In version 1.1 we added notifications to PrayZ. It now sends notifications to everyone in a prayer group when someone in a group creates or modifies a prayer request or posts a comment about their prayer request. If another person posts a comment on a prayer request, the author of the request will receive a notification. PrayZ shows the notification on your device and displays a badge count next to the prayer request that is changed. Remember to allow Notifications when prompted by iOS during the installation/upgrade.
If you didn’t allow notifications, you can change your designation in the device Settings.