Onsen – AI for Mental Health

Onsen – AI for Mental Health

Onsen AI Limited · AI Assistant · Other · Chatbot

Onsen is a free AI companion for mental health that pairs chat, voice, journaling, and guided experiences with mood tracking in one private app.

Interface preview of Onsen – AI for Mental Health

About Onsen – AI for Mental Health

What Is Onsen

Onsen is a mobile app from Onsen AI Limited that puts an AI companion for mental health in your pocket. You talk through what's on your mind, and the guide answers in a supportive, non-judgmental way, remembering the people, feelings, and patterns from earlier conversations. Alongside the chat, Onsen bundles journaling, guided wellbeing experiences, and simple progress tracking.

The goal isn't to replace a clinician. Onsen states plainly that it can't diagnose or treat medical conditions, so it works best as a daily mental health support app for self-reflection and emotional awareness, especially alongside professional care when you need it.

Two things decide whether it fits you. It lives entirely on iOS and Android, so there's no desktop version for long writing sessions. And the free tier keeps things moving but limits how much you can chat, generate images, and use voice, but right now every account gets full access while the app is in its Early Supporter period. If you want a private space to check in with yourself between therapy sessions or after a hard day, that's the sweet spot.

Getting Started

  1. Download Onsen from the App Store or Google Play and create an account. No credit card is needed.
  2. Answer a short set of onboarding questions so the app can set up your mood check-ins and starting context.
  3. Pick your AI guide, either one of six built-in personalities or a custom one you shape yourself.
  4. Start a conversation by typing or speaking, then use the ready-made prompts when you want advice, a new angle, or a nudge to reframe a thought.
  5. Save a chat as a journal entry to keep a record, or head to Progress to build a streak, grow your garden, and log your first check-in.

Product Information

A quick look at Onsen – AI for Mental Health's pricing, supported platforms, and performance.

Free PlanYes
Paid PlansFree now; Premium pricing to be announced
PlatformiOS, Android
DeveloperOnsen AI Limited
CategoryAI Assistant · Other · Chatbot
Release DateOct 2024
Latest UpdatedSep 2026
Website Visits10.1K
Website Global Rank2.3M
API AvailabilityNo

Best for

The users, tasks, and scenarios where this tool fits best.

Users

  • People dealing with everyday stress and anxiety
  • Students and young adults
  • Busy professionals
  • People already in therapy

Tasks

  • Talking through a hard day
  • Guided self-reflection
  • Keeping a journal
  • Tracking emotional progress

Scenarios

  • A late-night spiral
  • Between therapy sessions
  • Building a daily habit

Key features

AI Chat That Remembers You

The core of Onsen is a conversation with a guide that builds a memory from your journal entries, the people you mention, and the emotions you describe. That memory is why it feels less like starting over with a chatbot each time. On the free plan the guide draws on the last 30 days of context, while Premium is set to keep your full history.

Voice Conversations

You can say your thoughts out loud and hear the answer read back, which suits moments when typing feels like too much effort. Voice input and read-aloud both work on the free plan at standard limits, and Premium raises those limits tenfold. It's the difference between a quick check-in on a walk and a full written reflection.

A Journal That Writes Itself

As an AI journaling app, Onsen lets any conversation become an entry, extracting themes, mood, and insights as it saves. Each entry can also get its own AI-generated image, created from the words and mood you wrote. That leaves you a reflective archive over time rather than a pile of loose notes.

Guided Experiences

Beyond open chat, Onsen offers guided experiences for specific goals like mood tracking, cognitive reframing, and gratitude. Each one is a short, structured session, so you have a path through a topic instead of an empty prompt. Premium is set to add advanced meditation, therapy-inspired sessions, and specialized coaching.

A Custom AI Guide

You can choose from six built-in AI personalities or design your own guide with a custom name, traits, icon, and voice. The guide carries through chat and experiences, so the tone stays consistent as you use the app. Premium unlocks the fully custom personality and extra emotive voices.

Progress Tracking

Onsen turns showing up into something you can see. A streak counts the days you check in, a garden grows as you stay consistent, and check-in scores are charted across the months. It's a light layer of motivation, but it's the part that nudges a one-off download into a habit.

Pros and cons

Pros

  • It's free to download and use, and right now the Early Supporter period unlocks all Premium features at no cost.
  • The guide builds a memory from your entries, so the AI mental health companion feels personal instead of generic.
  • Chat, voice, journaling, and guided experiences sit in one app, so you're not juggling several wellness tools.
  • Onsen is clear that it isn't a therapist, which sets honest expectations for what the AI therapy app can and can't do.

Cons

  • It runs only on iOS and Android, so there's no desktop option for longer journaling sessions.
  • It can't diagnose or treat conditions, so anyone in crisis still needs professional or emergency care.
  • Free-plan usage limits will return once paid plans launch, which caps how much you can chat, generate images, and use voice.

Frequently asked questions

Onsen is an AI wellness app for mental and emotional wellbeing. You chat or talk with an AI guide that remembers your story, explore guided experiences, keep a journal, and track how you feel over time. It's built for self-reflection and mental health support, not medical treatment.