The App Store today turned five, and Apple’s been celebrating by making a bunch of apps and games free. (Top tip: they’re all worth a download.) Today’s app landscape is incredible. Apple reckons over 900,000 apps are available, and devs have made billions of dollars from iOS. Not bad for a platform that on launch had just 500 titles.

But which apps have really stood out over the years? Which have influenced those that came later? I knocked heads with Stuff’s editor and we came up with ten apps that changed everything. Doubtless, you’ll have your own thoughts on which apps were hugely important; if so, please leave a comment on the Stuff article (or here, if you like).

I hope you enjoy reading the feature and that it brings back some warm memories!