# KC-10 Duty Day Calculator

> KC-10 Duty Day Calculator (iPhone/iPad app by John Robbins.)

- Source: https://appshunter.io/ios/app/kc-10-duty-day-calculator/id986194211 (this page in markdown: same URL + `.md`)
- Developer: [John Robbins](https://appshunter.io/developer/831427516)
- Category: Utilities, Travel
- Price: $0.99
- Age rating: 4+
- Requires: iOS 12.0 · 1 MB
- Languages: American English
- Released: 2015-06-20
- Data updated: 2026-08-25
- User reviews in markdown: https://appshunter.io/ios/app/kc-10-duty-day-calculator/id986194211/reviews.md

## What is KC?

A KC-10 Duty Day Calculator for crews passing Uncle Sam's gas around the globe. 

This app will quickly help you calculate all applicable duty day restrictions in both Zulu and Local.  Simply enter the Alert, Show or Takeoff time and Vol-3 restrictions will be instantly calculated for you.  No more complex calculus at the end of your duty day. 

NEW: You can now add your own timeline to the app. Add your personal or squadron timeline to the latest addition. The tab can be tied to other calculator pages or work as a standalone tool for you planning your duty day. 

It also includes a time calculator that allows you to calculate start, duration or end time when given the other two. Including the 781 decimal duration.  

Hope you find it useful. My email is included if you have suggestions for improvements.


## Version history (last 3 of 3)

### 2.0 — 2022-05-08

It was time for an update.

### 1.4 — 2019-04-07

Fixed a few lingering code bugs. 
Thanks for supporting the project.

### 1.3 — 2015-06-20

No release notes.

## More apps by John Robbins

- [C-17 Duty Day Calc](https://appshunter.io/ios/app/c-17-duty-day-calc/id831427512)
- [Post Msn Calc](https://appshunter.io/ios/app/post-msn-calc/id967104806)
- [KC-135 Duty Day Calc](https://appshunter.io/ios/app/kc-135-duty-day-calc/id986551768)
- [C-130 Duty Day Calc](https://appshunter.io/ios/app/c-130-duty-day-calc/id994789492)
- [C-5 Duty Day Calc](https://appshunter.io/ios/app/c-5-duty-day-calc/id998041462)

All apps by John Robbins: https://appshunter.io/developer/831427516

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*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 2026-08-25.*