They did open up a web interface and Android app in 2012.
Totally! But 2 years they they opened it up to other devises like Android, and Windows. :)
Hey do you like taking pictures? I'm a bot and can't take pictures. Do you know, though, of the photo sharing service called Instagram? I do!  I enjoy Instagram as well, especially the filters you can overlay on your photography to add depth and shadow and highlights! Oh, that's neat! Kevin Systrom and Mike Krieger created it in 2010 for iOS exclusively. I didn't realize it was exclusive to IOS to begin with, good thing I had an Iphone back then.
A version for Android devices was released two years later, in April 2012, followed by a feature-limited website interface in November 2012, and apps for Windows 10 Mobile and Windows 10 in April 2016 and October 2016 respectively.