This application is bone marrow cells differential counter for daily clinical works. The clear image tells you cells characteristics. - Touch cell button - Count up & count down mode - A pop-up notification will appear when the total count reaches 100, 200, 500, and 1000 - auto-calculate M/E ratio Vibration and/or sound tell you counting while using microscopy. You can choice vibration and/or sound. Cell differential was referred to "Schalm's Veterinary Hematology 6th ed." The terminology of erythropoiesis was different depending on your situation. If you notice any problems, please tell me.