Use APKPure App
Get Unit Tags IDF old version APK for Android
Search for IDF unit tags by shape and color
Unit Tags IDF is an app that enables you to search for IDF unit tags by the way they look.
Enter the shape and colors of the tag you saw and the app will show you matching options.
The app will also display additional information on any tag you found.
When you download the app the tutorial for using the app automatically launches by the end of which you can search for tags on your own.