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2021 Color Calendar USPS Letter Carriers ColorCal 4.21.20200830

4.7 MB / 1+ Downloads / Rating 5.0 - 1 reviews


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2021 Color Calendar USPS Letter Carriers ColorCal, developed and published by FourCatsApp, has released its latest version, 4.21.20200830, on 2023-01-31. This app falls under the Productivity category on the Google Play Store and has achieved over 50 installs. It currently holds an overall rating of 5.0, based on 1 reviews.

2021 Color Calendar USPS Letter Carriers ColorCal APK available on this page is compatible with all Android devices that meet the required specifications (Android 7.0+). It can also be installed on PC and Mac using an Android emulator such as Bluestacks, LDPlayer, and others.

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App Screenshot

App Screenshot

App Details

Package name: com.fourcatsapp.colorcal2021

Updated: 2 years ago

Developer Name: FourCatsApp

Category: Productivity

New features: Show more

App Permissions: Show more

Installation Instructions

This article outlines two straightforward methods for installing 2021 Color Calendar USPS Letter Carriers ColorCal on PC Windows and Mac.

Using BlueStacks

  1. Download the APK/XAPK file from this page.
  2. Install BlueStacks by visiting http://bluestacks.com.
  3. Open the APK/XAPK file by double-clicking it. This action will launch BlueStacks and begin the application's installation. If the APK file does not automatically open with BlueStacks, right-click on it and select 'Open with...', then navigate to BlueStacks. Alternatively, you can drag-and-drop the APK file onto the BlueStacks home screen.
  4. Wait a few seconds for the installation to complete. Once done, the installed app will appear on the BlueStacks home screen. Click its icon to start using the application.

Using LDPlayer

  1. Download and install LDPlayer from https://www.ldplayer.net.
  2. Drag the APK/XAPK file directly into LDPlayer.

If you have any questions, please don't hesitate to contact us.

Previous Versions

2021 Color Calendar USPS Letter Carriers ColorCal 4.21.20200830
2023-01-31 / 4.7 MB / Android 7.0+

About this app

ColorCal 2021


Postal Color and Alpha (A-F) Coded calendar for Postal Letter Carriers and Clerks using USPS Sunday/Rotating Scheduled Day Off (SDO) calendar


This calendar spans October 2020 (USPS 2021 Q1 ) thru January 2022 (USPS 2022 Q1)


Note taking has been integrated into this version and the previous note taking versions have been eliminated


NOTE: The SDO scheme depicted in this calendar, matches commonly available printed calendars.


For security, there is no online calendar integration. It simply displays your scheduled day off, holidays and paydays. NO complicated or intrusive settings.

There is no SPAM, Ads, pop-ups, nag screens, push notifications, in-app purchases or collection of personal data. It does not collect, save or ask for ANY information. The app works without connectivity.


WARNING: ONLY get my app from Google PLAY OR the Amazon APP store. Other sources may provide unsafe and/or altered (hacked) apps whose safety cannot be verified.

Requires Android version 4.2 - 9.0.

New release now supports Android 7.0 - 10.0

The calendar is believed to be correct. By using it you agree to hold me harmless in the event of errors or omissions

New features

Added support for Android 10, removed support for Android 4.4 - 6.0 and minor edits.

App Permissions

Allows applications to access information about networks.
Allows applications to open network sockets.
Allows an application to read from external storage.
Allows an application to write to external storage.