If you see the notifications and timer messages, but not hear them, it is probably due to your device’s notification/ringer volume settings.
First, check that your phone’s mute switch is not turned on. Second, check your settings:
- Open the Settings app
- Scroll down to “Sounds” and touch it.
- Check the volume under “Ringers and Alerts”
Thirdly, make sure HomeRoutines is allowed to play sounds on your device. The Notification Center, in your device’s Settings app, tells apps what sorts of reminders you want them to be able to give you.