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Guide · 5 min read

How accurate is iPhone LiDAR, really?

It is the first question every professional asks, and the right one. Here is what to expect, and how to get the best out of the sensor.

01

The short answer

In a typical room of up to about 6 metres, the gap with a laser meter is usually one to two centimetres. Over a whole flat, small errors can add up, which is why you should check one or two long dimensions and correct them on screen.

02

What affects accuracy

Range: the sensor is best within five metres. Surfaces: mirrors, glass and very dark materials reflect poorly. Movement: fast sweeps capture less. Light: the camera needs some to track position.

03

When to double-check

For contractual documents, sale areas or fabrication, check the critical dimensions with a laser meter. For sketch design, quoting or a listing plan, the scan is generally enough on its own.

Questions

Is LiDAR more accurate than photo-only apps?

Yes. Photo-only apps estimate depth from images; LiDAR measures it directly, which is far more reliable indoors.

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