Comparison

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.

Head to head
About

こいびと日記

Features
Read full description

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

About

Question Diary 365

Features
Read full description

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

こいびと日記3 screens
Question Diary 3654 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

こいびと日記 ships an update fortnightly, Question Diary 365 every 3 weeks. Both last shipped on November 5, 2026.

ScorecardNo meaningful differences
こいびと日記 versus Question Diary 365: the parameters behind the verdict, then further details
Parameterこいびと日記Question Diary 365
PriceFreeFree
Update frequencyFortnightly — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.017.0
Further details — not scored
Size25 MB126 MB
Age rating4+4+
DeveloperStarcrown IncMasami Mitsuta

In-app purchases

2 purchases

こいびと日記

Subscriptions2
  • Weekly Pro3 Days trial$1.997 Days
  • Yearly Pro$29.991 Year
2 purchases

Question Diary 365

Subscriptions2
  • Monthly$4.991 Month
  • Yearly$49.991 Year

Questions

Is こいびと日記 free?
こいびと日記 is free to download, with in-app purchases available.
Is Question Diary 365 free?
Question Diary 365 is free to download, with in-app purchases available.
Do こいびと日記 or Question Diary 365 have ads?
Neither こいびと日記 nor Question Diary 365 shows ads.
Which is updated more often, こいびと日記 or Question Diary 365?
こいびと日記 ships an update fortnightly, and Question Diary 365 every 3 weeks. Most recently, こいびと日記 was updated on November 5, 2026 and Question Diary 365 on November 5, 2026.

Other comparisons