BreathStack
Breathe with intention. Nothing leaves your phone.
Box, 4-7-8 and coherent breathing for calm, sleep and focus. A full-screen pacer, soundscapes and HRV in Apple Health. Pay once — no subscription.
BreathStack
wellness
Breathe with intention. Nothing leaves your phone
What you get
BreathStack was built for exactly this.
The core features that make BreathStack different from the generic alternatives.
Fall asleep, sharpen focus, or calm a racing chest with proven breathing patterns — Box breathing, 4-7-8, Coherence (5.5), and a slow 4-6 calming breath — each with the right counts already dialled in.
Build your own breath
tune the inhale, hold and exhale to any rhythm, watch your breaths-per-minute update live, and save the custom pattern to your library.
Just follow the orb. A full-screen breath pacer expands and contracts with every phase, with gentle synthesised audio cues and a light haptic tap on each inhale — eyes open or eyes closed.
Pick a goal — Sleep, Calm, Focus or Energy — and drop into curated sessions like One-Minute Reset, Deep Sleep or Anxiety Relief, layered with soundscapes
rainfall, ocean shore, night forest, warm drone, embers, or pure silence.
See it actually working. With your permission, BreathStack reads your heart-rate variability (HRV) and respiratory rate before and after a session and logs Mindful Minutes to Apple Health — honest feedback, no vanity metrics.
Track your streak and weekly mindful minutes on a clean, local timeline — completely private and offline. Your patterns, sessions and history live only on your device (SwiftData). No account, no analytics, no tracking, nothing phoning home.
A note from the studio
“I wanted a breathing app I could actually trust: correct rhythms, a calm pacer, and real feedback from my own body — without a subscription, a streak nagging me, or my data leaving the phone. So I built BreathStack with no analytics and no servers of its own; it genuinely can't phone home. It just helps you breathe.”
How it works
Three steps. No account. No tracking.
01
Build or pick a stack
Choose from six techniques or a starter stack, set durations to taste, and reorder the blocks.
02
Press play
Follow the full-screen breath guide — an animated circle, audio cues, and a light haptic tap on each inhale.
03
See the effect
With Apple Health permission, BreathStack captures your HRV delta and logs the session as Mindful Minutes.
Not shipped yet
Notify me when BreathStack ships.
It'll launch at $19 — pay once. Free tier: full technique library plus one session a day, free to try.
One email when it lands on the App Store. No drip sequence.
No spam. No tracking. Email only — unsubscribe with one click.
From the journal
Notes on the practice.
- 01
Coherent Breathing: Why About Six Breaths a Minute Tunes Your Heart
Coherent breathing means slowing to roughly six breaths a minute to hit your body's resonance frequency. Here's the baroreflex science and how to find your own pace.
2026-06-14
7 min read
- 02
CO2 Tolerance: Why You Feel Breathless So Easily (and How to Train It)
How to improve CO2 tolerance with simple breathing practice. Learn why air hunger hits early, what your BOLT score reveals, and how slower breathing retrains it.
2026-06-13
7 min read
- 03
The Physiological Sigh: The Fastest Breath to Calm Down in Real Time
The physiological sigh — a double inhale and long exhale — is the fastest evidence-based way to calm down in real time. Here's the physiology behind why it works.
2026-06-11
6 min read
- 04
How to Build a Breathwork Habit That Actually Lasts
Most breathing practices die in week two. Building a breathwork habit that lasts means small fixed sessions, the right anchor, real feedback, and dropping the streak obsession.
2026-06-11
7 min read
- 05
Box Breathing vs. Pranayama: Which Should You Actually Learn?
A clear comparison of box breathing vs pranayama — what each is good for, where box breathing's even ratio falls short, and when the classical system is the better investment.
2026-06-09
7 min read
The dispatch
A dispatch from the studio.
One short letter every few weeks. What we launched, what we cut, what we learned. No tracking pixels. Unsubscribe in one click.
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