The app is simply called Before and After by Ivan Perre.
|The app helps you line up the photos to take great before and after shots. Notice the window box is in the exact same position in each of these photos taken months apart!|
The app works for anything where you would want a transparent image overlay of the previous version, but I love it for landscape photos in particular. It really helps the effect and to show the progress over time when you can line the camera up in almost the exact spot it was before (without leaving it outside on a tripod for days just to stay in the same position).
The app also arranged the before and after photos in a side-by-side end result, which is helpful and quick, but you can also just save the original photos and just use the app to help you line up the shot.
|Lilium 'After Eight' opening with before and after app, photos taken 2 days apart|
|The app interface looks super basic, but hey, it does the job and it's super simple!|
|This is exactly what I've been looking for, a camera app that lets you line up your shot with a ghost of the previous shot, a transparent overlay of the 'before' image.|