The only way to use debug is:

if __name__ == '__main__':
    app.run(use_reloader=False, debug=True)

@cvp, good job. But, Where can I find the geo function?

@mikael, I’m testing jsui but I have a problem with AttributeWrapper, it is not defined. Are you still developing it? or from where I can download the code. Thanks, very good job.

Thank you @Matteo for your comments. What I did not understand was that their examples run on the sage side and not on the iOS device. Thanks a lot.

@Matteo excuse my ignorance and my English, how do I install the sage package and where do I take the fortran function?
I have an iPhone. Thanks