New day, new tweak in Cydia: AppAlert. With AppAlert you can set an alert for any app and customize the content. When the time is up you will get an alert just like a push notification. Just click the view button you can launch the the application, or the close button to ignore.
NOTE: Configure AppAlert from the new icon added to your home screen.
AppAlert is availbel for $1.99 in Cydia Store via BigBoss repo