Recently it was reported that Todo Q was having trouble responding to an alarm with a vibration notification. Somehow I removed the VIBRATE permission from the manifest.
The latest release of Todo Q resolves this problem. I also combined two checkboxes into a single dropdown to control the time & location alarms. This is in preparation for introducing timebound location alarms, i.e., a location alarm enabled only for a specific time period.
Todo Q is available for $1.99 on the android market. Try it today.