AR Finder is an application to use AR to view angles, capture information such as camera height, etc. for capturing images.
For more information
https://rklab.net/ar-finder-three-aims/
please look at.

Notes
○ 3GB or more of memory is recommended because AR uses very much memory
○ Movie recording function is limited to iPhone 8 and later.
※Movie recording may not be possible due to circumstances such as many objects.

Please use the screen recording function with iPhone 6s, iPhone 7, iPhone 7 Plus and iPhone SE.
Frames may be dropped depending on the model's performance.
Although there is a trade-off with the complexity of the object, it can be used normally with the iPhone 8 Plus, but I think that the number of polygons near the limit of usdz will drop frames.

As a model, iPhone 8 or higher is strongly recommended.

For the purpose of capturing and using 3DCG objects yourself, what comes with the app is as easy as three people or cubes.