diff --git a/preload/apps/g_watch/README.md b/preload/apps/g_watch/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..30f6005e3a949ad3714076a73dfa31aea1bea447
--- /dev/null
+++ b/preload/apps/g_watch/README.md
@@ -0,0 +1,11 @@
+#G-Watch
+A gesture controlled power-saving digital clock. It can replace main.py as standard watch.
+
+###How to use:
+Hold your arm roughly straight and turn your wrist quickly. The digital clock will appear on the screen and fade out after a few seconds.
+
+###Features:
+* Gesture controlled
+* Screen brightness adapts to environment brightness
+
+Uses code from watch++
\ No newline at end of file
diff --git a/preload/apps/g_watch/__init__.py b/preload/apps/g_watch/__init__.py
new file mode 100644
index 0000000000000000000000000000000000000000..44cca69b5f2b227f85227d4549244a5ccde951df
--- /dev/null
+++ b/preload/apps/g_watch/__init__.py
@@ -0,0 +1,314 @@
+import buttons
+import display
+import ledfx
+import leds
+import math
+import bhi160
+import utime
+import power
+import light_sensor
+
+disp = display.open()
+sensor = 0
+sensors = [{"sensor": bhi160.BHI160Orientation(sample_rate=8), "name": "Orientation"}]
+
+DIGITS = [
+ (True, True, True, True, True, True, False),
+ (False, True, True, False, False, False, False),
+ (True, True, False, True, True, False, True),
+ (True, True, True, True, False, False, True),
+ (False, True, True, False, False, True, True),
+ (True, False, True, True, False, True, True),
+ (True, False, True, True, True, True, True),
+ (True, True, True, False, False, False, False),
+ (True, True, True, True, True, True, True),
+ (True, True, True, True, False, True, True)
+]
+
+DOW = ['Mo', 'Tu', 'We', 'Th', 'Fr', 'Sa', 'Su']
+
+led_count = 11
+b7=255 # brightness of 7-segment display 0...255
+
+def ceil_div(a, b):
+ return (a + (b - 1)) // b
+
+
+def tip_height(w):
+ return ceil_div(w, 2) - 1
+
+
+def draw_tip( x, y, w, c, invert=False, swapAxes=False):
+ h = tip_height(w)
+ for dy in range(h):
+ for dx in range(dy + 1, w - 1 - dy):
+ px = x + dx
+ py = y + dy if not invert else y + h - 1 - dy
+ if swapAxes:
+ px, py = py, px
+ disp.pixel(px, py, col=c)
+
+
+def draw_seg( x, y, w, h, c, swapAxes=False):
+ tip_h = tip_height(w)
+ body_h = h - 2 * tip_h
+
+ draw_tip( x, y, w, c, invert=True, swapAxes=swapAxes)
+
+ px1, px2 = x, x + (w - 1)
+ py1, py2 = y + tip_h, y + tip_h + (body_h - 1)
+ if swapAxes:
+ px1, px2, py1, py2 = py1, py2, px1, px2
+ disp.rect(px1, py1, px2, py2, col=c)
+
+ draw_tip( x, y + tip_h + body_h, w, c, invert=False, swapAxes=swapAxes)
+
+
+def draw_Vseg( x, y, w, l, c):
+ draw_seg( x, y, w, l, c)
+
+
+def draw_Hseg( x, y, w, l, c):
+ draw_seg( y, x, w, l, c, swapAxes=True)
+
+
+def draw_grid_seg( x, y, w, l, c, swapAxes=False):
+ sw = w - 2
+ tip_h = tip_height(sw)
+
+ x = x * w
+ y = y * w
+ l = (l - 1) * w
+ draw_seg( x + 1, y + tip_h + 3, sw, l - 3, c, swapAxes=swapAxes)
+
+
+def draw_grid_Vseg( x, y, w, l, c):
+ draw_grid_seg( x, y, w, l, c)
+
+
+def draw_grid_Hseg( x, y, w, l, c):
+ draw_grid_seg( y, x, w, l, c, swapAxes=True)
+
+
+def draw_grid( x1, y1, x2, y2, w, c):
+ for x in range(x1 * w, x2 * w):
+ for y in range(y1 * w, y2 * w):
+ if x % w == 0 or x % w == w - 1 or y % w == 0 or y % w == w - 1:
+ disp.pixel(x, y, col=c)
+
+
+def draw_grid_7seg( x, y, w, segs, c):
+ if segs[0]:
+ draw_grid_Hseg( x, y, w, 4, c)
+ if segs[1]:
+ draw_grid_Vseg( x + 3, y, w, 4, c)
+ if segs[2]:
+ draw_grid_Vseg( x + 3, y + 3, w, 4, c)
+ if segs[3]:
+ draw_grid_Hseg( x, y + 6, w, 4, c)
+ if segs[4]:
+ draw_grid_Vseg( x, y + 3, w, 4, c)
+ if segs[5]:
+ draw_grid_Vseg( x, y, w, 4, c)
+ if segs[6]:
+ draw_grid_Hseg( x, y + 3, w, 4, c)
+
+
+
+
+def render_num(num, x):
+ draw_grid_7seg( x, 1, 7, DIGITS[num // 10], (b7, b7, b7))
+ draw_grid_7seg( x + 5, 1, 7, DIGITS[num % 10], (b7, b7, b7))
+
+
+def render_colon():
+ draw_grid_Vseg( 11, 2, 7, 2, (b7, b7, b7))
+ draw_grid_Vseg( 11, 4, 7, 2, (b7, b7, b7))
+
+
+def render7segment():
+ year, month, mday, hour, min, sec, wday, yday = utime.localtime()
+
+ render_num( hour, 1)
+ render_num( min, 13)
+
+ if sec % 2 == 0:
+ render_colon()
+
+
+
+
+with display.open() as disp:
+ disp.clear().update()
+
+ bri=0
+ threshold_angle=35
+ zn=0
+
+ yo=0 #old y value
+ yn=0 #new y value
+ yd=0 #y difference
+ ydl=0 #yd lpf
+ clock_on=utime.monotonic_ms() #time in ms when clock is turned on
+ timeout=7000 #time in ms how long clock will be displayed
+ clock_off=clock_on+timeout #time in ms when clock is turned off
+ fade_time=0 #fade out counter
+
+ leds.dim_top(2)
+ leds_on=0
+ p_leds_on=0
+
+
+ while True:
+ millis=utime.monotonic_ms()
+ lt = utime.localtime()
+ dow = lt[6]
+
+
+ #---------------------------------------- read brightness sensor
+ bri=light_sensor.get_reading()
+ bri=int(fade_time*100/1000 * bri/200) # calculate display brightness in percent (bri)
+
+ if (bri>100):
+ bri=100
+ if (bri<0):
+ bri=0
+
+ ledbri=((bri/2)+50)/100 # calculate led bar brightness (ledbri = 0...1)
+
+
+ #---------------------------------------- read buttons
+ pressed = buttons.read(buttons.BOTTOM_LEFT | buttons.BOTTOM_RIGHT)
+ p_leds_on=leds_on
+
+ if pressed & buttons.BOTTOM_LEFT != 0:
+ leds_on=0
+ disp.clear()
+ disp.print('LEDS OFF', posx=40, posy=30, font=2)
+ disp.update()
+ disp.backlight(brightness=50)
+ utime.sleep_ms(500)
+ disp.backlight(brightness=0)
+ for led in range(led_count):
+ leds.prep_hsv(led, [0,0,0])
+ disp.update()
+
+ if pressed & buttons.BOTTOM_RIGHT != 0:
+ leds_on=1
+ disp.clear()
+ disp.print('LEDS ON', posx=40, posy=30, font=2)
+ disp.update()
+ disp.backlight(brightness=50)
+ utime.sleep_ms(500)
+ disp.backlight(brightness=0)
+
+
+
+
+ #---------------------------------------- read orientation sensor
+ samples = sensors[sensor]["sensor"].read()
+ if len(samples) > 0: #get orientation sensor samples
+ sample = samples[0]
+
+ yo=yn #calculate absolute wrist rotation since last check
+ yn=sample.y+360
+ yd=abs(yn-yo)
+ yd=yd%180
+ yd=yd*22 #multiply rotation with amplifier
+
+ if abs(sample.z)>50: #if arm is hanging:
+ yd=0 #do not regard wrist rotation
+
+ ydl=ydl*.9
+ ydl=(yd+ydl*9)/10 #low pass filter wrist rotation
+
+ if ydl>100: #check rottion against threshold and limit value
+ ydl=100
+
+ if clock_on+timeout<millis:
+ clock_on=millis
+ clock_off = timeout+clock_on
+
+ #.................................... display rotation bargraph on leds // full bar == hitting threshold
+
+ if (leds_on==1):
+ hour = lt[3]
+ hue=360-(hour/24*360)
+
+
+ for led in range(led_count):
+ if(led<int(ydl/100*12)-1) or millis<clock_off-1500-((10-led)*15)+300:
+ leds.prep_hsv(10-led, [hue,100,ledbri])#led=0
+ else:
+ leds.prep_hsv(10-led, [0,0,0])
+
+
+ #---------------------------------------- display clock
+ disp.clear()
+ if clock_off>=millis:
+
+ #.................................... time
+ lt = utime.localtime()
+ year = lt[0]
+ month = lt[1]
+ day = lt[2]
+ hour = lt[3]
+ mi = lt[4]
+ sec = lt[5]
+ dow = lt[6]
+
+
+ fade_time = clock_off-millis-1000 #calculate fade out
+
+ if fade_time<0:
+ fade_time=0
+
+ if fade_time>1000:
+ fade_time=1000
+
+ disp.backlight(brightness=bri)
+
+ render7segment() #render time in 7-segment digiclock style
+
+ disp.print('{:02d}-{:02d}-{} {}'.format(day, month, year, DOW[dow]), posx=10, posy=67, font=2) # display date
+
+
+ #.................................... power
+ pwr=math.sqrt(power.read_battery_voltage())
+
+ #disp.print("%f" % power.read_battery_voltage(), posx=25, posy=58, font=2) # display battery voltage
+ full=2.0
+ empty=math.sqrt(3.4)
+ pwr=pwr-empty
+ full=full-empty
+ pwrpercent=pwr*(100.0/full)
+ #disp.print("%f" % pwrpercent, posx=25, posy=67, font=2) # display battery percent
+
+ if pwrpercent<0:
+ pwrpercent=0
+
+ if pwrpercent>100:
+ pwrpercent=100
+
+ disp.rect(8, 60, 153, 63, col=[100,100,100]) # draw battery bar
+
+ c=[255,0,0] #red=empty
+ if pwrpercent>10:
+ c=[255,255,0] #yellow=emptyish
+ if pwrpercent>25:
+ c=[0,255,0] #green=ok
+
+ disp.rect(8, 60, int(pwrpercent*1.43+8), 63, col=c) # draw charge bar in battery bar
+
+
+
+
+ #---------------------------------------- do not display clock
+
+
+
+
+ leds.update()
+ disp.update()
+
+
diff --git a/preload/apps/g_watch/metadata.json b/preload/apps/g_watch/metadata.json
new file mode 100644
index 0000000000000000000000000000000000000000..9eeebd01ef7a9ec375ec9b850f198b6f1f5f06b8
--- /dev/null
+++ b/preload/apps/g_watch/metadata.json
@@ -0,0 +1 @@
+{"name":"G-watch","description":"#G-Watch\r\nA gesture controlled power-saving digital clock. It can replace main.py as standard watch. \r\n\r\n###How to use: \r\nHold your arm roughly straight and turn your wrist quickly. The digital clock will appear on the screen and fade out after a few seconds.\r\n\r\n###Features:\r\n* Gesture controlled\r\n* Screen brightness adapts to environment brightness\r\n\r\nUses code from watch++","category":"utility","author":"royrobotiks","revision":7}
\ No newline at end of file