Use APKPure App
Get Photo Printing Size old version APK for Android
Real simple to know the printing size!
This is a real simple application about photo size standard that will tell you about photo printing size such as "4R" equals 4" × 6" and it requires 1205 × 1795 px pic file resolution to print with 300dpi. Only one screen, one touch, you will get all you need to know!
Try it!