7LidarAtlas

7LidarAtlas is a portable reference guide for anyone who works with or studies the science of measuring the Earth. Whether you're a surveying student trying to understand how GPS coordinates translate into real positions on the ground, or an experienced engineer needing a quick refresher on datum transformations, this app puts the essential knowledge right in your pocket.

The app covers the full breadth of geodetic topics — from the basics of coordinate systems and map projections to the principles behind satellite positioning and laser scanning. Each topic is written in clear, approachable language with diagrams and worked examples, so you can build genuine understanding rather than just memorise formulas. An interactive map lets you see how different parts of the world use different reference systems, making abstract concepts tangible.

Beyond reading, 7LidarAtlas includes handy calculators for everyday surveying maths — distances between points, slope conversions, coordinate format changes, and more. These aren't meant to replace professional tools, but they're perfect for quick estimates, classroom exercises, or double-checking your work in the field.

Everything works offline, so the app is just as useful on a remote job site as it is in a lecture hall. There are no accounts to create, no data collected, and no subscriptions. Just open it and start learning.