This is a very basic snippet I use to animate some sliders and / or kangaroo goal objects. fully open python script. It is lightweight and portable; means you can share the definition with other team members without the need to install any 3rd party tools.
1- copy .ghuser file to: AppData\Roaming\Grasshopper\UserObjects
2- unblock if necessary
3- The tool will be located under: Params / input / GH Counter