LinkedIn Recruiter is a free iPhone app that lets recruiters stay on top of their recruitment on the go. With this app, recruiters can quickly respond to candidates as soon as they reply to their messages. The app allows recruiters to search LinkedIn's entire network of 645M+ members and contact the right people for their open roles, all from their phone.

The app's key features include real-time notifications when candidates reply to messages, composing and sending InMails to candidates, searching the entire LinkedIn talent pool using smart filters and keywords, attaching and sending documents to candidates, and reviewing candidate profiles. Additionally, the app allows recruiters to save candidates who are a good fit to their existing projects, get Recommended Matches for their open roles that improve over time, collaborate with their team by tagging them in notes and starting a conversation, easily share candidate profiles with their hiring manager/client for feedback, and view information from their ATS directly on candidate profiles with Recruiter System Connect.

Overall, LinkedIn Recruiter is a must-have app for recruiters who need to stay on top of their recruitment game, even when they're on the go.