Onsen is a free AI-powered companion designed to support mental and emotional wellbeing. It offers personalized guidance, journaling, and self-reflection tools in a private, non-judgmental space available 24/7. The app adapts to your patterns and story, providing tailored conversations and prompts. Features include an AI journal that turns conversations into entries with artwork and mood analysis, voice input for hands-free interaction, and guided experiences for stress, anxiety, and mindfulness. Onsen remembers your history to offer increasingly personalized insights. Based on user data, 54% of users felt happier within three months. While not a replacement for professional therapy, it serves as a daily companion for emotional awareness and growth. The app is free to download with an optional Premium plan for higher limits and exclusive features.