BonsaiDiary vs Yoi Bonsai
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
BonsaiDiary
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Your bonsai have a story. What isn't documented today is gone forever. Bonsai Diary preserves the history of every tree you care for ā beautifully simple, works offline from day one. Keep track of every bonsai's journey ⢠Log care entries and photos for each bonsai ⢠Record care tasks for multiple bonsai at once ⢠Filter by care type, species or custom tags ⢠See which bonsai need fertilising, repotting or a photo update at a glance Pot catalogue for your collection ⢠Catalogue bonsai pots with photos, dimensions and provenance ⢠Assign pots to individual bonsai ⢠Keep your pot collection organised at a glance Personalised diagnosis for your bonsai ⢠Describe a symptom or share a photo to receive a tailored diagnosis ⢠Recommendations based on your bonsai's full care history, local weather and location ⢠Specific advice for your bonsai ā not generic answers Virtual repotting and pot advice ⢠Preview your bonsai in a new pot before committing ā AI-generated from your own photo ⢠Get AI-powered pot suggestions tailored to your bonsai's shape and style ⢠Save the results you like directly to your bonsai's care history Share and preserve your bonsai's history ⢠Export the full growth history as a PDF ⢠Share a bonsai's development publicly via QR code or link ⢠Attach NFC tags to your pots ā tap your phone, open the bonsai profile instantly Your data, your control ⢠Full backup and restore ā no lock-in ⢠Works completely offline ⢠Optional cloud sync across devices (Premium) Try Bonsai Diary free for 4 weeks ā no restrictions, no credit card required. Basic plan: ā¬9.99/year ā all local features Premium plan: ā¬19.99/year ā adds cloud sync and public sharing AI-powered features (diagnosis, virtual repotting, pot advisor) run on AI Credits, included with every plan. Terms of Use: https://data.bonsaidiary.app/docs/terms_en.html
Yoi Bonsai
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Yoi Bonsai is the all-in-one companion for serious and casual bonsai growers. Keep a private journal of every tree: photos through the seasons, repotting and pruning notes, reminders for the work ahead, albums to show off your best work, and AI summaries of years of entries. Free to download. Track up to 10 trees, browse the Ichiba marketplace, and message sellers about trees you'd like to add to your collection ā no subscription required. Upgrade to Premium for unlimited trees, AI features, the full marketplace experience, and sharing tools you'll actually use. WHAT YOU CAN DO Track your trees ⢠Each tree: its photo, what needs doing, then a journal of notes and photos by day ā as a timeline or a photo grid ⢠Add a note, a photo, or both in one tap; back-date and edit a whole day at once ⢠Tree info keeps species, size, pot, age and repotting date on one page ⢠Home shows what is due next, with a big two-column gallery below Albums ⢠Collect photos from any of your trees ā a club show, one tree's progression, your favourites ⢠Reorder, choose a cover, add photos straight from a tree's journal ⢠Present full screen with the tree's name and size on every photo ⢠All trees builds itself from your cover photos Reminders that respect how bonsai actually works ⢠One simple list grouped by month, overdue first; tick things off with undo ⢠Recurring monthly reminders for the work you do every year (repot, fertilize, wire-off, defoliate) ⢠Single-tree or multi-tree reminders ā fertilize the whole back bench in one tap ⢠Completing a reminder writes a journal entry on each tree, so your history stays in sync AI-powered summaries (Premium) ⢠A clean, readable summary of any tree's history from its journal ā perfect for remembering what you did three years ago Ichiba marketplace ⢠Browse trees for sale from other growers ⢠Message sellers directly to ask questions before buying ⢠Premium subscribers can list their own trees, including AI-assisted listing copy ⢠Tree transfers move ownership cleanly with full history intact Sharing and collaboration (Premium) ⢠Share trees with another grower ā read-only or full edit access ⢠Transfer trees permanently when you sell, gift, or downsize ⢠Built for instructor / student workflows on the same trees Privacy first ⢠Your trees, photos, and notes are yours alone unless you choose to share ⢠No ads, no tracking pixels, no selling your data ā ever ⢠Sign out wipes the device; delete your account and we anonymize the record PLANS Free ⢠10 trees ⢠Photos, journal, reminders ⢠Albums ⢠Browse Ichiba and message sellers ⢠Buy trees from other growers Premium (monthly or annual) ⢠Unlimited trees ⢠AI tree summaries and listing copy ⢠List trees for sale on Ichiba ⢠Share and transfer trees with other growers ⢠Direct messaging beyond the marketplace If Premium expires, everything stays. After a 7-day grace period the first 10 trees you created remain editable and the rest become read-only until you renew or trim back. WHO BUILDS THIS Yoi Bonsai is built and maintained by Lonnie Bowling ā a working bonsai enthusiast. It is run as a service to the bonsai community, not a profit-maximizing business: the best possible platform, a reasonable subscription to develop and maintain it, and a contribution to the hobby and the art. These choices are deliberate: ⢠Ichiba charges zero fees. Sellers keep 100% of the sale. ⢠Subscription fee held or lowered as the goal ā never raised just to chase profit. ⢠No ads. No tracking pixels. No selling your data ā ever. ⢠One-tap export of every tree, log entry, and reminder, plus bulk photos at original quality. ⢠Real questions reach a real person. 3ā5 business days, often faster. ⢠If the app is ever discontinued, you get 90 days notice and a final export. Cancel anytime through your App Store subscriptions. Auto-renews unless cancelled. āāā Terms of Use (EULA): https://yoibonsai.com/terms Privacy Policy: https://yoibonsai.com/privacy
Screenshots
Verdict
The clearest difference is update cadence: BonsaiDiary at every 10 days against Yoi Bonsai's every 3 weeks. BonsaiDiary also leads on device support (3 vs 1) and iOS requirement (15.5 vs 18.0). On price, ads and in-app purchases there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. BonsaiDiary sells 6 in-app purchases, starting at $9.99 per year and Yoi Bonsai sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
BonsaiDiary ships an update every 10 days, Yoi Bonsai every 3 weeks. The most recent releases landed on October 31, 2026 and October 28, 2026 respectively.
| Parameter | BonsaiDiary | Yoi Bonsai |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 10 days ā better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod ā better | iPhone |
| Requires iOS | 15.5 ā better | 18.0 |
| Further details ā not scored | ||
| Size | 54 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Thomas Krebs | Diemus, Inc. |
In-app purchases
BonsaiDiary
- Bonsai Diary Basic$9.991 Year
- BonsaiDiary Premium$19.991 Year
- 5 BonsaiDoktor Diagnoses$0.99
- AI credits 16-pack$2.99
- Image Pack (+500 Photos)$2.99
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- AI credits 30-pack$3.99
Yoi Bonsai
- Premium Monthly$4.991 Month
- Premium Annual$49.991 Year






