# weekSlider > Calculates ISO 8601 calendar weeks and their date ranges. (iPhone/iPad app by Ralf Uttenthaler.) - Source: https://appshunter.io/ios/app/weekslider/id364905490 (this page in markdown: same URL + `.md`) - Developer: [Ralf Uttenthaler](https://appshunter.io/developer/284941512) - Category: Business, Productivity - Price: Free - Rating: 3.00/5 from 4 App Store ratings · 5 written reviews indexed - Age rating: 4+ - Requires: iOS 7.1 · 2 MB - Languages: American English, German (Germany) - Released: 2010-04-01 - Data updated: 2026-06-10 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/weekslider/id364905490/reviews.md ## What is weekSlider? Just swipe the slider and weekSlider will calculate in realtime each week of the year and shows you the first and the last day of the week. weekSlider calculates all calendar weeks following the international ISO 8601 Standard, which defines the first day of the week as Monday and the last day as Sunday. FEATURES - Calculates the actual Calendar Week and displays on the Badge Number on the weekSlider icon - Automatically changes week badger number - Calculates all Calendar Weeks of the actual Year - Calculates Calendar Weeks from Year 1971 to 2026 - Displays the first and the last weekday of the calendar week - Displays actual Date ## Key features - Real-time week calculation - ISO 8601 standard compliance - Displays week start and end dates - Badge number updates automatically - Calculates weeks from 1971-2026 - Shows current date ## Recent user reviews (5 of 5) All indexed reviews: https://appshunter.io/ios/app/weekslider/id364905490/reviews.md ### 1/5 — Was 5 Stars before last IOS update *2015-04-16, version 1.2* This was a fantastic app before the last IOS update. After the update the slide date bar is no longer present. What happened? Removed and re-installed the app. Still no slider bar capability. Please fix and will change rating. Until then the app to me is useless !! ### 1/5 — What's the point? *2014-08-14, version 1.2* I needed an app that quickly told me the week of the year. This one comes with a quick reference badge that never changes unless you open the app. What good is that? Could be a good quick reference app, but instead just something that eats up disk space. One star is generous. ### 5/5 — European Business use Weeks … *2012-11-23, version 1.2* European Business use Weeks and not Months ! American Business use Months+Days ! This App offers a very fast conversion, you'll love it, if … you deal on both sides of the Atlantic, you'll find this App to be very helpful for converting from a "Weeks-Calendar" Date to a "Months-Calendar" Date – thus you'll not complain about this App. Those who complain, obviously have no use for this App; hence delete. (US-Imperial Measurements versus "Rest-of-the-World" Metric requires conversion too – OK !) – same problem, which is solved by a multitude of "Converter/Calculator" Apps. btw, Europeans mail to their US-Business-Partners yearly Calendars that have superimposed both calendar-systems; usually the first 6 month on one side, the second 6 month on the other side of a half-letter-sized card. —> It would be neat to have such "Dual Calendar" added within the present App-lay-out. ### 1/5 — Zero Stars..... *2012-03-28, version 1.1* Needs to be able to select any date and then figure the number of weeks from that date. A waste of App space. ### 5/5 — Easy and superfast... *2010-04-06, version 0* works like it should. Great! ## Frequently asked questions about weekSlider ### What is the short name for weekSlider? The short common name for weekSlider is weekSlider. ### How does weekSlider calculate calendar weeks? weekSlider calculates calendar weeks following the international ISO 8601 Standard, defining Monday as the first day and Sunday as the last day of the week. ### What is the age rating for weekSlider? weekSlider has an age rating of 4+. ### On which devices can I use weekSlider? weekSlider is supported on iPhone, iPad, and iPod. ### When was weekSlider last updated? weekSlider was last updated on September 8, 2015. ### What is the user rating for weekSlider? weekSlider has a rating of 3.0 stars from 4 ratings. ### Does weekSlider show the current week number on its icon? Yes, weekSlider calculates the actual Calendar Week and displays it on the badge number on the weekSlider icon, which automatically changes. ### What is the range of years weekSlider can calculate calendar weeks for? weekSlider can calculate calendar weeks for all calendar weeks from the year 1971 to 2026. ## Version history (last 5 releases) ### 1.3.1 — 2015-09-08 This app has been updated by Apple to display the Apple Watch app icon. Fixed: - Badge week number now changing at 0:01 am - iPhone Version can change now years with just a swipe over the year label >left to right = +1 year >right to left = -1 year ### 1.3 — 2015-08-18 Fixed: - hidden Slider Bug New Feature: - automatic display of calendar week in AppIcon Badge - iPhone 6 and 6 Plus Display Support ### 1.2 — 2012-10-04 iPhone 5 Support ### 1.1 — 2011-12-20 - Change to Universal App. to support iPod Touch and iPhones - Added Swipe Gesture to swipe thru years forward and backward on the Calendar Year Label ### 1.0 — 2010-04-01 No release notes. ## Apps similar to weekSlider | App | Rating | Price | Category | | --- | --- | --- | --- | | [Pulsar for Salesforce](https://appshunter.io/ios/app/pulsar-for-salesforce/id530744301) | 1.1 (14) | Free | Business | | [SpraySelect](https://appshunter.io/ios/app/sprayselect/id520882606) | 5.0 (10) | Free | Business | | [Honeywell ICS](https://appshunter.io/ios/app/honeywell-ics/id1301869421) | 5.0 (4) | Free | Business | | [Visual Components Experience](https://appshunter.io/ios/app/visual-components-experience/id1224128351) | — | Free | Business | | [eCAT Paperless](https://appshunter.io/ios/app/ecat-paperless/id1013792956) | 2.5 (2) | Free | Business | | [Fast Lane Auto Wash](https://appshunter.io/ios/app/fast-lane-auto-wash/id1514728530) | 2.8 (41) | Free | Business | ## More apps by Ralf Uttenthaler - [aSubnet](https://appshunter.io/ios/app/asubnet/id284941506) - [fritch](https://appshunter.io/ios/app/fritch/id981079618) All apps by Ralf Uttenthaler: https://appshunter.io/developer/284941512 --- *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 2026-06-10.*