A calm breathing app for relaxation, sleep and focus. Follow a glowing orb through five guided exercises, train your breath-hold, and relax to six soothing soundscapes. Daily streaks and a progress calendar help you build a healthy breathing habit.
Breathe with the light
A living orb guides every breath. Soft tones rise as you inhale, gentle singing-bowl chimes mark each phase, and particles of light flow in and out with your breathing. Watch the orb, or close your eyes and simply follow the sound.
Guided exercises
Calm Down: longer exhales that help your body settle
Box Breathing: four equal sides for steady focus
4·7·8: a long pause and a slow release, made for bedtime
Coherence: an even rhythm of about five and a half breaths a minute
Lung Builder: deep breaths with a hold that grows every round
Choose 2, 5, 10 or 15 minute sessions and pause at any time.
Breath-hold test
A short guided warm-up, then hold as long as feels comfortable. Lung Lab records your personal best and shows how it improves over the weeks.
Six relaxing soundscapes
Rain, Ocean, Wind, Stream, Fireplace and Night: seamless, high-quality ambience you can play under any exercise, with its own volume control.
Build a daily habit
Day streaks and your longest streak
An activity calendar of every day you practiced
A breath-hold trend chart
Total minutes practiced
All progress is saved automatically on your PC.
Gentle and safe
Built-in tips help you get started, relax more deeply and train safely. A “Not feeling well?” button on every exercise pauses everything and calmly walks you through what to do.
Made for your screen
Smooth, high-resolution visuals from laptops to 4K and ultrawide monitors
Fullscreen, or a resizable window with its own custom frame
13 languages, switchable instantly
Simple keyboard and mouse controls
Lung Lab is a relaxation and breathing practice tool, not a medical device. It does not diagnose, treat or prevent any condition. If you have a heart or lung condition, are pregnant, or have any health concerns, talk to a doctor before doing breath-hold exercises. Never practise breath-holds in or near water or while driving.