# Week Numbers - PRO — ISO / European, US, Custom > Calendar app to display and insert ISO, US, and custom week numbers. (iPhone/iPad app by Devart B.V..) - Source: https://appshunter.io/ios/app/week-numbers-pro/id737703791 (this page in markdown: same URL + `.md`) - Developer: [Devart B.V.](https://appshunter.io/developer/340386788) - Category: Productivity, Business - Price: $0.99 - Rating: 3.00/5 from 2 App Store ratings · 7 written reviews indexed - Age rating: 4+ - Requires: iOS 14.0 · 3 MB - Languages: American English, Dutch, French (France), German (Germany), Italian, European Spanish - Released: 2013-11-11 - Data updated: 2026-08-29 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/week-numbers-pro/id737703791/reviews.md ## What is Week Numbers? • Always the current week number on the icon Badge and Widget. Refreshes automatically. • Easily inserts Week Numbers of year 1 - 10.000 as all-day events into your iPhone and iPad calendar. No need for any subscriptions or internet. Saves you a lot typing. The app contains: - ISO / European. - US. - Middle East. - Simple. - Custom. - Year 1 - 10.000 You can select beforehand if you want the week numbers to appear on one particular weekday or on all days of the week. Once added all week numbers can be easily edited and synced with iCal, Google, Outlook, iCloud, etc. If you added the week numbers twice by mistake or iCloud did not work the way you expected, you can always easily remove them with the unique “Cleaner”. MAIN FEATURES - Very simple, flexible and easy to use. - Insert into a calendar of your choice (home, work, etc). - Fully integrates with the iPhone calendar and syncs with iCal, iCloud, etc. - You can edit the weeknumbers or delete them in one go. - Unique Cleaner that checks all your calendars for entries by THIS app and deletes them all. ## Key features - Icon badge and widget display - Insert week numbers into calendar - Supports ISO, US, and custom formats - Year 1-10,000 support - Calendar sync (iCal, Google, Outlook) - Unique 'Cleaner' tool for entry removal ## Recent user reviews (7 of 7) All indexed reviews: https://appshunter.io/ios/app/week-numbers-pro/id737703791/reviews.md ### 5/5 — Works as advertised *2024-06-21* 99 cents saved me from having to look at Wikipedia. Sorry Jimmy. I’m giving my dollar to these guys. Better luck next W01. This app even has instructions on how to fix issues with the badge not updating as aforementioned. That’s right. This app has it all. Week number, instructions, you name it! ### 1/5 — Still doesn’t work *2024-04-10* Badge just shows 52. App asked for access to my calendar, I rejected, app locked next time I launched it, asking me to grant access in settings, but has no way to return to settings. ### 3/5 — Functional but does not warrant the “Pro” name! *2021-11-20* Frankly it is disappointingly this is the only app I can find to select a custom week number, there are lots of industries that use none standard weeks, mine start on a Saturday from the first week in April or the last week in March …. The icon is an issue, it shows ‘52’ (for weeks of year), but would be better to display that number as the week required rather than a badge as it does currently. Also there is no widget option and no watch complication which you would expect on a “pro” version as a minimum. There is also a bug …. When you edit the custom week and go to “first week starts on” the date and month is a white tog wheel on a white back ground so you can’t see anything, I had to count the clicks to get the date I wanted. Hopefully this bug will be fixed and the missing widget and watch functions updated, then this would be the best out there by far. Other than the points raised it’s basic but functional but currently doesn’t warrant the “pro” name. ### 4/5 — Beautiful *2021-04-18* Would be nice to be able remove the “ISO”, etc. sign or replace “ISO” by “Europe” or something like that. ### 5/5 — Great *2017-02-15* Great, does the work i want to see, now i can add my semester week to the calendar, simple and easy ### 1/5 — Wrong week *2016-03-01* This app shows the wrong week number, it does not follow ISO week standard ### 1/5 — Doesn't change week numbers *2016-02-25* Loaded ISO/europe. It changed the week to start on Monday however the first week of 2016 (week1) shows on last week of December instead of the week starting on Monday January 4th. Waste of $.99 ## Frequently asked questions about Week Numbers ### How does Week Numbers PRO display the current week number? Week Numbers PRO shows the current week number on your device's icon badge and through a dedicated widget. These displays refresh automatically to ensure you always see the most up-to-date information. ### Can Week Numbers PRO add week numbers to my calendar? Yes, Week Numbers PRO can insert week numbers as all-day events into your iPhone and iPad calendar. This feature requires no subscriptions or internet connection and saves you manual typing. ### What types of week number formats does Week Numbers PRO support? The app supports multiple formats including ISO/European, US, Middle Eastern, and custom configurations. You can also specify if you want week numbers to appear on a particular weekday or all days. ### How does Week Numbers PRO handle calendar entries? All inserted week numbers can be easily edited and synced with popular calendar services like iCal, Google Calendar, Outlook, and iCloud. If you accidentally add entries twice or encounter sync issues, the unique 'Cleaner' tool can remove them. ### What is the price of Week Numbers PRO? Week Numbers PRO is available for a one-time purchase of $0.99. There are no subscriptions or in-app purchases required after the initial purchase. ### Does Week Numbers PRO have ads? No, Week Numbers PRO is ad-free. The application does not contain any advertisements, providing an uninterrupted user experience. ### What devices is Week Numbers PRO compatible with? Week Numbers PRO is designed for Apple devices and is compatible with iPhone, iPad, and iPod touch. It requires iOS 4.3 or later. ### How often is Week Numbers PRO updated? The latest version of Week Numbers PRO is 4.20, released on November 24, 2021. While the app was last updated in late 2021, its core functionality remains stable for its intended purpose. ## Version history (last 5 releases) ### 4.20 — 2021-11-24 iOS15 compatible ### 4.02 — 2020-12-09 Dark mode for Widget. ### 4.01 — 2020-12-04 Widget with the current Week number in ISO / European, US, Middle East, Simple, Custom. ### 4.00 — 2020-11-29 Widget with the current Week number in ISO / European, US, Middle East, Simple, Custom. ### 3.40 — 2017-09-20 iOS 11 compatible App name changed from: Week Numbers - ISO / European, US, Middle East, Simple, Custom Pro ## Apps similar to Week Numbers | App | Rating | Price | Category | | --- | --- | --- | --- | | [Week Number #](https://appshunter.io/ios/app/week-number/id1241771220) | 1.0 (1) | $0.99 | Productivity | | [CW 1 to 53](https://appshunter.io/ios/app/cw-1-to-53/id1496439228) | 2.5 (13) | Free | Productivity | | [Watch Weeks](https://appshunter.io/ios/app/watch-weeks/id1480206488) | — | Free | Productivity | | [Week Number Pro](https://appshunter.io/ios/app/week-number-pro/id1462575499) | 3.0 (3) | $0.99 | Productivity | | [Week Numbers - Calendar Weeks](https://appshunter.io/ios/app/week-numbers-calendar-weeks/id402559382) | — | Free | Productivity | | [Calendar Week](https://appshunter.io/ios/app/calendar-week/id1195370546) | 4.2 (5) | Free | Productivity | ## More apps by Devart B.V. - [UK Holidays](https://appshunter.io/ios/app/uk-holidays/id395135018) - [US Holidays - cals with flags](https://appshunter.io/ios/app/us-holidays-cals-with-flags/id395135040) - [Feestdagen Schoolvakanties NL](https://appshunter.io/ios/app/feestdagen-schoolvakanties-nl/id395135067) - [Feiertage und Schulferien DE](https://appshunter.io/ios/app/feiertage-und-schulferien-de/id395135253) - [Australian Holidays](https://appshunter.io/ios/app/australian-holidays/id395135280) - [Canadian Holidays](https://appshunter.io/ios/app/canadian-holidays/id395135320) All apps by Devart B.V.: https://appshunter.io/developer/340386788 ## 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 2026-08-29.*