Comparison

Jカレンダー vs TOIDO

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
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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

TOIDO

Features
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Your to-do list should be the answer to a question. When everything feels urgent and nothing moves forward, it's usually because your tasks have drifted away from why they exist. TOIDO is a to-do app that starts with the question. You frame the real issues as questions, hang tasks beneath them, and focus on the few questions that actually change things. WHY IT'S DIFFERENT • Start with the question Write issues as questions ("How do we…?", "Is it true that…?") and give each one a working hypothesis. Tasks become the moves that test that hypothesis — not a pile of disconnected chores. • Prioritize by impact, not urgency Rank issues by leverage — how much changes once the question is answered. Pick one or two questions to own this week and go deep. • GO — today's moves first Launch straight into your open to-dos, paired with the questions they serve. Today's moves sit on top, ordered by impact. • Answer the question When the work is done, turn your hypothesis into a conclusion and close the question for good. Answered questions stay, with their answers. • Inbox — capture without sorting Dump any thought straight into the Inbox. Later, ask "what's the question?" and connect it to an issue — or let it go, guilt-free. • Weekly review Clear floating tasks, revisit your questions, choose next week's focus. Anything you drop is logged and can come back anytime. • iCloud sync Your issues and tasks stay in sync across iPhone and Mac on the same Apple ID. • English & Japanese. Light & dark. Sidebar and keyboard shortcuts on Mac. You do the thinking. TOIDO just hands you the structure — and the question.

Screenshots

Jカレンダー4 screens
TOIDO4 screens

Verdict

The call

The clearest difference is in-app purchases: TOIDO at none against Jカレンダー's 1. TOIDO also leads on ads (none vs shown) and device support (3 vs 1). On price, update cadence 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. TOIDO asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 16, 2026 and October 17, 2026 respectively.

Scorecard3 real differences · 7 level
Jカレンダー versus TOIDO: the parameters behind the verdict, then further details
ParameterJカレンダーTOIDO
PriceFreeFree
Rating4.9 (27 ratings) — better—
Positive reviews65.5% of reviews—
Number of ratings27 — better—
Update frequencyMonthlyMonthly
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone, iPad, Mac — better
Requires iOS16.6 — better17.0
Further details — not scored
Size22 MB2 MB
Age rating4+4+
DeveloperPiyoLog Inc.Daisaku Harasaki

In-app purchases

1 purchases

Jカレンダー

One-time1
  • 広告非表示$2.99
None

TOIDO

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 TOIDO free?
TOIDO is free to download, with no in-app purchases.
Do Jカレンダー or TOIDO have ads?
Jカレンダー shows ads; TOIDO does not.
Which is updated more often, Jカレンダー or TOIDO?
Jカレンダー ships an update monthly, and TOIDO monthly. Most recently, Jカレンダー was updated on October 16, 2026 and TOIDO on October 17, 2026.

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