--- title: "2023 ColorCal USPS calendar — App Overview" url: https://marlvel.ai/apps/2023-colorcal-usps-calendar category: Productivity developer: Preston Fung platforms: ios rating: 2.3 (3 ratings) pricing: free report_level: overview generated: 2026-05-09 last_verified: "2026-05-09T04:09:02.309Z" --- > **Key Insight:** This is a privacy-focused, offline-only utility for USPS employees to manage specific rotating work schedules without ads or in-app purchases. | Metric | Value | |--------|-------| | Category | Productivity | | Rating | 2.3 ★ (3) | | Pricing | free | | Platforms | iOS | | Latest Version (iOS) | 1.02 | | Developer | Preston Fung | ## What is 2023 ColorCal USPS calendar? ColorCal 2023 is a productivity tool designed for USPS Letter Carriers and Clerks to track rotating Scheduled Day Off (SDO) cycles. It provides a color and alpha-coded calendar spanning October 2022 through January 2024, including federal holidays and paydays. ## Key Features - **SDO Tracking**: Displays color and alpha-coded (A-F) schedules for USPS Sunday and rotating days off. - **ScratchPad**: Provides a dedicated space for users to input personal notes within the calendar interface. - **Offline Functionality**: Operates entirely without internet connectivity and does not collect or store personal user data. - **Holiday Integration**: Includes federal holidays, such as Juneteenth, alongside standard payday markers. ## Who is it for? USPS Letter Carriers and Clerks requiring a visual reference for rotating work schedules. ## Links - [App Store](https://apps.apple.com/us/app/2023-colorcal-usps-calendar/id1642858325?uo=4) - [Full Intelligence Report](https://marlvel.ai/apps/2023-colorcal-usps-calendar) --- *This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/apps/2023-colorcal-usps-calendar).* *Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*