User cannot change the calendar view in Microsoft Teams from starting on Sunday to starting on Monday.

Microsoft Teams lacks a simple setting to change the first day of the week in the calendar view, forcing users to adapt to an unwanted default.

Severity

2Mild

Willingness to Pay

none

Added

May 5, 2026

App Concept

WeekStart Customizer

A lightweight browser extension or app that overrides the default calendar view in Microsoft Teams and other productivity tools, allowing users to set Monday as the first day of the week. It provides a simple toggle or dropdown to select the preferred start day, integrating seamlessly with the existing interface.

Key Features

One-click setting to change first day of week to Monday
Works with multiple calendar apps (Teams, Outlook, Google Calendar)
Persists user preference across sessions
Lightweight and secure, no data collection

Target Users: Individual professionals and office workers who use Microsoft Teams and prefer a Monday-start calendar

Revenue Model: Freemium with $2.99 one-time pro upgrade for advanced features like custom week start per calendar, or donation-based open source

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