Unfortunately some people ignore the principles of “Open Source” and the GPL. Again I have to deal with an illegal copy of Periodical (also see Again an illegal copy of Periodical and Illegal copy of Periodical). This time it is called “Periods Tracker”, published by “joettaraubapps” (https://play.google.com/store/apps/details?id=com.joettaapps.periodstracker):
Many thanks to Marie of https://bloodyhealth.gitlab.io for the hint via e-mail!
The procedure corresponds to the known pattern – one takes the sources, removes all references to the original and inserts advertising or offers the app as a paid version. I have already contacted “joettaraubapps” by e-mail and also sent a notice about a copyright infringement to Google.
As a reminder: The GPL is legally binding and derivative copies of my app must comply with certain conditions!