A free app for Android, by Omega Centauri Software.
Two Point Height is an easy-to-use app that allows you to measure the height of objects in two ways: using the back or front camera, or by selecting two points on the object and then measuring the distance between them. It is also a simple camera clinometer that can use either the back or front camera, which is useful on sunny days as well as for viewing rockets and other small things that are hard to see in the sky.
It is easy to use. First, select the mode you want to use (back, front, or two-point mode). Next, select the two points on the object. You can select them in any order, but it is recommended to select the bottom point first and then the top point. Finally, enter the distance and press the button to measure the height.
It is very easy to use, and it is very accurate.
It is suitable for measuring the height of a wide variety of objects. It is useful for measuring the height of a building, a tree, a vehicle, a river, etc.