iPhone and iPad
There is no sound coming from the app.
Option 1: check the mute switch on the side of your device, next to the volume keys. If you still have no sound, try option 2.
Option 2: Double tap the home button. A menu of recently used apps will appear at the bottom of your screen.
Swipe that menu from left to right, and another menu will appear that has a speaker icon with a line through it.
Tap the speaker icon to disable mute.
Option 3: Open Settings > Use Side Switch for > Switch from rotation lock to mute. Go back to the app and check for sound.
App did not download/install to my device.
To install manually, open App Store > Updates > Purchased > Locate the app and tap the cloud icon to install.
Alternately, go back to the app listing on the App Store and reinstall from there. You will not be charged twice for the same app.
The App Store listing says "INSTALLED" but I cannot find it on my device.
Option 1: Do a Spotlight search to locate the app. To do a Spotlight search, swipe to the left of the homescreen and a search bar will appear. Type in the name of the app.
Option 2: Force quit the App Store application: double tap the home button. A menu of recently used apps will appear at the bottom of your screen. Swipe through this menu until you find the App Store icon. Hold your finger over the icon until a red minus sign appears. Tap the red minus sign to force quit the app. Now go back into the App Store and see if you can reinstall.
Option 3: Reboot your device by holding down the sleep/wake button and the home button at the same time. Turn your device back on by holding down the sleep/wake button. Now go back into the App Store and see if you can reinstall.
Can I use these apps on a computer?
Unfortunately, no. These apps are only designed for mobile devices such as the iPhone, iPad, iPod Touch, Android phones, etc.