This is, for now, a pretty basic application that does only one thing:
help you perform a manual white blood cells count (aka "CBC”)

Peering into a microscope, you tap large buttons to increment neutrophil, lymphocyte, etc. counts.
When you reach 100, the app warns you and you can choose to continue for a more precise count or use the current numbers.

The app comes with a global ‘Undo’ function to go back as many taps as you wish.

I may add more features to this app, beyond CBC, as requested by my S.O.

I will likely add preferences as well; for instance to change feedback sounds, add vibrations, etc.