K4 Tools
Fuel, Rest, Duty & Flt Calcs
About
This app assists flight crews with inflight fuel and time calculations, integrating with flight plans. Features include scanning flight data, calculating duty and rest periods, and managing crew breaks. It also helps verify fuel accuracy and pre-flight weather conditions.
What's New in K4 Tools
1.10
September 25, 2026
- Added an OOOI sheet for simple confirmation of flight times when OOOI calculations are unavailable - Numerous UI improvements in all tabs - Added Information buttons for understanding inputs and calculations, especially for DUTY/REST calculations - Reworked the entire app in preparation for LogTen flight log integration, coming soon
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FAQ
What is K4 Tools?
K4 Tools is a utility application designed for flight crews to quickly and accurately perform inflight fuel and time checks, with calculators integrated into current flight plans.
What devices does K4 Tools support?
K4 Tools is optimized for both iPhone and iPad, including support for portrait and landscape orientations on iPad, even in mounted flight-deck configurations.
How often is K4 Tools updated?
The latest version, 1.8, was released on June 14, 2026. Planned updates include B777 flight plan support and crew rest alarms.
Is K4 Tools suitable for all ages?
K4 Tools has an age rating of 4+, making it suitable for a wide range of users. It provides operational and contractual threshold warnings for flight crews.
Does K4 Tools have ads?
No, K4 Tools does not contain advertisements. It is a free application without any in-app purchases or ads.
What are the key features of K4 Tools?
Key features include the Magic Scanner to auto-fill flight data, a Duty/Rest Calculator for legal flight times, Crew Rest scheduling, Fuel Checks for receipt verification, and pre-flight weather checks.
What is the user rating for K4 Tools?
K4 Tools has a perfect rating of 5.0 stars based on one review, indicating high user satisfaction with its functionality.
Can K4 Tools help with crew scheduling?
Yes, K4 Tools includes a Crew Rest feature to share break schedules and visually track them on a crew break Timeline, helping manage rest periods effectively.
