Hey everyone,
I tried the reactor planner app, and a lot of it's algorithms seemed wrong(my markII-6 modeled as a markII-1), so I decided to make my own. It's javascript based, so no download, though I recommend a browser with a good javascript engine(mostly any latest version browser). It has Uranium cells, cooling cells, plates, and IHDs. Very simplistic UI, can only do a single tick or complete the cycle, and need to refresh to reset. I am planning on adding reactor stats and better controls, as well as server based saving/loading, so stay tuned.
The good news about it is that the modelling seems rather faithful to the ingame reactors, as my markII-6 models just right, with no overheating c-cells.
Feedback is appreciated.