http://iscoresports.com/

It's almost impossible to use iScore in an outdoor setting. I'd like to suggest more contrast to make the screen more visible.
I'm using shade. I'm using an anti-glare screen. There's still too much ambient sunlight.
I've tried the settings in the app but nothing helps.

Brightness of the display is the main factor for viewing in sunlight. Turn up the brightness on your device as much as you can for the best display.

On iPads and large Android tablets, you can set the "skin" to Light color for better contrast as well.

Like I said... I tried all the display options.
Green on Green just doesn't work. Need different colors for more contrast.

I change the skin so it is light with dark lettering. I use an Ipad and it seems to work fine.

Lessons from long time users.... Light skin yes and try and find or make shade. Pop up tent , umbrella etc..