It’s a big week in the world of social photo-sharing apps, with Instagram getting a redesign, Twitter adding photo filters, and now Yahoo relaunching the iPhone app for Flickr.

Yes, remember Flickr? One of the first widely-popular photo-sharing services on the web failed to make a big impact on mobile, leaving the way clear for startups like Instagram to shoot to prominence. Which may well be the reason the new Flickr app looks a lot like Instagram, with some interesting twists.

“The all-new Flickr App is a complete redesign of the previous version.  It’s now easier to use, more beautiful and includes more of the great features you love using on Flickr.com,” explains its App Store listing.

16 “unique” camera filters are included in the app, as well as options to explore interesting snaps “from around the world and nearby”, and proper support for Flickr’s Groups feature.

The app’s relaunch is part of the wider reboot of Yahoo as a company by CEO Marissa Mayer, who joined from Google earlier this year. Judging by her public appearances so far at conferences, Mayer sees mobile as the main engine for Yahoo’s growth in the coming years.