Track your collection through the seasons, preserve each tree's history, share with students and teachers, and trade on Ichiba, the only marketplace built around the hobby.
Now available — free on the App Store and Google Play.

Yoi Bonsai app
Android & iOS, early summer 2026
A serious tracking app for your collection, real-time sharing with students and teachers, lineage that travels with each tree, and the only marketplace dedicated to the hobby.

Progress photos, care notes, and a complete log of styling decisions, repottings, and seasonal milestones. Set reminders for watering, fertilizing, and pruning, months or years out. The app remembers, so you can focus on the trees.

When you sell or gift a tree, you can transfer its full history, every photo, every note, every milestone, to the new owner. Bonsai live for decades; their stories should outlive any one keeper. No other app does this.

Ichiba, a marketplace built specifically for bonsai. Browse trees from enthusiasts around the country, message sellers in real time, and arrange pickup or shipping directly. No fees, no middlemen. Browse Ichiba →
Trees for sale from bonsai enthusiasts using the Yoi Bonsai app
Now available
Free to track up to 10 trees with full history and reminders, and to browse the marketplace. On iPhone and Android.