Breathing Exercise - Calmerra

Science-backed breathing techniques for better sleep, sharper focus, and instant calm. Just follow the circle. No counting needed.

Breathe better. Sleep deeper. Focus sharper.

Calmerra is a beautifully simple breathing app grounded in science. Choose your intention — whether it's winding down for sleep, sharpening your focus, or resetting after a stressful moment — and Calmerra recommends the right technique for you.

No confusing instructions. No counting. Just follow the animated circle and breathe.

9 SCIENCE-BACKED TECHNIQUES Each method is rooted in peer-reviewed research, including the Stanford-developed Physiological Sigh for instant stress relief, 4-7-8 breathing for sleep, Box Breathing used by Navy SEALs, and more.

BREATHE WITH PURPOSE Tell Calmerra what you need right now:

Better Sleep Feel Calmer Sharpen Focus Reset Energy Quick Stress Relief Get a personalized recommendation in seconds.

VISUAL-FIRST DESIGN A gentle animated circle guides your inhale, hold, and exhale. No numbers to track. No voice telling you what to do. Just you and your breath.

TRACK YOUR PROGRESS Build a daily breathing habit with session history, streaks, completion rates, and stats. See your favorite techniques and total mindful minutes at a glance.

APPLE HEALTH INTEGRATION Sessions automatically sync as Mindful Minutes in Apple Health, so your breathing practice lives alongside the rest of your wellness data.

CUSTOMIZE YOUR PRACTICE Adjust phase timing, set your number of cycles, and toggle haptic feedback to make each session yours.

NO ADS. NO CLUTTER. Calmerra is designed to calm you, not distract you. A clean, warm interface that feels like a deep breath the moment you open it.

What's Inside:

• 4-7-8 Breathing • Box Breathing • Equal Breathing • Resonance Breathing • Physiological Sigh • 4-6 Breathing • 4-8 Breathing • 1:2 Ratio Breathing • Rectangle Breathing