People love documenting the positive changes in their life: be it a baby growing up, a weight loss, or a crafting project. Dedicated change-trackers will do a project where they take a photo every day of the subject, aligned perfectly so that they can stream the photos one-after-another in a time-lapse style video. I wanted to do one of these, but quickly realized how difficult it was to either A) align each picture the exact same way as the previous or B) edit each picture to align to each other.
I built an Android App, LifeTimeLapse, which overlays the previous photo in your project over the viewfinder, so you know how to line up perfectly. It then takes your project and compiles it together into a time-lapse video.