A free program for Android, by Map05.

Photo Stamp Camera is an Android software that allows you to add a time stamp, a location stamp, and a signature stamp to any photo you take. You can drag and drop the position of your stamp with this software. You can also alter the font, font color, and font size of the stamps. This also entails modifying the  Shadow color and transparency of a stamp. If you turn on GPS while using the app, it can also add your location address automatically. You can also utilize your logo as a photo’s signature. Furthermore, this app also supports the dark theme.