Does Flasher also have a short blinker that turns off automatically?

Yes, Flasher has a short indicator and a continuous indicator. You can simply choose between the indicators in the Flasher App:

• Standard Indicator: Swing your elbow to switch the indicator on and off.
• Pro Indicator: Here you have a short indicator (Short-Blink = blinks 4 times, you don't have to switch it off again) and a long indicator (Long-Blink = continuous blinking until you swing your elbow again).