Calendar Week Nerd

ISO Weeks, Widgets & Watch

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

Have your most beautiful week ever. Calendar Week Nerd is the ultimate week companion that respects both aesthetics and technical needs. Whether you just want minimal, colorful week widgets or need full custom week setup with ISO, fiscal years, and 9-day cycles, CWN adapts to you. Features: Beautiful Widgets: Home screen, lock screen, and interactive widgets in all sizes. Custom Week Setup: Choose your start day, fiscal year, week numbering, even 9-day sprints with custom week lengths. Apple Watch App + Complications: See week numbers and progress right on your wrist. Calendar Navigation: Tap any week and jump directly into your calendar app. Week & Year Arcs: Track where you are in the year at a glance. Calendar Week Nerd The perfect week system you didn't know you needed. Privacy Policy: https://calendarweeknerd.app/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Ratings & Reviews

  • This app hasn’t received enough ratings or reviews to display an overview.

The first half of 2026 is over and widgets are now paid again. If you downloaded the app prior to this release the widgets stay unlocked for you. Thank you for your support.

Version 2026.3

The developer, Balthasar Siekiera, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Usage Data
    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

The developer indicated that this app supports the following accessibility features. Learn More

  • Supported Features

    • VoiceOver

    • Voice Control

    • Larger Text

    • Dark Interface

    • Differentiate Without Color Alone

    • Sufficient Contrast

    • Reduced Motion

Information

Seller
  • Balthasar Siekiera
Size
  • 168.4 MB
Category
  • Utilities
Compatibility
Requires iOS 18.4 or later.
  • iPhone
    Requires iOS 18.4 or later.
  • iPad
    Requires iPadOS 18.4 or later.
  • Mac
    Requires macOS 15.4 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 2.4 or later.
  • Apple Watch
    Requires watchOS 11.4 or later.
Languages
English and 2 more
  • English, German, Swedish
Age Rating
4+
In-App Purchases
Yes
  • CalendarWeekNerd+ Lifetime $29.99
  • CalendarWeekNerd+ Monthly $1.99
  • CalendarWeekNerd Plus Yearly $9.99
  • Learn More
Copyright
  • © Balthasar Siekiera
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Some in-app purchases and subscriptions may be shareable with your family group when Family Sharing is enabled. Learn More

    More by Balthasar Siekiera

    You Might Also Like