Set of 21 screen tools using screen of smart phone. (various signals, signs, measuring tools, etc.)1) LED Torch: LED Torch using the camera flash LED flash light.( NEW!!)2) Banner: Display text message with large font,for using as a billboard banner.3) Magnifier : Magnifier with zoom function in camera.(Needed zoom camera).4) Screen Light : Light varying in brightness and color.(func.:Change colors)5) Strobe Light : Blinking flash light.(func.:Change colors)6) SOS Signal : SOS signal with blinking light.7) Manual Signal : You can turn on and off and make signals on your own.8) Light Stick : Can be used at performance halls. (func.:Change color and size)9) Blink Sign : Light sign that blinks periodically. (func.:Change period)10) Arrow Sign : Used to point somewhere when it is noisy or dark.11) Patrol Sign : Red and blue light just like that of a police car.12) DoNotDisturb Sign : Sign when you don’t want to be disturbed.13) Sleep Light : Light which slowly fades away in 10 minutes. Can be restarted. 14) Candle Light : Candle for romantic atmosphere.15) Candle Celebrations : Candles for celebrations.(func.:Turn on/off.Change numbers.)16) Ruler : Measure length using screen.17) Protractor : measure angles using screen.18) Horizontal Leveler : measure horizontality 19) Compass : integrated compass20) Counter : Count by touching. You can specify titles and save values. 21) Color Reference : Check RGB values and make your own color referring to the reference.