Resonance Breath
Guided slow breathing for calm
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Open the app, tap once, and breathe.
A sun grows as you breathe in and shrinks as you breathe out, while a soft tone rises and falls on exactly the same clock. Match your breath to the sun. That is the whole app.
WHY THIS PACE
Your heart speeds up a little as you breathe in and slows as you breathe out. Breathing slowly, about five to six breaths a minute, makes that rise and fall as large and smooth as it can be.
That swing is your heart rate variability, or HRV. A higher, steadier HRV is one of the clearest signs of a nervous system that copes well with stress, and this pace of breathing is one of the most reliable ways to raise it.
Ten minutes a day for five to six weeks lifts your resting HRV. In studies, breathing like this has helped people feel calmer, sleep better, and stay steadier under pressure.
The app links to the research it is built on, so you can read it yourself.
WHAT IT DOES
- A sun that breathes, drawn to be watched in a dark room without glare
- A tone that swells and eases on the same clock as the sun, never out of step
- A soft tap at the turn of each breath, so you can practise with your eyes closed
- Your own pace, from 4.5 to 7 breaths per minute. The ideal one is personal
- Sessions of 3, 5, 10 or 15 minutes
- Keeps playing with the screen off
- A quiet record of your practice, kept on your device
WHAT IT DOES NOT DO
No account. No sign-up. No email address. No subscription. No advertising. No analytics of any kind. No streak nagging, no badges, no confetti.
And no internet: the released app does not even ask for network permission. Your settings and your practice history never leave your phone.
BREATHE GENTLY
This is about rhythm, not big breaths. Keep it light and shallow. If you ever feel lightheaded, breathe normally for a moment.
Resonance Breath is for wellbeing and relaxation. It is not a medical device and not a substitute for medical care.
MADE WITH CARE
We built this the same way we build Pecto - language learning made easy for busy people. Made for ourselves, our families, and everyone who wants a little more calm and a little more progress in their day.
pecto.ai
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Choose how a session sounds. Alongside the original drone there is now Music — a chord that turns with the breath — and Hush, quieter still, for practising in near-silence. Pick one in Settings.
Whichever you choose, the sound follows the same clock as the sun.
The developer, ThinkAI Oy, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- ThinkAI Oy
- Size
- 22.2 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
9+
- 9+
- Contains
Health or Wellness Topics
- Copyright
- © 2026 ThinkAI Oy