Underlairs is a focus music timer application designed to help users escape distractions and achieve deep concentration. It combines a Pomodoro-style focus timer with carefully curated ambient music playlists specifically created for working, studying, and creative activities.

The app features a focus timer with customizable durations of 15, 25, 45, or 60 minute sessions. Beast Mode allows for unlimited music playback without any timer restrictions. Users can select from five unique ambient playlists called lairs, each with distinct soundscapes. Background playback enables music to continue when the phone is locked, and lock screen controls allow play, pause, and skip functionality. The app includes stats tracking to monitor focused minutes and daily streaks, all within a minimal, distraction-free interface.

Underlairs operates through a simple four-step process: users first choose their preferred lair from the available ambient soundscapes, then set their desired timer duration or select Beast Mode for continuous music. After pressing play, they immerse themselves in the music while focusing on their work. The app tracks progress by monitoring focused minutes and maintaining streak counts to encourage consistent usage.

The app provides benefits for various productivity scenarios including remote work, exam studying, writing, and creative projects. It's designed to help anyone seeking deep work sessions by combining structured timing with immersive audio environments that support concentration and minimize distractions.

Underlairs targets remote workers needing focus, students studying for exams, writers and creators, and anyone seeking deep work capabilities. The app requires no account creation and maintains user privacy by keeping all data on the device without collection or tracking. It's available as a mobile application for iPhone, iPad, and iPod touch devices running iOS 13.0 or later.