Route-based duty planning
Enter sectors with STD, STA, planned flight time, ACT OUT, and ACT IN to review duty and flight-time status.
Flight crew duty reference
Crew Duty Time
A focused iOS calculator for crew duty, rest, flight time, LBO, next-duty planning, Dynamic Island visibility, and Apple Watch time entry.
No subscription
Local calculations
iPhone, iPad, Watch
iOS download
Built for iPhone, iPad, Apple Watch, and visible duty status.
Crew Duty Time is prepared as a paid, no-subscription App Store release. The public App Store download link will be added here as soon as Apple approval makes the listing available.
Why CDT exists
Duty planning without spreadsheet friction.
CDT keeps route timing, report assumptions, rest references, rolling flight time, LBO, cabin references, and next-duty checks in one local-first workflow for short-term crew planning.
RouteSTD / STA / ACT
LimitsDuty / FT / Rest
SurfacesDynamic Island / Watch
Real app workflow
From route setup to next legal report.
Use planned times before duty, then enter actual OUT and IN values as the operation changes. CDT refreshes duty, flight-time, rest, LBO, and next-duty references from the same route timeline.
Dynamic Island and Live Activity
Duty status stays visible when the app is not frontmost.
Supported iPhone models can show compact duty-stage context through Dynamic Island and Live Activity surfaces, including REPORT, STD, DLY, and LBO stages before ACT OUT is entered.
Core features
Made for repeated crew checks, not marketing demos.
Company-style settings
Adjust report time, taxi time, maximum flight time, maximum FDT, LBO, rest, cabin reference values, and related planning limits.
Dynamic Island and Live Activity
Keep current duty-stage context visible on supported iPhone models, including REPORT, STD, DLY, and LBO stages before ACT OUT is entered.
Apple Watch companion
Review the active duty snapshot from the wrist and enter time values without digging through the full iPhone screen.
Rest and LBO reference
Check short-term rest, in-flight rest planning, LBO timing, multi-crew and double-crew planning references.
Rolling flight-time reference
Review rolling 24-hour flight-time values for short-term awareness during a sequence.
Local-first privacy
No account sign-in is required. Core calculations are processed locally on device, with no data collection for the App Store privacy label.
No subscription fee
CDT is positioned as a straightforward paid tool, without ads, recurring subscription pressure, or cloud-account lock-in.
Updates and manuals
Release notes and operating guidance stay with the product.
The guide page carries practical usage instructions and a downloadable PDF manual. The release notes page is reserved for version-by-version details, compatibility notes, and behavior changes that are too detailed for the App Store "What's New" field.
Important boundary
A planning reference, not an official approval system.
CDT helps flight crew calculate and review duty-related values from user-entered data. Final legality must always be verified against company manuals, authority regulations, operational control requirements, and current operating conditions.