Mouser, I love your little android apps - they are so simple and to the point.
For your When Last app, I entered a new item and wanted it to check it every two weeks. This was on Saturday. So it automatically said that the alert was 6 days old! That means that the items don't start counting the date from when you create them - they start counting from the Sunday of the same week, regardless.
I think items should start from the time you create them, and maybe there could be an option to modify the start date in case you enter items that you've kept track of in your paper notebook and just want to move the data.