It’s looking pretty likely that Instagram is gearing up to introduce its own Snapchat competitor, and it’s going to be a standalone app, not integrated into the main app itself. Confused Android users on Thursday started taking to Twitter to highlight a strange entry, called Bolt, that mysteriously started showing up inside the main Instagram app. Only, when you clicked on the link to download, it went to a broken page in the Google Play store. So what gives? Instagram hasn’t officially announced any Snapchat competitor, and there’s no indication the service ever had any interest to begin with. But given Snapchat’s immense popularity, and Facebook’s obvious envy of the service, it’s no surprise to see Instagram jumping into the fray. The photo-sharing app has continued to grow at a rapid rate since its acquisition by Facebook, so if any service can take on the Snapchat juggernaut, it might be Instagram.