Checkity Check Check allows you to create visual checklists that allows you to take photos and/or (3 second) videos of each item on each checklist. Each photo has the timestamp added into the image and each video is recorded with a date and timestamp and you can easily review them later. It answers the question at the back of your mind when you're already sitting on the train leaving the station having left in a rush "Did I really, REALLY turn off the iron?"....