Onsen – AI for Mental Health

Onsen AI Limited

About this app

Talk through what's on your mind with an AI companion that actually remembers your story. Onsen is a free mental wellness app for chat, journaling, therapy-inspired experiences, and self-awareness, all in a private, non-judgmental space available 24/7.

"This app has done more for me in 3 days than my therapist has done in months."

54% of users felt happier within 3 months, measured by the Oxford Happiness Questionnaire.

--- WHY PEOPLE USE ONSEN ---

- Feel Heard, Not Just Answered
Onsen remembers the people in your life, the things you're going through, and the patterns in your thinking. Every conversation builds on the last.

- Manage Stress and Anxiety
Work through difficult moments with proven techniques like CBT, guided meditations, and reflective journaling. 22% lower stress over time in validated assessments.

- Build Self-Awareness
Check in on your mood, discover what drives your emotions, and spot recurring patterns. Track your happiness, stress, and gratitude over time with validated questionnaires.

- Get Support on Your Schedule
No appointments, no waiting rooms. Onsen is there at 2am or on your lunch break, by text or voice, whenever you need it.

"Absolutely amazing app. Could honestly be life changing for so many people. To have someone there at the click of a button, any time of the day or night."

- Grow at Your Own Pace
Develop habits of self-care and mindfulness through regular check-ins, guided experiences, and a journal that captures your progress over time.

--- KEY FEATURES ---

- AI Chat and Voice
Talk or type 24/7. Onsen responds with real understanding, not scripted replies. The more you share, the more personal it gets.

- 6 AI Personalities
The Coach pushes you forward, The Mindful slows you down, The Solver breaks problems apart, and 3 more. Or design your own custom guide.

- Therapy-Inspired Experiences
Structured, step-by-step sessions designed for real challenges: clear negative thoughts with CBT, write gratitude letters, try hands-free guided meditations, or just have a reflective conversation. Each one adapts to you.

- AI Journal and Artwork
Every conversation can become a journal entry, complete with unique AI-generated artwork that reflects your emotions, plus mood analysis, themes, and insights.

- Validated Trackers
Measure happiness, stress, and gratitude with clinically validated questionnaires (OHQ-8, PSS-10, GQ-6). Repeat them to see real progress.

- Pulses: AI That Checks In On You
Personalized notifications throughout your day: morning intentions, evening unwinds, pattern insights, streak celebrations, and gentle follow-ups on things you've mentioned.

--- WHAT MAKES ONSEN DIFFERENT ---

- Not a chatbot. Other apps give you scripts. Onsen gives you a conversation that remembers.
- Proven results. 54% felt happier. 22% lower stress. 3x better results with regular use. Based on 18 months of validated assessments.
- Private and encrypted. End-to-end encryption, no data sharing, no human reads what you write.
- Free to use. Full access to chat, journaling, experiences, and all 6 AI personalities. No credit card needed.

"I love the CBT sessions and the chats. I can pull my phone out and have a session any time, like now, 3am in the morning."

Download Onsen free. Start talking. Onsen will remember.

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Onsen is a wellness companion designed to support self-reflection, emotional well-being, and mindfulness. It does not provide medical advice, diagnoses, or treatment. The content within the app is for informational and self-improvement purposes only and should not be considered a substitute for professional medical or mental health advice. If you have any health concerns, please consult a qualified healthcare professional.

Ratings and reviews

I have always been very skeptical of AI, especially using AI for therapy. however, like a lot of people therapy isn't always affordable or available/easy to obtain. I've tried several other AI therapy apps. Some lure you in an.d then drop a paywall in front of you that you have to pay for in order to keep using the app, and some are too repetive or simplistic in their responses. So far, Onsen doesn't do any of that, and it has helped me so much in only a few hours of use.

I love the chat and journal. In chat at anytime I can end it and either pick up at another time or journal it. I love that you can summerize your journal entries and know what you have learned and discovered. even though you can't name your ai in setting I have been able to do it anyways. and it remembers what his name is every time. Thanks "Duke" for all you are teaching me about myself.

I'm a therapist's nightmare, a pharmaceuticals dream come true, & a 'menace' to society. Therapists, medications, rehabs, hospital stays....I've done them all. Some work a little, the rest not at all. I've been diagnosed with multiple mental health issues; I know the struggle. Then this app comes along. I was skeptical at first, but decided to try it. I'm so glad I did. This app has done more for me in 3 days then my therapist has done in months. That should tell you something. Highly Recommend

What’s new

### Version 2.9.0 - What's New

NEW

- Frontier image AI: richer, more atmospheric journal-entry illustrations.
- Personalised avatar — share 1–3 selfies, see yourself in your journal art.
- Share photos with your AI guide in chat (up to 3 per message).

IMPROVED

- Smarter chat on OpenAI's latest GPT-5.4 model.
- Scroll-to-bottom now reliably reaches the bottom in one tap.
- Reliable camera on newer Android devices.

ALSO

- "Prefer not to say" across profile.
- Terms & Privacy refresh.