Four & Six Breathing Exercise
Deep breathing: 4 in, 6 out
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Begin, put the phone in your pocket, and let it keep breathing with you. It carries on with the screen off. No ads, no account, nothing that touches the internet.
Four seconds in. Six seconds out. That is the whole app.
Press Begin. A slow shape opens and closes with your breath, and a quiet tone marks each turn. Then put the phone in your pocket. The session keeps counting and keeps sounding its cues with the screen off, and shows you where you are from the Lock Screen and the Dynamic Island — so you can shut your eyes and stop watching a screen, which is rather the point of a breathing app.
When it earns its place
Before you walk into the meeting. On the train home, eyes shut, earbuds in. In bed, when the day is still going round. In the car before the interview. Five minutes on the sofa when the evening has gone loud. Anywhere you have three minutes and a pocket.
What it does not do
It's free, and there is nothing inside it to buy. No ads. No account, no sign-in, no email address. No analytics, no tracking, no third-party code. It makes no network requests at all — there is no networking code in it — so nothing you do here can leave your phone.
The pattern does not change
Four in, six out. A longer exhale than the inhale, every time. There is no pattern picker and there will not be one. If you came for box breathing, 4-7-8 and a menu of twelve alternatives, this is honestly not the app for you. The fixedness is the design: nothing to configure means nothing standing between you and starting.
The rest of it
• Counts you in for three seconds, so the first inhale doesn't arrive while you're still putting the phone down
• Choose a length, or leave it open and end when you're ready
• Your history, with the last seven days shown as a window that recovers rather than a streak that breaks
• Optional mindful minutes written to Apple Health — write-only, and the app never asks to read anything back
• A Home Screen widget and a Control Centre control, to start without opening the app
• Ask Siri — "Breathe with Four & Six" — or start it from Spotlight or the Action button, phone still in your pocket
• Gentle haptics, and a tone you can turn off
• A morning and an evening appearance, chosen by the hour rather than by the system switch, because 6am and 11pm want different things
• Works entirely offline. On a plane, in a basement, in ten years.
Four & Six is a relaxation and focus aid. It is not a medical device, and it is not intended to diagnose, treat, cure or prevent any condition.
Ratings & Reviews
Nothing new inside — the app itself is unchanged, and four in, six out is still the whole of it. This release exists so the App Store page can say what the app is in the words people actually type when they go looking for one: deep breathing, slow breathing, and the local phrase in nine more languages.
The developer, RUSTAM ISMAILOV, 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
- RUSTAM ISMAILOV
- Size
- 7 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 43 more
- English, Arabic, Bengali, Catalan, Croatian, Czech, Danish, Dutch, Finnish, French, German, Greek, Gujarati, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Kannada, Korean, Malay, Malayalam, Marathi, Norwegian Bokmål, Oriya, Polish, Portuguese, Punjabi, Romanian, Russian, Simplified Chinese, Slovak, Slovenian, Spanish, Swedish, Tamil, Telugu, Thai, Traditional Chinese, Turkish, Ukrainian, Urdu, Vietnamese
- Age Rating
9+
- 9+
- Contains
Health or Wellness Topics
- Copyright
- © 2026 Rustam Ismailov
