Microsoft first showed off a prototype of this app at its Build conference in March previous year.
According to The Verge, the app operates using neural networks - a computer system modeled on the human brain and nervous system.
Seeing AI, which Microsoft describes as a research project, is now only available on the App Store for iPhone users.
People - Saves people's faces so you can recognize them, and get an estimate of their age, gender, and emotions.
The app is also able to provide instructions to users if the document, sign or object they want described isn't in-frame. For example, if you point the camera at a document, it will help you align the camera by telling you any parts of it that aren't in view.
Microsoft is yet to confirm when this app is going to be released in other countries. Users will just have to import the image to the Seeing AI app in order for it to work.
The app can also describe strangers around you.
There's the expected and useful currency reader and barcode scanner, but the environment and people recognition abilities offer a new, potentially game-changing experience.
In other words, this is the same type of technology being used to power innovations like self-driving cars. Most recently it added support for Apple's MacBook Pro Touch Bar in Office apps. This means they can be accessed more quickly and in situations where there's no stable internet connection. Advanced features like describing an entire scene or recognizing hand-written documents still require a connection to the cloud to function though.
Today Microsoft introduced a new app exclusively for iPhone, Seeing AI.
Arthur C Clarke once said that any sufficiently advanced technology was indistinguishable from magic, and Microsoft's Seeing AI app gets pretty close to qualifying.