Add GHCI to Your iPhone
Navigate to GHCI.org
Tap the Share button at the bottom of the page. On the bottom row of icons, scroll over until you see Add to Home Screen and tap this.
In the upper right corner, select Add
The GHCI.org shortcut icon will appear on your phone
Add GHCI.org To Your Android
Navigate to GHCI.org
Navigate to the menu on the GHCI.org webpage. Select add to Home screen.
Select Add
The GHCI.org shortcut icon will appear on your phone