Screenshots
Description
A C-17 Duty Day Calculator for crews hauling Uncle Sam's stuff around the Globe. This app will quickly help you calculate all applicable duty day restrictions in both Zulu and Local time zones. Simply enter the Alert, Show or Takeoff time and all Vol-3 restrictions will be instantly calculated for you. No more complex calculus at the end of your duty day. BONUS: 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.
What's New
Fixed glitch with "night mode" causing text to turn white.
Details
- Developer
- John Robbins
- Main Category
- Utilities
- Version
- 4.25
- Version Release
- 2022-04-16
- Initial Release
- 2014-03-11
- Size
- 3 MB
- Age Rating
- 4+
- Price
- USD 0.99
- Languages
- EN
- Bundle ID
- com.robbinsware.C17DDC
- Version Rating
- ★ 4.23 (13)
- First Seen
- 2026-05-28
Metadata updated 2026-06-16
Rank History
Free · Max 90 days · Top 5 categories shown (Y-axis: rank, lower is better)
No rank history data
Free Rankings
No rankings
Paid Rankings
Competitive Benchmark — Utilities Top 10
What it takes to beat this app — comparison with the category's top apps. The orange row is the current app.
| # | App | Price | Rating | Ratings | Langs | Last Update |
|---|---|---|---|---|---|---|
| 1 | Shadowrocket | USD 2.99 | ★ 4.48 | 11,923 | 7 | 2026-06-10 |
| 2 | IONIQ 5 Companion | USD 12.99 | ★ 4.82 | 28 | 7 | 2026-06-03 |
| 3 | Wipr 2 | USD 4.99 | ★ 4.69 | 1,168 | 1 | 2026-06-10 |
| 4 | Goblin Tools | USD 2.99 | ★ 4.78 | 2,932 | 1 | 2023-06-23 |
| 5 | FORScan Lite - for Ford, Mazda | USD 6.99 | ★ 3.02 | 192 | 7 | 2026-05-09 |
| 6 | Noir - Dark Mode for Safari | USD 2.99 | ★ 4.56 | 1,329 | 2 | 2026-06-08 |
| 7 | Stash - Rule Based Proxy | USD 5.99 | ★ 4.35 | 1,167 | 9 | 2026-04-01 |
| 8 | Necrophonic | USD 9.99 | ★ 3.77 | 525 | 1 | 2022-06-19 |
| 9 | Just Press Record | USD 6.99 | ★ 4.25 | 1,517 | 13 | 2026-05-05 |
| 10 | V2Box Pro - V2ray Client | USD 2.99 | ★ 4.21 | 29 | 9 | 2026-06-16 |
| 34 | C-17 Duty Day Calc | USD 0.99 | ★ 4.23 | 13 | 1 | 2022-04-16 |
More by This Developer
User Reviews
Decent app but some of the inputs are unreadable like another review said. Would be really helpful if this would be worked out.
Update: thanks for the quick fix! Wish we could get that hour back. The flying has been pretty great! Also, not sure if I did something to my settings, but the font is all white now and difficult to read. Love the calculator to help with everything we need to know. The only ask is that for bravo, “last beer” calculates wrong. It gives you 11 hours prior instead of 12. Would appreciate if you guys could update that so that it doesn’t get anybody in trouble after being tired and possibly not realizing the calculation is wrong. Otherwise, absolutely a great app!
Awesome app, but the new update screws up the color scheme when using an iPhone with “Dark Mode” selected in phone settings under “Display and Brightness”. Bravo is unreadable and just the input boxes are unreadable for the other pages but they are harder to read (white on light blue for airland). I think most people use dark mode these days so I’m sure I’m not the only one who would appreciate you looking into it. Thanks in advance!
I really like the app a lot. Clean interface and easy to use. One minor suggestion though: can you please make the “take off time local” block editable that way you can calculate everything based on local time?
I really like the app, thanks for the work to make our lives easier on the road. One recommendation, "Time Calculator" - "Duration" needs to have a decimal point input capability. All the best! -Bill
Makes everything super easy for anything flying related! My only suggestion would be a calculator for post mission crew rest. I know it's super easy to calculate, but just thought it would be something to add.
Must need for any pilot. Is it possible to add an iOS 6 version?
Awesome app and it is well worth the money. Much better than others available on the market. I was glad to see the creation of this and patiently waited it's release.
Reviews are collected only for apps with detected changes (new entries or sharp risers).