ALPA Part 117 Calc. Guide is an Android application designed to help pilots calculate their rest period, max duty day, and max flight time based on their individual criteria. The app also includes the FAR Part 117 Regulation and ALPA's Part 117 Guide, making it a comprehensive tool for pilots.

The interface of the app is user-friendly and easy to navigate. The calculator is accurate and reliable, providing pilots with the necessary information to make informed decisions about their flight time and duty time. The app is especially useful for pilots who frequently travel across different time zones and need to adjust their schedules accordingly.

Overall, ALPA Part 117 Calc. Guide is a valuable utility tool for pilots that provides accurate flight time and duty time calculations. It is a must-have for pilots who want to ensure they are operating within the legal limits and maintaining their safety and the safety of their passengers.