I've uploaded the (long-overdue) HSM version of my feeds and speeds calculator. It is free and can be downloaded for offline use. Works on most browsers, including your phone! This version adds searchable settings for machines/tools/cuts, though you can continue bookmarking the generated URLs like prior versions. It also adds a few new parameters (shank, axial/radial force limits, etc).
Basically just save the webpage to disk (right click on the link and "save link as..."). I wrote more detailed instructions in my last thread about this calculator (here).
On my iPhone, I use the "reader mode" to save the webpage for offline viewing. You can also add a webpage to the home-screen, so it works just like an iPhone app (sadly this trick is it is not "offline", and the icon is terrible).