The Scientist
For explanations and facts - when you want to understand why things are the way they are.
Mind, body, and environment - in balance.
Your mental health is an interplay of three components.
Mind, body, and environment all influence one another. Rei helps you strengthen them one at a time and keep the balance. Rei is there whenever you need it, never judges, and is 100% private.
Beta
How can I start?
Right now Rei is available by personal invitation only - apply here for access to the closed beta. Rei's founders are still building the infrastructure to make Rei available to everyone.
Practice
How Rei works
You can simply start writing. Rei walks alongside you and finds the right way forward together with you. Rei has a range of abilities, among them:
01
Check-ins
Rei reads your current state and understands where you are right now.
02
Journaling & reflections
Set heavy thoughts down with Rei and get them out of your head.
03
Guided meditation
Rei helps you train yourself to bring your mind to rest.
04
Guided yoga
Rei helps you bring mind and body into harmony.
Rei
The concept
So it can always give you what you need in the moment, Rei has three characters who help you in different ways:
The Companion
For advice and the deeper questions - when you want to think things through together.
Emotional Support
For calming words - when you simply want to be heard.
Access
Free for you, built to reach everyone
Rei is free for individuals - looking after your wellbeing shouldn't depend on what you can pay. To make that sustainable, we partner with the organisations already there for people's wellbeing.
For health insurers
A private, always-there wellbeing companion for members, as part of the everyday care they already offer.
For employers
An easy, private way to make real wellbeing support available to every employee - good for your people, and for the teams they're part of.
Privacy
Private, and yours
You share personal things with Rei, so privacy comes first: fully GDPR-compliant, hosted in the EU, encrypted, no third-party tracking, no cookies, no ads. Your conversations are never analysed or sold, and you can delete everything yourself, any time.
Hosted in the EU GDPR-compliant Encrypted & private No tracking, no ads Delete anytime
FAQ
Questions, answered
What is Rei?
Rei is a warm, always-there AI companion for your mental wellbeing - someone to think out loud with, make sense of your thoughts, and grow a little every day. Rei gets to know you, listens, asks gentle questions, and draws on proven therapeutic techniques to offer small, practical steps and skills you can build over time.
Can Rei replace professional help?
No - and it isn't meant to. Rei is a companion for everyday wellbeing and self-reflection, not a doctor, therapist, or emergency service. Rei can sit alongside professional care, never replace it. If you're ever in a crisis, please contact local emergency services right away.
Is what I share private?
Yes. Privacy is the foundation. Everything is fully GDPR-compliant: your conversations are hosted in the EU, encrypted, and never sold or used for ads, and you can delete everything yourself, any time. This site itself uses no cookies and no third-party tracking.
What does Rei cost?
Rei is in a small, closed beta right now, free for invited testers. We'll share pricing openly before anything changes.
Which languages and devices does Rei support?
Rei speaks English and German today, and works on Android, iPhone, and the web.
How is Rei different from a chatbot or a journaling app?
Rei isn't a feed to scroll or a form to fill in. It's a companion that remembers your context, grows with you, and draws on real therapeutic techniques to offer small, practical steps and skills across the parts of life that shape how you feel - at your pace, without judgement.
Is Rei really free? Who pays for it?
Rei is free for individuals. We keep it that way by partnering with health insurers and employers, who make Rei available to the people they support. Your data is never sold - the partnership is about access, not your information.