If you don’t hearing sound from our apps on your iOS device (iPhone, iPad, etc). Here are some things to check:

1. Mute button on iOS Devices (NOTE: some apps/games may still play sound even with the device muted, but our apps won’t.) 
2. iPad has a special soft-mute button that can be quite confusing. The “soft-mute” button on iPad.
3. Turning on/off music from within the app:
   • (Wonster Words) “Music” Option
   • (Puzzingo Puzzles) “Music” Option
4. Lastly, if the mute button had been reconfigured to be rotation lock, it can’t be used to unmute. Apple support article on Mute/Rotation Lock

Please give these a try, one of them should resolve the sound issue. If you are still having issues, please contact us at support@77sparx.com.