When Kevin Systrom and Mike Krieger co-founded Instagram in 2010, they basically invented photo-based social networking in the modern mobile era. Fast-forward to 2012 and a $1 billion acquisition ...

When Instagram was acquired for $1 billion in 2012, co-founder Kevin Systrom believed that joining Facebook would help Instagram’s “skyrocketing growth” reach even greater heights.

More than four years after Instagram’s founders left the company, they’re back with a new app. Kevin Systrom and Mike Krieger on Tuesday announced the launch of Artifact, an app that promises ...