--- title: "C-17 Duty Day Calc — App Overview" url: https://marlvel.ai/apps/com-robbinsware-c17ddc category: Utilities developer: John Robbins platforms: ios rating: 4.2 (12 ratings) pricing: paid report_level: overview generated: 2026-04-24 last_verified: "2026-04-24T06:53:15.189Z" --- > **Key Insight:** This app serves as a specialized planning utility to simplify regulatory compliance and time management for C-17 flight operations. | Metric | Value | |--------|-------| | Category | Utilities | | Rating | 4.2 ★ (12) | | Pricing | paid | | Platforms | iOS | | Latest Version (iOS) | 4.25 | | Developer | John Robbins | ## What is C-17 Duty Day Calc? C-17 Duty Day Calc is a utility tool designed to automate complex duty day restriction calculations for C-17 aircrews. It streamlines flight planning by processing Zulu and Local time inputs against Vol-3 restrictions and includes a dedicated time duration calculator. ## Key Features - **Vol-3 Restriction Calculator**: Instantly calculates duty day restrictions based on Alert, Show, or Takeoff time inputs. - **Custom Timeline Builder**: Allows users to create and integrate personal or squadron-specific timelines into their duty day planning. - **Time Duration Calculator**: Computes start, duration, or end times, including support for 781 decimal duration formats. - **Multi-Zone Support**: Provides duty day restriction calculations in both Zulu and Local time zones. ## Who is it for? C-17 aircrew members requiring rapid duty day and flight time calculations. ## Links - [App Store](https://apps.apple.com/us/app/c-17-duty-day-calc/id831427512?uo=2) - [Full Intelligence Report](https://marlvel.ai/apps/com-robbinsware-c17ddc) --- *This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/apps/com-robbinsware-c17ddc).* *Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*