I approve your translation, but I thought this app already exists and could be installed on an android phone:
https://play.google.com/store/apps/details?id=com.aquilaecologie.sprinkenapp1
I found a review for this app in a thread
https://forum.waarneming.nl/index.php/topic,507173.0.html and I think this app needs some improvements.
And also the work on create a model for bat sounds, but that will take a year or two…
https://www.aquila-ecologie.nl/projecten-2/