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
Now on Android & iOS
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.

Every tree keeps a journal: photos and notes grouped by day, with its care, reminders, and details one tap away. Home shows what is due next across the collection. Set reminders for repotting, 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.

Collect photos from any of your trees into albums: a club show, one tree's progression over the years, your favourites. Reorder them, pick a cover, and present the album full screen with each tree's name and size. Free for everyone.

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.