On my iPad I enjoy using the free Slopes app which allows you to just open the app, click "system", put in a system of ODE without any programming, and you immediately get plots and a slope field. It is very useful to have a thought, write down the ODE immediately and then immediately see the behavior of systems. But I haven't found anything like this for PC. Of course I know there's Maple, Matlab, Mathematica, Excel, the Jupyter/Sympy/SciPy/Matplotlib stack, and something similar for R, but they all require writing at least a few lines of code that need to be looked up just to get something going, really requiring a context switch between having an idea and exploring that idea. Is there anything like it on PC?
