Grow Your
Inner Forest.
Be the parent you always needed. Record small sparks, nurture your inner child, and meet Mochi — your emotion-aware companion.
Available on iOS · Android coming soon
Why UnderTree?
Micro-Journaling
Capture small "Sparks" of joy or "Golden Hours" through simple, guided AI chats. No pressure, no blank page.
Meet Mochi
Your pet senses your moods, explores the world when you're in bloom, and brings back souvenirs for the soul.
Privacy First
No accounts, no ads. Your inner forest is your private sanctum — encrypted and stored only on your device.
AI Reflection
Your messy thoughts gently organized into beautiful, private diary entries. Feel heard, seen, and nurtured.
A Personal Note from the Creator
I built UnderTree not just as a developer, but as its very first resident. Like many of you, I've had those long nights where my thoughts felt too heavy and the world felt too loud. I needed a sanctuary where I could simply be — without judgment, without social pressure, and without noise. I wanted a companion to grow with, so I created Mochi, and planted this digital tree.
My only hope is that UnderTree can offer you a sliver of light. I want you to feel heard, seen, and nurtured, even in your quietest moments of exhaustion.
There is a quiet wish I hold: If the day comes when you no longer open this app, I won't be sad. I'll be proud. Because it means you've found the strength to stand on your own. It means you've become your own forest, and you no longer need the shade of this tree to feel safe.
Until then, UnderTree is here. Let's grow, one “Seed of Hope” at a time.
The UnderTree Team 🌿
Easy Start
No login required. Start your self-care journey with just one tap.
Private AI
US-based AI models. No data retention, no model training on your thoughts.
Zero Tracking
No ads, no third-party trackers. Your sanctuary is yours alone.