Totally understandable.

I honestly believe you have the makings of a fine product.

It is certainly cheaper than buying a breadboard and a few components - which, incidentally I do have upstairs, but your software is accessible and I can use it whilst the other half watches telly.

If you are still taking suggestions, maybe autosave feature? The app crashed on me a couple of times, not doing anything intensive.

Personally I hope to follow along with some of these "make your own cpu" tutorials, happy in the knowledge ten hertz is all that anyone really needs...

Oh, and maybe a slightly larger RAM IC.

This is me trying to be helpful - I genuinely hope you sell many copies, and at some point go into volume licensing for schools :-)