Measure was never good enough for applications like detailed carpentry work—we found that short measurements were accurate to within half an inch, and longer measurements could be off by several inches—but the best measuring tape is the one you have with you.
Plus, the app worked great if you wanted to measure something large, like a telephone pole, which would be pretty difficult with a tape measure.
ARCore handles augmented reality tracking, detection, and measurement, and the Measure app simply presented all that information in a friendly user interface.
There are many alternative ARCore measurement apps on the Play Store, and since they all use the same toolkit, their tracking and accuracy should all be pretty similar—you're mostly just picking the UI you like.
Even before Google pulled the app, Measure wasn't a great option compared to third-party alternatives.Google still uses ARCore in products like Google Maps, Google Search, and Google Lens.