Neat device animation as you scroll through this One Page (redesign) for the productivity ‘Pomodrone’ iPhone app. The source code for the page is available free here – cheers Alex!
This website has unfortunately redesigned or gone offline, so I have removed the link to it. The screenshot below hopefully preserved enough of the design but if you are really keen to inspect further, try this link on the Archive.org website. FYI: the site was first featured on 20 May 2016.