This application is bone marrow cells differential counter for clinical works in the animal hospital. - Touch cell button - Count up & count down mode - A pop-up notification will appear when the total count reaches 100, 200, 500, and 1000 - Undo 3 previous count - Archive count data Vibration and/or sound tell you counting while using microscopy. You can choice vibration and/or sound. If you notice any problem, please tell me.