# Week Numbers - Calendar Weeks — iCloud and Exchange sync

> Adds ISO 8601 or US-style week numbers to your iPhone/iPad calendar. (iPhone/iPad app by Emoji Apps GmbH.)

- Source: https://appshunter.io/ios/app/week-numbers-calendar-weeks/id402559382 (this page in markdown: same URL + `.md`)
- Developer: [Emoji Apps GmbH](https://appshunter.io/developer/336547449)
- Category: Productivity, Reference
- Price: Free
- Age rating: 4+
- Requires: iOS 16.4 · 3 MB
- Languages: American English, German (Germany)
- Released: 2010-11-16
- Data updated: 2026-08-19
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/week-numbers-calendar-weeks/id402559382/reviews.md

## What is Week Numbers?

This App adds calendar week numbers (week 1, week 2, ...) to the standard iPhone or iPad calendar 

You can choose the calendar, where the calendar week numbers should be displayed. There is no need for a second calender App anymore for this task. 

You can choose the days of the week, where the week numbers should be displayed. For example only the first day of the week, or all days of the week. 

You can choose between two different week number schemas:
• Weeks starts on Monday: This is the standardized version (DIN 1355 / ISO 8601) and is used for example in Europe.
• Weeks starts on Sunday: This is used in the USA, Canada, Australia and New Zealand.


If you sync your iPhone calendar with iCloud, MS Exchange or with your Mac or PC, the calendar week numbers will also be synced. 

Enjoy this great and helpful App

## Key features

- Add week numbers to calendar
- Choose calendar for display
- Select week start day (Mon/Sun)
- Support for ISO 8601 and US schemas
- iCloud and Exchange sync

## Recent user reviews (10 of 27)

All indexed reviews: https://appshunter.io/ios/app/week-numbers-calendar-weeks/id402559382/reviews.md

### 1/5 — Funktioniert nicht

*2016-08-23*

Hab die App für 99 Cent gekauft. Leider funktioniert die Einfügung der KWs nicht.

### 3/5 — App anzeige

*2014-06-09*

Die aktuelle Kalenderwoche Anzeige in der App wäre von Vorteil so wie in Abbildungen. Dann gibt's auch mehr punkte.

### 4/5 — Wochennummern

*2014-04-14*

Perfekte Ansicht der Wochennummern. In der jahresübersicht wäre es jedoch auch noch gut. Vielleicht gibt es bald ein update?

### 5/5 — macht was es soll

*2013-09-26*

ich find's gut, auch wenn das Icon ein neues Design bekommen sollte

### 2/5 — Erfüllt nicht perfekt die Erwartungen

*2013-09-14*

Es ist Schade, dass die Wochenummern nur als Ereignis angezeigt werden und deren Status nicht eingestellt werden kann.

### 5/5 — Calender Week numbers

*2013-06-21*

Wirklich hilfreiche App. Praktisch in der Wochenansicht im Landscape Modus. Hier ist der Montagseintrag völlig ausreichend.

### 1/5 — Doesn't work

*2013-01-21*

Downloaded and doesn't work  .

### 5/5 — Klasse!

*2012-12-04*

Genau so eine App. hab ich immer gesucht! Ab iOS6 sieht man im Infocenter das aktuelle Tagesdatum. Leider nur wenn man mind. einen Eintrag hat. Und genau das macht diese App.! Man kann jeden Tag sich die KW. anzeigen lassen und schon hat man Zugang zum Tagesdatum! Und die KW. lässt sich auch wieder entfernen. Super App.! Kaufen!

### 1/5 — Schlecht zu bedienen

*2012-10-23*

Nicht zu gebrauchen. Statt einer KW Anzeige wird einfach ein Ereignisfeld gesetzt. Außerdem gibt es Löschprobleme. Trotz der FAQ Hilfestellung lassen sich die KWs nicht ohne Probleme entfernen.

### 1/5 — App. Ist nutzlos,man muss man erst auf den Tag immer,zeigt es nicht gleich im Kalender an

*2012-09-29*

Nutzlos

## Frequently asked questions about Week Numbers

### How does Week Numbers display week numbers?

Week Numbers adds calendar week numbers directly to your standard iPhone or iPad calendar. You can choose which calendar to display them in, eliminating the need for a separate calendar app.

### Can I customize how week numbers are shown in Week Numbers?

Yes, you can customize the display by choosing the days of the week where week numbers appear, such as only the first day or all days. You can also select between two schemas: weeks starting on Monday (ISO 8601) or weeks starting on Sunday (US standard).

### Does Week Numbers sync with other calendars?

Yes, if you sync your iPhone calendar with iCloud, MS Exchange, or your Mac or PC, the calendar week numbers added by this app will also be synced across your devices.

### What devices does Week Numbers support?

Week Numbers is available for iPhone and iPad devices, as indicated by its compatibility with iOS.

### Is Week Numbers free to use?

Yes, Week Numbers is available for free, with no in-app purchases or advertisements, making it a completely free utility.

### How often is Week Numbers updated?

The app was last updated on January 13, 2024, indicating ongoing support and potential for future improvements. Its latest version is 1.6.

### What is the age rating for Week Numbers?

Week Numbers has an age rating of 4+, making it suitable for a wide range of users, including children and adults.

### Does Week Numbers have ads?

No, Week Numbers does not contain advertisements. It is a completely ad-free application, providing a seamless user experience.

## Version history (last 5 releases)

### 1.6 — 2024-01-13

- Added week numbers data for 2024 and the following years
- Some other improvements

### 1.5.1 — 2021-06-16

- Bugfixes

### 1.5 — 2020-10-26

- Optimizations for iOS 14
- Added week numbers for the years 2021, 2022 and 2023.

### 1.4 — 2017-10-09

- Optimizations for iOS 11

### 1.3 — 2014-02-24

- Removed the alert of week number events
- iPad support
- iPhone5/5C/5S support
- iOS 7 support
- Some other improvements

## More apps by Emoji Apps GmbH

- [Secret Smileys for Skype - Hidden Emoticons for Skype Chat - Emoji](https://appshunter.io/ios/app/secret-smileys-for-skype-hidden-emoticons-for-skype-chat-emoji/id356088247)
- [Red Phone](https://appshunter.io/ios/app/red-phone/id356116576)
- [Genmoji: AI Emoji Maker - Mix](https://appshunter.io/ios/app/genmoji-ai-emoji-maker-mix/id357563302)
- [SMS Smileys: Emoji AI Stickers](https://appshunter.io/ios/app/sms-smileys-emoji-ai-stickers/id468522684)
- [Emoji 3 PRO - Color Messages - New Emojis Emojis Sticker for SMS, Facebook, Twitter](https://appshunter.io/ios/app/emoji-3-pro-color-messages-new-emojis-emojis-sticker-for-sms-facebook-twitter/id520376062)

All apps by Emoji Apps GmbH: https://appshunter.io/developer/336547449

## Related topics

[week numbers](https://appshunter.io/ios/topics/week-numbers)

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-19.*