usagiDiary vs MoonBun
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
usagiDiary
Easily track your rabbit's daily health and care activities. Monitor food intake, weight, droppings, and more with customizable categories and a visual calendar. Get deeper insights with premium features for long-term health tracking.
- Daily health logging for rabbits
- Customizable care categories
- Calendar view of entries
- Visual weight tracking chart
- Support for multiple rabbits
- Birthday and anniversary celebrations
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"Is my rabbit eating less than usual?" That small observation could be the first step to protecting your rabbit's health. usagi Diary makes daily care visible and helps you spot changes early. [Made for rabbits - done in 30 seconds] Food amount, weight, droppings, urine, water intake, grooming, vet visits, medication, and diary. 9 categories designed just for rabbits. No unnecessary steps, so you can keep it up every day. Reorder the categories or hide the ones you don't need. Customize it to fit your routine. [Calendar view for the full picture] Every entry shows up as a marker on the calendar. Tap a date to instantly see that day's records. Perfect for preparing before your next vet visit. [Weight chart catches changes] Track your rabbit's weight over time with a visual chart. Color-coded zones based on veterinary guidelines show you at a glance what to watch for. Charts up to 1 month are free. [Multiple rabbits welcome] Register as many rabbits as you like. Switch between them with one tap and manage each health record separately. [Celebrate birthdays and anniversaries] "She turns 3 today!" "100 days since coming home!" Birthdays, anniversaries, and milestones are celebrated automatically. Your daily entries become memories too. [Premium for deeper insights] - Weight chart from 3 months to all time - Breed-specific growth curves for comparison - Water intake chart All recording features and the weight chart up to 1 month are free. Start with your first entry today. Languages: English / Deutsch / 日本語 / 한국어
MoonBun
This app centralizes all rabbit care information, including feeding logs, health observations, and vet details. Set reminders for routines and share care plans with household members or boarding facilities. Access educational resources for common bunny care questions.
- Daily care logging (feeding, health, weight)
- Customizable reminders for routines
- Health and weight trend tracking
- Vet visit and medical record storage
- Household care sharing
- Boarding facility handoff tools
- Rabbit care educational resources
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Rabbit care gets scattered fast. Feeding notes live in one place, reminders in another, and the vet details are somewhere in a group text. MoonBun brings it all together in one app built specifically for bunny households. KEEP DAILY CARE ON TRACK Log feeding, hay, water, litter, behavior, weight, medications, and health observations. Set reminders for routines and one-time care tasks, then see what is done and what still needs attention. UNDERSTAND HEALTH OVER TIME Review weight trends and care history so changes are easier to spot. Keep vet visits, medical records, contacts, documents, photos, milestones, and notes close when you need them. SHARE CARE WITH YOUR HOUSEHOLD Invite the people who help care for your rabbits. Everyone can stay in sync without relying on memory or chasing updates through a group chat. MAKE BOARDING HANDOFFS CLEARER Share care plans and important details with trusted facilities. Follow updates, photos, messages, and care logs during a stay, then keep the summary with your rabbit’s history. LEARN AS YOU GO Browse rabbit-specific resources for common questions about health, diet, behavior, grooming, housing, and everyday bunny life. MoonBun is built by bunny parents for bunny parents. It handles the serious details without making rabbit care feel cold or clinical.
Screenshots
Verdict
The clearest difference is rating: usagiDiary at 5.0 against MoonBun's 1.0. usagiDiary also leads on review sentiment (42% vs 0%) and update cadence (weekly vs every 2 months). MoonBun's advantage is in-app purchases (none vs 4). On price, ratings volume, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. usagiDiary sells 4 in-app purchases, starting at $2.99 per month. MoonBun asks for nothing beyond the download.
usagiDiary holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews point the same way: 42% of usagiDiary's written reviews are positive against 0% of MoonBun's.
usagiDiary ships an update weekly, MoonBun every 2 months. The most recent releases landed on October 3, 2026 and October 2, 2026 respectively.
| Parameter | usagiDiary | MoonBun |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 42.1% of reviews — better | 0.0% of reviews |
| Number of ratings | 1 | 1 |
| Update frequency | Weekly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | Free — better |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 16.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 101 MB | 17 MB |
| Age rating | 17+ | 4+ |
| Developer | RYUNOSUKE OTA | STUBBORN MULE SOFTWARE LLC |
Customer experience
usagiDiary
MoonBun
In-app purchases
usagiDiary
- usagi Diary Premium$2.991 Month
- うさぎDiaryプロプラン$5.991 Month
- usagi Diary Premium(Annual)$19.991 Year
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- うさぎDiaryプロプラン$49.991 Year
MoonBun
No in-app purchases








