Apps like Demo Mode Settings

Here are some great alternatives to Demo Mode Settings by Nightly Nexus :
Dev Quick Settings Tiles
Dev Quick Settings Tiles
★4.7
Settings Editor Pro
Settings Editor Pro
★4.3
Quick Settings for Android
Quick Settings for Android
★4.7
Gray-Switch (Grayscale)
Gray-Switch (Grayscale)
★3.8
Pixel Tuner - SystemUI Tuner
Pixel Tuner - SystemUI Tuner
★3.8
[Substratum] Samsung System Mo
[Substratum] Samsung System Mo
★3.5
Terminal Pro - Green CRT Theme
Terminal Pro - Green CRT Theme
★4.2
Super Quick Settings Pro
Super Quick Settings Pro
★4.5
Dark Void - Black Circle Icons
Dark Void - Black Circle Icons
★4.0
Icon Changer - App Icon Pack
Icon Changer - App Icon Pack
★3.9
Baked - Dark Android Icon Pack
Baked - Dark Android Icon Pack
★4.8
Statusbar Icon Hider Customize
Statusbar Icon Hider Customize
★3.3
Battery Percentage Display
Battery Percentage Display
★3.9
Material Things - Icon Pack
Material Things - Icon Pack
★4.2
Aesthetic Icons: Icon Changer
Aesthetic Icons: Icon Changer
★4.1
Material Things Pro - Icons
Material Things Pro - Icons
★4.7