While I have see some very short post on this I would like to get this topic moving again. Google now officially support iOS since 0.9 release.
https://github.com/tensorflow/tensorflow/tree/master/tensorflow/contrib/ios_examples
It would be really great to have support for this.
Go to the TensorFlow page on GitHub: https://github.com/tensorflow/tensorflow
Click on the colored bar just under the number of commits, branches, releases, etc.
You will see that TensorFlow is:
* C++ 48.6%
* Python 40.1%
* Jupyter Notebook 4.1%
* Go 1.7%
* TypeScript 1.7%
* HTML 1.2%
* Other 2.6%
It would be a huge piece of work to get all of that running on the iOS.
To be fair, some of the languages listed there are likely just the documentation (HTML, Jupyter Notebook) and some are only there because Tensorflow provides an API for that language (Go), so not all of that is needed to get Tensorflow working on iOS and in Pythonista. The main issue is probably the C++ code, but since I don't know anything about Tensorflow or C++, I can't really judge how hard it would be to port that to iOS.