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 been redesigned or gone offline, so I have removed the direct link to it. The screenshot below hopefully preserved enough of the design but if you are really keen to inspect further, try this Archive.org link. FYI: the site was first featured on 20 May 2016.