What is Reddit's opinion of Prime Ruler - length measurement by camera, screen?

From 3.5 billion Reddit comments

Here's an idea

Combination of the two 1. ruler app https://play.google.com/store/apps/details?id=com.grymala.photoruler

2.camera

Most people use a photo gallery. If an app makes us put the measurements as well it will make tracking even more accurate

it’s called Ruler for those wondering

Ruler if you're on Android.

It's actually called Ruler.

It's called Ruler. It's not super accurate but it definitely can be useful in certain applications.

I think it might be this https://play.google.com/store/apps/details?id=com.grymala.photoruler&hl=en_US

I use this app https://play.google.com/store/apps/details?id=com.grymala.photoruler&hl=en