# Duty Time - FTL Calculator — FTL Calculator - Duty Time > EASA FTL calculator for flight duty, rest, and cumulative limits. (iPhone/iPad app by Machkit LTD.) - Source: https://appshunter.io/ios/app/duty-time-ftl-calculator/id6762084323 (this page in markdown: same URL + `.md`) - Developer: [Machkit LTD](https://appshunter.io/developer/1180576418) - Category: Utilities, Reference - Price: $4.99 - Rating: 5.00/5 from 2 App Store ratings - Age rating: 4+ - Requires: iOS 18.1 · 1 MB - Languages: American English - Released: 2026-04-13 - Data updated: 2026-08-23 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/duty-time-ftl-calculator/id6762084323/reviews.md ## What is Duty Time? DUTY TIME - THE PROFESSIONAL EASA FTL CALCULATOR Duty Time is the most complete EASA ORO.FTL calculator available for iOS. Whether you are planning a long-haul augmented operation or checking your 28-day block hours before signing a roster, Duty Time gives you instant, accurate answers - offline, with no account required. FDP CALCULATOR Know your maximum Flight Duty Period before every flight. - Single, Augmented (3-pilot), and Double (4-pilot) crew - Automatic WOCL detection for start and end encroachment - All 7 extension rules applied correctly, including sector limits with WOCL encroachment and night-start cap (FDP capped at 11:45h when starting 22:00-04:59) - Rest facility class for augmented and double crew (Class 1, 2, 3) - Latest Chocks-On time displayed so you know exactly when the aircraft must be at the gate - Results update live as you adjust inputs REST PERIOD CALCULATOR Never second-guess your minimum rest again. - Home base and away from base calculations - Time zone difference penalty (+1h per hour of difference, 4h or more) - Returning to home base chart: 4 TZ = 24h, 5-8 TZ = 36h, 9+ TZ = 48h - Augmented and Double crew sector penalty (+6h for more than 2 sectors) - FDP extension penalty: pre+post +2h each, or post-flight only +4h - Next possible report time shown clearly with date and day label CUMULATIVE LIMITS TRACKER Stay ahead of your limits before your roster catches up with you. - Block hours: 100h in any 28 days, 900h in a calendar year - Duty hours: 60h in any 7 days, 190h in any 28 days - FDP extension counter: maximum 2 in any 7 consecutive days - Color-coded progress bars: green, caution, near limit, exceeded - Log duty entries with block time, duty time, and extension usage SPLIT DUTY AND STANDBY Two tools in one screen. - Split Duty: validates combined FDP (max 10h), break duration (3-10h required), and shows remaining buffer - Airport Standby: calculates FDP reduction for standby time exceeding 6 hours - Live hints update as you type WHY DUTY TIME - 100% offline, works in the cockpit without any internet connection - No account, no login, no personal data collected - Covers all three crew configurations: Single, Augmented, and Double - Dark mode and light mode, follows your iPhone system setting - Built and verified against EASA ORO.FTL regulation text - Clean, fast, and designed for real operational use REGULATIONS COVERED - ORO.FTL.205 - Flight Duty Period limitations - ORO.FTL.210 - Rest period requirements - ORO.FTL.215 - Standby - ORO.FTL.235 - Cumulative flight time and duty period limitations Regulation reference: Commission Regulation (EU) No 83/2014 DISCLAIMER This app is a calculation aid and reference tool. It does not replace your airline's Operations Manual or official crew control systems. Pilots remain solely responsible for ensuring compliance with applicable regulations and company procedures. Always verify with your crew control department when in doubt. SUPPORT Questions or feedback: support@yallawin.net (c) 2025 Machkit LTD. All rights reserved. ## Key features - Flight Duty Period (FDP) calculation - Rest period calculation - Cumulative limits tracking - Split duty and standby tools - Offline functionality - EASA ORO.FTL regulation compliance - Dark and light mode support ## Chart rankings - #190 in Top Paid · Utilities (US App Store) ## Frequently asked questions about Duty Time ### What is Duty Time? Duty Time is a professional EASA FTL calculator designed for aviation professionals. It helps calculate flight duty periods, rest periods, and cumulative limits according to EASA regulations. ### Does Duty Time require an internet connection? No, Duty Time is 100% offline and works without any internet connection, making it ideal for use in the cockpit. ### What crew configurations does Duty Time support? Duty Time covers all three EASA crew configurations: Single, Augmented (3-pilot), and Double (4-pilot) crew. ### How does Duty Time handle rest period calculations? Duty Time provides calculations for both home base and away from base rest periods, including time zone difference penalties and returning to home base charts. ### Can Duty Time track cumulative flight and duty hours? Yes, Duty Time features a cumulative limits tracker for block hours, duty hours, and FDP extension usage, with color-coded progress bars to indicate proximity to limits. ### Is Duty Time compliant with EASA regulations? Yes, Duty Time is built and verified against the EASA ORO.FTL regulation text, specifically covering limitations for flight duty periods, rest periods, standby, and cumulative limits. ### What is the price of Duty Time? Duty Time is a paid application priced at $4.99. ### Does Duty Time have ads? No, Duty Time does not contain advertisements. It is a paid application designed for professional use without interruptions. ## Version history (last 5 releases) ### 1.2.2 — 2026-07-25 New: Duty Period Calculator enter your reporting and estimated chocks-on time to instantly see your total duty period (including 30 min post-flight) and duty end time, making rest planning easier. New: Planned mode for Cumulative Limits check your published roster against limits before you fly. The app scans every rolling window to find your worst-case 7-day and 28-day totals. New: Exceedance detail tap any limit to see exactly which flights contributed and by how much you're over. Fixed: Cumulative Limits now correctly exclude future-dated flights in Actual mode. Improved: Various UI refinements and stability fixes. ### 1.2.1 — 2026-07-21 Fixed: Cumulative Limits data (block hours, duty hours, FDP extensions) now saved permanently and restored after closing the app. ### 1.2 — 2026-05-26 WOCL (Window of Circadian Low) now correctly uses body clock time based on acclimatization. When departing from an outstation after less than 48 hours, the app now applies the home base timezone for WOCL calculation as required by EASA ORO.FTL regulations. ### 1.1 — 2026-04-17 Bug fixes on Augmented Rest ### 1.0 — 2026-04-13 No release notes. ## More apps by Machkit LTD - [FDP Calculator](https://appshunter.io/ios/app/fdp-calculator/id6738784799) - [Yallawin](https://appshunter.io/ios/app/yallawin/id6756559444) All apps by Machkit LTD: https://appshunter.io/developer/1180576418 ## Related topics [duty time](https://appshunter.io/ios/topics/duty-time) --- *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 2026-08-23.*