Comparison

ShareDiary(シェアダイアリー) vs Whatcha Diary

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

ShareDiary(シェアダイアリー)

Features
Read full description

ShareDiary は複数の相手と日記を共有できる交換日記サービスです。 家族や友だち、恋人など様々なシーンでご利用いただけます。 公式サイト https://sharediary.konnyaku256.dev/ プライバシーポリシー https://sharediary.konnyaku256.dev/privacy-policy 利用規約 https://sharediary.konnyaku256.dev/terms-and-conditions [:mav: 1.6.1]

About

Whatcha Diary

Features
Read full description

Whatcha - A group diary, built for how memories actually happen together Traditional social apps broadcast from one person to many. Whatcha is different: one group, multiple people, one shared story — built for couples, classrooms, teams, and friends who want to record memories together. 【Key Features】 ・A History Where Nothing Is Lost Every save keeps the diary as it was. See who added what, go back to an earlier version at any time, and bring two accounts of the same day together into one. ・Group-First, Not Solo-First Every diary belongs to a group. Invite the people who matter, and build one shared story together instead of broadcasting to strangers. ・Fine-Grained Permissions Control exactly who can create, read, update, or delete entries in each group — down to the individual member. ・Calendar & Card Views Browse your shared memories by month or as a scrollable feed — however you like to look back. 【Recommended for】 ・Couples who want a shared diary of their relationship ・Classrooms and teams keeping a shared log ・Friends documenting a trip together ・Anyone tired of broadcasting to an audience instead of sharing with people who matter Start your shared story on Whatcha today.

Screenshots

ShareDiary(シェアダイアリー)4 screens
Whatcha Diary3 screens

Verdict

The call

The clearest difference is update cadence: Whatcha Diary at every 6 days against ShareDiary(シェアダイアリー)'s every 2 months. On price, ads, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

ShareDiary(シェアダイアリー) ships an update every 2 months, Whatcha Diary every 6 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

Scorecard1 real difference · 5 level
ShareDiary(シェアダイアリー) versus Whatcha Diary: the parameters behind the verdict, then further details
ParameterShareDiary(シェアダイアリー)Whatcha Diary
PriceFreeFree
Update frequencyEvery 2 monthsEvery 6 days — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS15.6 — better16.0
Further details — not scored
Size32 MB84 MB
Age rating4+4+
DeveloperShuntaro ShimadaTakanori Nagashima

In-app purchases

None

ShareDiary(シェアダイアリー)

No in-app purchases

None

Whatcha Diary

No in-app purchases

Questions

Is ShareDiary(シェアダイアリー) free?
ShareDiary(シェアダイアリー) is free to download, with no in-app purchases.
Is Whatcha Diary free?
Whatcha Diary is free to download, with no in-app purchases.
Do ShareDiary(シェアダイアリー) or Whatcha Diary have ads?
Neither ShareDiary(シェアダイアリー) nor Whatcha Diary shows ads.
Which is updated more often, ShareDiary(シェアダイアリー) or Whatcha Diary?
ShareDiary(シェアダイアリー) ships an update every 2 months, and Whatcha Diary every 6 days. Most recently, ShareDiary(シェアダイアリー) was updated on November 3, 2026 and Whatcha Diary on November 5, 2026.

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