GTP API Gravity Calculator2 vs Flite Log Pro

The GTP API Gravity Calculator v2 (Developed 2025) from Gammon Technical Products, Inc. provides users the ability to determine corrected API at 60 Deg F for jet, gasoline, and diesel fuels. The calculator is a digital version of our GTP-3012-1A and GTP-2727EF slide calculators and it also is capable of calculating the total weight of the fuel.

Flite Log is a native flight logging app designed for pilots, clubs, and flight schools — built to work even when flying without cellular service. Ditch the paperwork and streamline your operations with a smart, modern tool built for aviation. Key Features: QR Code Flight Logging Scan, fly, done. Flite Log lets you scan a QR code on your aircraft to instantly log flight time, pulling in Hobbs and Tach automatically from the last flight. Maintenance Tracking Log squawks and keep tabs on aircraft maintenance. Stay compliant and informed with easy access to maintenance records. Pilot Profiles & Flight Summaries Track your total flight hours, view past logs, and get insights into your flying history. Built for Clubs & Schools Easily manage multiple planes and pilots. Admin tools make it simple to onboard new members, assign access, and keep operations running smoothly. Offline Support No signal? No problem. Flite Log stores flight data locally on your device and automatically syncs when you’re back online — ideal for aviation environments with limited connectivity. Whether you’re logging solo flights or managing an entire fleet, Flite Log simplifies flight tracking with power, precision, and polish. This app uses Apple’s standard End User License Agreement (EULA). https://www.apple.com/legal/internet-services/itunes/dev/stdeula/