I've used http://www.python-gui-builder.com/ but its outdated and doesn't have enough features. I've also used https://visualtk.com/ but its inconsistent and doesn't generate my code half the time. Neither have any mathematical components.
Right now I'm using (https://labdeck.com/python/) and its great and has everything I want but it limits how many GUI components I can use at once. Before I upgrade to (https://labdeck.com/python-designer/) for £15, does anyone know any better options and it must be up to £25.