--- title: "2024 ColorCal by FourCatsApp — App Overview" url: https://marlvel.ai/apps/2024-colorcal-by-fourcatsapp category: Productivity developer: Preston Fung platforms: ios rating: 5.0 (3 ratings) pricing: paid report_level: overview generated: 2026-05-09 last_verified: "2026-05-09T04:09:09.451Z" --- > **Key Insight:** This is a niche, static utility for USPS employees that prioritizes privacy and offline access over dynamic calendar integration. | Metric | Value | |--------|-------| | Category | Productivity | | Rating | 5.0 ★ (3) | | Pricing | paid | | Platforms | iOS | | Latest Version (iOS) | 1.0 | | Developer | Preston Fung | ## What is 2024 ColorCal by FourCatsApp? 2024 ColorCal is a productivity tool designed to display color-coded, rotating scheduled day-off (SDO) calendars for USPS personnel. It provides a static, offline-only view of holidays, paydays, and specific SDO schemes spanning October 2023 through January 2025. ## Key Features - **Color-Coded SDO Calendar**: Displays a pre-set color and alpha (A-F) scheme for rotating scheduled days off. - **Offline Data Display**: Provides a secure, offline-only interface that does not require calendar integration or internet connectivity. - **Financial and Holiday Tracking**: Includes built-in markers for paydays and holidays within the USPS 2024-2025 schedule. - **Privacy-Focused Design**: Operates without ads, in-app purchases, push notifications, or collection of personal user data. ## Who is it for? USPS letter carriers and clerks who follow a specific color/alpha-coded rotating day-off schedule. ## Links - [App Store](https://apps.apple.com/us/app/2024-colorcal-by-fourcatsapp/id6466098499?uo=4) - [Full Intelligence Report](https://marlvel.ai/apps/2024-colorcal-by-fourcatsapp) --- *This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/apps/2024-colorcal-by-fourcatsapp).* *Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*