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.
Overview · Full Intel report in progress
The App DNA
What makes this app unique?
For USPS letter carriers and clerks who utilize rotating Sunday/day-off scheduling systems.
What does it look like?
Key features
Displays scheduled days off using a standardized color and alpha (A-F) coding system common to USPS printed calendars.
Covers the period from October 2024 (USPS 2025 Q1) through January 2026 (USPS 2026 Q1).
Functions without online calendar integration, ads, pop-ups, or data collection to ensure user security.
Provides visual references for holidays and paydays alongside the rotating SDO schedule.
How much does it cost?
Velocity
Who built it?
Preston Fung
5 apps tracked · Productivity
2026 USPS ColorCal Calendar
2023 ColorCal USPS calendar
2024 ColorCal by FourCatsApp
2027 USPS ColorCal NALCUser Sentiment
What do users think recently?
How are ratings & reviews evolving?
Not enough recent reviews to extract reliable themes yet.
Read the full review analysisCompetition
Competitive landscape for 2025 ColorCal
How's the Productivity market?
The rivals identified
The Analyst's Read
Key takeaways for 2025 ColorCal
Where is it heading?
Bottom line
Users report: This is a privacy-focused, offline utility specifically tailored for USPS employees to manage rotating work schedules without third-party data exposure.
Report last updated