Comparison

Jカレンダー vs Simple Calendar・Schedule app

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

Head to head
About

Jカレンダー

This app offers a visually customizable calendar with Japanese holidays, lunar phases, and traditional Japanese calendars. Add photos and notes to your events, and enjoy daily quotes. It syncs with your device's calendar for seamless scheduling.

Highlights
  • Japanese holidays and traditional calendars (Rokuyo, lunar phases)
  • Photo and note customization for events
  • Daily quotes and sayings
  • Syncs with device calendar
  • Customizable visual themes
  • Recurring event scheduling
Read full description

祝日の表示はもちろん、六曜や月齢、二十四節気を見やすく表示。 冠婚葬祭や釣りの日程を決めるのにも便利です。 写真を入れられるので、紙でもらったお知らせなどを予定と一緒に登録するとさらに便利! 月表示では予定が一目でわかるようになっているので、 スケジュール管理にも使いやすい! メモを残すこともできちゃいます。 六曜や月齢表示を消すと、シンプルなカレンダーに早変わり! 上部の画像も変更できるので、自分だけの見た目のカレンダーにカスタマイズもできますよ! 日表示は見慣れた日めくりカレンダー風デザイン。 定型予定を登録できるので、 同じ予定を入れるのがとても楽チン。 今日は何の日?いい服(1129)の日! などなど、その日が何の日かも表示されます。 母の日や、土用の丑の日などもわかっちゃいます! 日替わりで素敵な格言や名言を載せているので、ちょっと見るだけでも楽しめます。 また、それぞれの日に写真やメモを入れることもできるので、ちょっとした日記がわりに使うこともできますよ! 日本人にとっての使い勝手を徹底したカレンダーアプリです。 ぜひ使ってみてください。 #ユーザー様の声 ・六曜があるのは便利。和風でさわやかなデザインも気に入りました。 ・約半年使ってみて 機能は使いやすいです。私には一番良いかも また格言のチョイスが良くて 結構見ちゃいます。 ・曜日の情報が六曜など細かいです。また標準のカレンダーと同期するから非常に便利です。満点ですよ。 ・スケジュールを入れやすいし、画像もOK!もっと早く入れていればよかった…と思っています。 ・繰り返し使いたい予定を長押しで登録しておけるのが便利です。 六曜の表示も、信心深い方ではないが、あると和を感じます。 URLスキーム:net.ysakaki.JCalendar:// #1ヶ月以上前の予定が消えてしまう場合# 「設定」アプリで「カレンダー」の「同期」という項目を「全てのイベント」に変更してください

About

Simple Calendar・Schedule app

This app offers a streamlined calendar experience, focusing on essential features for easy event management. It's designed for users who prefer simplicity and a clean interface over complex functionalities. Get organized with core calendar tools and helpful notifications.

Highlights
  • Calendar view
  • Event creation
  • Search functionality
  • Notifications
  • Holiday tracking
  • Customizable styles
  • Data backup
Features
Read full description

About the App ・ A simple and refined calendar app. ・ Focuses on "subtracting rather than adding" and has only the essential features needed for a calendar. ・ An app that pursues "Simple is best". Recommended for ・ People who want to use a calendar app easily and simply ・ People who want to use a regular calendar app ・ People who are tired of using calendar apps with complex features Features ・ Calendar ・ Events ・ Search ・ Notifications ・ Holidays ・ Styles ・ Backup

Screenshots

Jカレンダー4 screens
Simple Calendar・Schedule app4 screens

Verdict

The call

The clearest difference is in-app purchases: Simple Calendar・Schedule app at none against Jカレンダー's 1. Simple Calendar・Schedule app also leads on ratings volume (2.3K vs 27) and update cadence (weekly vs monthly). Jカレンダー's advantage is rating (4.9 vs 4.6). On price, ads, device support and iOS requirement 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. Jカレンダー sells 1 one-off in-app purchase. Simple Calendar・Schedule app asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Jカレンダー holds the better App Store score, 4.9 against 4.6. That said, the two scores are not equally well evidenced: Simple Calendar・Schedule app has 2.3K ratings behind it against 27, so its average is the more settled of the two. Written reviews complicate that: 66% of Jカレンダー's written reviews are positive against 79% of Simple Calendar・Schedule app's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Jカレンダー ships an update monthly, Simple Calendar・Schedule app weekly. The most recent releases landed on October 16, 2026 and October 17, 2026 respectively.

Scorecard6 real differences · 4 level
Jカレンダー versus Simple Calendar・Schedule app: the parameters behind the verdict, then further details
ParameterJカレンダーSimple Calendar・Schedule app
PriceFreeFree
Rating4.9 (27 ratings) — better4.6 (2.3K ratings)
Positive reviews65.5% of reviews79.1% of reviews — better
Number of ratings272.3K — better
Update frequencyMonthlyWeekly — better
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhoneiPhone, iPod — better
Requires iOS16.615.0 — better
Further details — not scored
Size22 MB61 MB
Age rating4+4+
DeveloperPiyoLog Inc.Futoshi Niiho

Customer experience

Jカレンダー

All ratings27 ratings
Positive96.3%
Neutral3.7%
Negative0.0%
Written reviews58 reviews
Positive65.5%
Neutral10.3%
Negative24.1%

Simple Calendar・Schedule app

All ratings2,271 ratings
Positive89.8%
Neutral3.8%
Negative6.4%
Written reviews330 reviews
Positive79.1%
Neutral9.4%
Negative11.5%

Bugs and requests

Jカレンダー

Not enough reviews yet to summarise bugs or requests.

Simple Calendar・Schedule app

Reported bugs

3 issues
  • Backup/restore functionality not working
  • Events disappearing from calendar view
  • Dates/times not displaying correctly

Requested features

5 requests
  • Repeat/recurring event functionality
  • Widget support for home screen
  • Ability to share calendars with others
  • Option to set custom notification times
  • More color palette choices

In-app purchases

1 purchases

Jカレンダー

One-time1
  • 広告非表示$2.99
None

Simple Calendar・Schedule app

No in-app purchases

Questions

Is Jカレンダー free?
Jカレンダー is free to download, with in-app purchases available.
Is Simple Calendar・Schedule app free?
Simple Calendar・Schedule app is free to download, with no in-app purchases.
Which has better reviews, Jカレンダー or Simple Calendar・Schedule app?
Jカレンダー is rated higher. Jカレンダー averages 4.9 out of 5 from 27 ratings, while Simple Calendar・Schedule app averages 4.6 from 2.3K ratings.
Do Jカレンダー or Simple Calendar・Schedule app have ads?
Both Jカレンダー and Simple Calendar・Schedule app show ads.
Which is updated more often, Jカレンダー or Simple Calendar・Schedule app?
Jカレンダー ships an update monthly, and Simple Calendar・Schedule app weekly. Most recently, Jカレンダー was updated on October 16, 2026 and Simple Calendar・Schedule app on October 17, 2026.

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