
Week Number Calendar
calendar with week numbers
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About
Week Number Calendar - ISO 8601 Standard
A simple, clean calendar built around ISO 8601 week numbers. Perfect for business planning, project management, and international coordination.
FREE:
- The number of the current week, always visible
- The calendar for the current year
- Current week and current day highlighted
- Available in English, Russian, German, Swedish, Danish and Norwegian
PREMIUM SUBSCRIPTION:
- Every ISO 8601 week number, across the whole year
- Calendars for every year, past and future
ABOUT ISO 8601 WEEK NUMBERS:
Week numbers follow the international ISO 8601 standard, widely used in business worldwide. The first week of the year is the week containing the first Thursday, or equivalently, the week containing January 4th.
This standard ensures consistent week numbering across countries and organizations, making it ideal for:
- Business scheduling and planning
- Project timelines and milestones
- International team coordination
- Manufacturing and logistics
- Any work requiring precise week references
SUBSCRIPTION DETAILS:
Week Number Calendar Premium costs $0.99 per month and starts with a 7-day free trial. Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless it is cancelled at least 24 hours before the end of the current period. You can manage or cancel it at any time in your Apple Account settings.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://github.com/4id-me/week-calendar-support/blob/main/PRIVACY.md
Note: Due to the ISO 8601 standard, years can have 52 or 53 weeks, and dates near year boundaries may belong to the previous or next year's week count.
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What's New in Week Number Calendar
1.2
November 3, 2026
Week Number Calendar now speaks German, Swedish, Danish and Norwegian. The app follows your iPhone language, or you can pick one in Settings. Also fixed: in calendars that start on Sunday, the first days of January now show in week 1, and every row carries the ISO week number of its Monday.
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Subscriptions & In-App Purchases
Premium
Unlock week numbers and view calendars for all years
$0.991 Month
7 Days trial
