# US 2021 Pro — US Calendar 2021 Pro

> US Calendar 2021 Pro (iPhone/iPad app by Lui Chih Kuang.)

- Source: https://appshunter.io/ios/app/us-2021-pro/id1091040017 (this page in markdown: same URL + `.md`)
- Developer: [Lui Chih Kuang](https://appshunter.io/developer/796085149)
- Category: Utilities
- Price: $0.99
- Age rating: 4+
- Requires: iOS 13.6 · 3 MB
- Languages: American English
- Released: 2016-03-13
- Data updated: 2026-05-19
- User reviews in markdown: https://appshunter.io/ios/app/us-2021-pro/id1091040017/reviews.md

## What is US 2021 Pro?

A comprehensive calendar app to view United States of America's holidays in a glance. Holidays are grouped into three categories; Federal holidays, state holidays and days of significance (e.g. Groundhog Day, St. Patrick's Day etc.)

You can also add and manage your appointments which will also be reflected in the home page, together with the federal holidays, state holidays and days of significance color codings. 

This is the Pro version, so you can add an unlimited amount of appointment entries as well as have the flexibility to edit the appointment date. The Pro version is also ad free.


## Version history (last 5 releases)

### 2.0.0 — 2021-02-15

Calendar updated for the year 2021.
All new layout for pleasant viewing and easy browsing!
Comes in Light Mode and Dark Mode.

### 1.0.4 — 2020-01-01

Calendar updated  for the year 2020.

### 1.0.3 — 2019-01-01

Calendar updated for the year 2019.
Added Northern Mariana Islands.

### 1.0.2 — 2018-05-22

Calendar updated for the year 2018.
Seamless transition from the year 2017 or earlier.

### 1.0.1 — 2017-03-24

Calendar updated for the year 2017. 
Expanded state selection to include American Samoa and Baton Rouge, Louisiana.

## Apps similar to US 2021 Pro

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Ultrasonic Cleaner](https://appshunter.io/ios/app/ultrasonic-cleaner/id1663848526) | 4.7 (490) | Free | Utilities |
| [IPC360 Home](https://appshunter.io/ios/app/ipc360-home/id1502673947) | 4.5 (2,317) | Free | Utilities |
| [Haseba Calculator](https://appshunter.io/ios/app/haseba-calculator/id1121281655) | 4.6 (3,795) | Free | Utilities |
| [PrivacyHawk](https://appshunter.io/ios/app/privacyhawk/id1592733501) | 4.6 (8,238) | Free | Utilities |
| [Flirty Emoji Adult Stickers](https://appshunter.io/ios/app/flirty-emoji-adult-stickers/id1150847057) | 4.2 (10,578) | Free | Utilities |
| [CaptionCall](https://appshunter.io/ios/app/captioncall/id1529823668) | 4.8 (3,189) | Free | Utilities |

## More apps by Lui Chih Kuang

- [My 2021 Lite](https://appshunter.io/ios/app/my-2021-lite/id796085146)
- [My 2021 Pro](https://appshunter.io/ios/app/my-2021-pro/id1073668848)
- [Catholic 2021 Lite](https://appshunter.io/ios/app/catholic-2021-lite/id1077397490)
- [Catholic 2021 Pro](https://appshunter.io/ios/app/catholic-2021-pro/id1078010446)
- [US 2021 Lite](https://appshunter.io/ios/app/us-2021-lite/id1088684510)

All apps by Lui Chih Kuang: https://appshunter.io/developer/796085149

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-19.*