with WhatsApp running. You do not need to install a separate app.
Yes. Upgrade or downgrade when your billing period renews. Type subscribe in the WhatsApp chat to manage your plan.
You must select a plan — Essential or Standard — to continue using the health companion. If you don’t subscribe, access pauses until you activate a plan.
JoH is a health and wellbeing companion — not a medical device, diagnostic tool, treatment tool, or medical professional. See our Terms of Service for details.
JoH uses artificial intelligence as a foundational tool to support our users.
All guidance provided through JoH is grounded in established, evidence-based health principles. We actively review, curate, and structure the information that JoH generates, ensuring it aligns with credible research and practical, real-world health advice.
AI helps JoH:
Combine trusted health research with practical insights from people who want to share knowledge and help others
Personalise guidance based on your goals, habits, and interests
Make complex health information easier to understand and apply in daily life
Suggest relevant topics, questions, and content that may be useful to you
AI does not replace human judgement, medical professionals, or personalised medical care. JoH is transparent about being AI-powered and is designed to support understanding, learning, and habit-building—while encouraging informed decisions and, where appropriate, combining them with professional medical advice.
Our priority is trust, clarity, and usefulness. AI is simply one of the tools we use to deliver those values at scale.
Your data privacy matters to us
JoH is built by VaultAir Systems — a small, founder-led team. Many of our earliest users are friends, family, and colleagues — and our founders and staff use JoH themselves. We treat your health conversations the way we would want our own to be treated: with care, restraint, and real accountability.
In brief, here is how we protect your data:
Access to your data is limited to authorised, trusted VaultAir personnel who need it to operate or support the Service
We create audit trails for data access and review them to guard against unwarranted access
When we investigate bugs or support issues you report, we work from anonymised or minimised data wherever possible
We never sell your personal information, and we do not share your data with third parties for their own purposes without your explicit consent
We do not use your health information to advertise products or services to you
Health-related information is treated as sensitive data, with encryption in transit and at rest
We do not permit your conversations or health information to be used to train third-party AI models
You can request access to, correction of, or deletion of your data at any time
Short-term health context expires automatically — we do not keep everything forever
WhatsApp phone numbers are mapped to internal identifiers so they are not stored directly in core conversation tables
We use trusted subprocessors (such as cloud hosting and AI providers) only to deliver the Service, with due diligence — not so they can use your data for their own marketing
JoH is a wellbeing companion, not a hospital, insurer, or medical provider — we apply privacy standards suited to sensitive health conversations
