I imagine that would be the most common use case and I think that's what @Gaetano_Patti needs. You can do other interesting things with it like asking enumerators to reset it to 1 in certain conditions (e.g. every hour, after they see a tree with parasite X) or you can count something else by using relevant conditions to only show the counter in certain conditions.
I think that in most cases these counts could be figured out in post-analysis using timestamps for sequencing but there may be reasons that the enumerators themselves need access to the counts. The counts can also be used in, for example, names for filled out forms.