NatML
High performance, cross-platform machine learning for Unity Engine
... exposes machine learning models with simple classes that return familiar data types. These are called "Predictors", and they handle all of the heavy lifting for you. No need to write pre-processing scripts or shaders, wrangle tensors, or anything of that sort. NatML supports Android, iOS, macOS, and Windows alike. As a result, you can build your app once, test it in the Editor, and deploy it to the device all in one seamless workflow.