Hi all -- your quick advice sought, and thanks in advance!

I used to use TriggerTrap to capture multiple hours of time lapse photos on my iPhone where I would later manually stitch together the photos into a movie with music, etc. But recently I discovered that they yanked the capability to use the iPhone internal camera.

Do you know any good (hopefully free) app that still offers the ability to automatically take hours of e.g. 20-second interval photos where the raw photo files are preserved on the camera for me to download?

I do not want one of the apps that automatically turns this into a movie and deletes the original photos -- there are plenty of those apps.

Thanks for any suggestions!