こいびと日記 vs Question Diary 365
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
こいびと日記
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Koibito Diary is a gentle 365-day journal for writing to, or about, someone you love. What you can do: - Answer one daily prompt at any length you like - Record your mood in five levels and attach one photo - Review your streaks and monthly flow on the calendar - Look back through recent memories and small signs Koibito Pro unlocks: - PDF export for a full year of entries - Custom prompts - All themes Koibito Pro is an auto-renewable subscription with weekly and yearly plans. The price and renewal period are shown in the app and on the App Store purchase confirmation screen before purchase. Purchases can be restored with your Apple ID. The app uses Apple's standard EULA and includes a Privacy Policy link in the app. Koibito Pro offers weekly and yearly auto-renewable plans. Terms of Use (Apple Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://starcrown.co.jp/privacy
Question Diary 365
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Every year, the same questions return. And because the questions stay the same, you can see how you've changed over time. Question Diary 365 is a journaling app where you simply answer a daily question. When the same question appears again a year later, you may notice how your thoughts, feelings, or life have changed. Looking back at your entries from previous years can be a rewarding experience. ## Features ### Daily Questions Answer one question each day. An easy way to build a journaling habit. ### Compare Across Years View entries from the same day side by side across different years. See how you've grown and changed over time. ### Photo Journal Add up to 4 photos to each entry. ### Tags & Templates Organize entries with tags and save frequently used text as templates. ### Reminders Set daily reminders at a time that works for you. ## Subscription With a subscription, you can unlock: * Custom questions * Sync across iPhone, iPad, and Mac * Custom themes and fonts ## Perfect For * Anyone who wants to keep a journal * People who want to track personal growth * Those who never know what to write about * Anyone who enjoys looking back on past memories Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
こいびと日記 and Question Diary 365 are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. こいびと日記 sells 2 in-app purchases, starting at $1.99 per 7 days and Question Diary 365 sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
こいびと日記 ships an update fortnightly, Question Diary 365 every 3 weeks. Both last shipped on November 5, 2026.
| Parameter | こいびと日記 | Question Diary 365 |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 25 MB | 126 MB |
| Age rating | 4+ | 4+ |
| Developer | Starcrown Inc | Masami Mitsuta |
In-app purchases
こいびと日記
- Weekly Pro3 Days trial$1.997 Days
- Yearly Pro$29.991 Year
Question Diary 365
- Monthly$4.991 Month
- Yearly$49.991 Year









