For those who have color tint screens. This app will create a filter to reduce color tint on your screen, or use this app to dim your screen if it is too bright.
You can see result of filter by using 'Screen Test' which is included in this app, you can also use this feature to find dead pixels on your screen.
Furthermore, this app includes a funny feature "Filter Effect" which you can use 'Scanline Effect' to change your screen to be looked like CRT monitor.
Please read 'Term of Use' and 'Instruction' in this app carefully before using it.