--- title: "2025 ColorCal — App Overview" url: https://marlvel.ai/apps/2025-colorcal category: Productivity developer: Preston Fung platforms: ios rating: 5.0 (1 ratings) pricing: paid report_level: overview generated: 2026-05-09 last_verified: "2026-05-09T04:09:05.949Z" --- > **Key Insight:** This is a privacy-focused, offline utility specifically tailored for USPS employees to manage rotating work schedules without third-party data exposure. | Metric | Value | |--------|-------| | Category | Productivity | | Rating | 5.0 ★ (1) | | Pricing | paid | | Platforms | iOS | | Latest Version (iOS) | 1.0 | | Developer | Preston Fung | ## What is 2025 ColorCal? 2025 ColorCal is a specialized productivity tool designed for USPS letter carriers and clerks to track rotating Scheduled Day Off (SDO) cycles. It provides a color-coded and alpha-indexed calendar spanning October 2024 through January 2026, prioritizing user privacy by operating entirely offline without data collection or external integrations. ## Key Features - **Color/Alpha SDO Tracking**: Displays scheduled days off using a standardized color and alpha (A-F) coding system common to USPS printed calendars. - **Extended Date Range**: Covers the period from October 2024 (USPS 2025 Q1) through January 2026 (USPS 2026 Q1). - **Privacy-First Design**: Functions without online calendar integration, ads, pop-ups, or data collection to ensure user security. - **Schedule Indicators**: Provides visual references for holidays and paydays alongside the rotating SDO schedule. ## Who is it for? USPS letter carriers and clerks who utilize rotating Sunday/day-off scheduling systems. ## Links - [App Store](https://apps.apple.com/us/app/2025-colorcal/id6670420847?uo=4) - [Full Intelligence Report](https://marlvel.ai/apps/2025-colorcal) --- *This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/apps/2025-colorcal).* *Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*