iOS16 or later.
This App is a utility to count numbers of something, up to four things; for example, in bird-watching, in researching traffic materials, and so on.
Beside the counter button, annotation/label of the button is available. (If you use Labeling, use on usual English-keyboard, not on Japanese Kana-Keyboard) and after Tap Return after labeling)
This App is designed for iPhone.