Google Lens, the tool to have your camera look at objects and detect what they are, is now available on iOS devices. Bing's search app had many of these features for iOS but now Google does as well.
Just download the latest version of the Google Search app for iOS and click on the Google Lens icon, the square colorful icon in the search bar, and use your iPhone's camera to look at objects.
Here is a GIF of it in action:
I still find these visual search features to be science fiction, I am not sure why.
Forum discussion at Twitter.