Linktree, a popular “link in bio” service, is launching a mobile app on iOS and Android, the company announced on Tuesday. Previously, you’ve had to log into Linktree through a browser on desktop or your phone to manage your profile, but if you prefer an app, that will now be an option. The “majority” of Linktree’s signups and logins from its more than 25 million users happen on a mobile device, according to a Linktree press release, so this new app could prove to be a popular…