Days of a week vs Calendar+
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Days of a week
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This app shows you what happened this month and year. (1) Data from 1900 to January 13, 2026 was collected from WikiPedia. (2) "Calendar": Select a year and month using the pickers on the calendar screen to display a calendar for the specified year and month, and view the days of the week and holidays for that month and year. (3) "Events, Births, and Deaths": Click the tabs at the bottom of the screen to switch between "Events," "Celebrity Births," and "Celebrity Deaths." (4) This app can be used offline. Use it to kill time or find out a friend's birthday.
Calendar+
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年・月・日単位で表示ができるカレンダーアプリ。 会社休日を設定可能。 和暦・六曜の表示あり。 背景＆文字色、文字サイズ、フォント種類などカスタマイズ可能。
Screenshots
Verdict
The clearest difference is update cadence: Calendar+ at monthly against Days of a week's every 5 months. Days of a week's advantage is device support (3 vs 1) and iOS requirement (11.0 vs 17.4). On price, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Days of a week ships an update every 5 months, Calendar+ monthly. The most recent releases landed on September 13, 2026 and May 17, 2026 respectively.
| Parameter | Days of a week | Calendar+ |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 11.0 — better | 17.4 |
| Further details — not scored | ||
| Size | 15 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | studio-kazu | Katsuhiro Mishima |
In-app purchases
Days of a week
No in-app purchases
Calendar+
No in-app purchases
Questions
Is Days of a week free?
Is Calendar+ free?
Do Days of a week or Calendar+ have ads?
Which is updated more often, Days of a week or Calendar+?
Other comparisons
