Virtual PAPI vs Digital Protractor & Level

Pilots love runways with visual descent guidance, such as PAPI or VASI, but unfortunately they don't exist everywhere. This app provides an adjustable visual descent guidance for every runway on the planet. The pilot can select an airport, a runway, adjust the desired descent angle and the aiming point, then Virtual PAPI will create a glide slope indicator style. The glide slope will provide accurate vertical guidance to the aiming point from any direction, 360 degrees, providing a valuable guidance for any type of approach, like base entries, short approaches, straight-ins, etc. The app comes with over 30 thousand runways in its offline database, and more will be added as they are discovered. The app works completely offline and never tries to use the internet. All it needs is access to your location. Virtual PAPI is and free and open source, with all the code available on GitHub.

Built for construction workers, carpenters, installers, DIYers, and anyone who needs a clear angle reading. Digital Protractor & Level gives you four clean, high-contrast measuring tools: Protractor, Level, 4 Corners, and Photo Angle. Large readings and controls stay easy to see, and the layout adjusts when you rotate your phone. FREE PROTRACTOR • Read angles with the realistic protractor • Automatic short-edge and long-edge measuring • Clear portrait and landscape layouts • Keep using the basic protractor without a time limit PRO FEATURES — $3.99 ONE TIME • Traditional bubble level with numerical readings • Large 4 Corners bullseye level for surface tilt • Photo Angle: choose a photo and drag a corner and two endpoints to measure the angle between them • Zero and calibrate on any surface • Hold readings while you move • Set a target angle with haptic guidance • Hear measurements spoken aloud • Use the flashlight in dark spaces PHOTO ANGLE Measure a corner, roofline, or drawing in a photo. Reposition all three points, reset the lines, or rotate your phone while keeping your measurement. Photo Angle measures the angle as it appears in the image; perspective can change the real-world angle, so use a straight-on photo. Photos and measurements are processed on your device and are not uploaded by the app. Only the photo you choose is shared with the app through the system photo picker. Photos stored only in iCloud may need an internet connection to open. The basic protractor is free. Unlock Pro permanently for one $3.99 purchase. Existing Pro owners get Photo Angle at no extra cost. There is no new trial, subscription, recurring charge, advertising, or account. Internet access is needed for purchases and restoring Pro.