Breathe CLI – Paced resonance breathing in the macOS terminal

Hacker News

I built a terminal app that paces slow breathing at 6 breaths per minute for vagal tone training. It's a single Python file, stdlib only, no dependencies — just run breathe and follow the bar. I'm a cardiology patient (HFrEF). Slow breathing at resonance frequency is one of the few non-pharmacological interventions shown to improve cardiac vagal tone and baroreflex sensitivity (Bernardi et al., Circulation 2002; Lancet 1998). I wanted a frictionless daily habit tool — no app store, no account, no subscription, just open terminal and go. Design constraints, all grounded in the clinical literature: - No breath retention — Valsalva risk in cardiac patients - No rapid breathing — minimum 8-second cycles - Exhale ≤ 2x inhale — no evidence for extreme ratios - Immediate exit, always — q or Ctrl+C restores the terminal even on crash The README includes a resonance frequency measurement protocol for anyone with a chest-strap HRV monitor who wants to find their individual optimum instead of using the 6 bpm default. macOS only (uses afplay for audio cues). MIT licensed. pip install breathe-cli or brew tap marekkowalczyk/breathe && brew install breathe.

Visit product View on Hacker NewsMay 30, 2026

Share card

Actual performance

132points

55comments

Made the leaderboard

Launch Intel predictions

Analyze your own launch →

Indie HackersFits the IH revenue-focused audience · Strong signals: ios · Missing: supports, reddit linkedin, podcasting

71%71% predicted probability of success on Indie Hackers, based on ML models trained on real launch data.

best fitHighest predicted score across all platforms for this description.

Product HuntOn track for Day 1 leaderboard · Strong signals: mac, macos, single · Missing: agents, agent, cursor

56%56% predicted probability of success on Product Hunt, based on ML models trained on real launch data.

Hacker NewsMay not resonate with HN audience · Strong signals: ide, io · Missing: https docs, excited, just released

50%50% predicted probability of success on Hacker News, based on ML models trained on real launch data.

nativeThis product was originally launched on this platform.

TrustMRRLess likely to generate early MRR · Strong signals: ios, way · Missing: mobile apps, personal, entrepreneurs

43%43% predicted probability of success on TrustMRR, based on ML models trained on real launch data.

AppSumoMay struggle as an AppSumo deal · Missing: plus, platform, intuitive

25%25% predicted probability of success on AppSumo, based on ML models trained on real launch data.

Acquire.comPre-revenue stage for this audience · Strong signals: subscription, training · Missing: arr, mrr, revenue

18%18% predicted probability of success on Acquire.com, based on ML models trained on real launch data.

BetaListMay not resonate with beta-testers · Strong signals: audio · Missing: web3, chat, crypto

1%1% predicted probability of success on BetaList, based on ML models trained on real launch data.

Incorrect prediction on native model

Similar products

One Minute to Breathe29%Launch Intel prediction score: how likely this product is to succeed on its source platform, based on its name, tagline, and description.

An experiment in mindfulness through simple breathing.

Product Hunt+4

Goto: CLI for teleporting with your terminal51%Launch Intel prediction score: how likely this product is to succeed on its source platform, based on its name, tagline, and description.

Goto: CLI for teleporting with your terminal

Hacker News2

Ethereum Terminal CLI55%Launch Intel prediction score: how likely this product is to succeed on its source platform, based on its name, tagline, and description.

Ethereum Terminal CLI

Hacker News2

Get pinged when you are mouth breathing32%Launch Intel prediction score: how likely this product is to succeed on its source platform, based on its name, tagline, and description.

Get pinged when you are mouth breathing

Hacker News2

Breathe – Breathing exercises for focus and calm35%Launch Intel prediction score: how likely this product is to succeed on its source platform, based on its name, tagline, and description.

Breathe – Breathing exercises for focus and calm

Hacker News2

NBA CLI app – Basketball in your terminal27%Launch Intel prediction score: how likely this product is to succeed on its source platform, based on its name, tagline, and description.

NBA CLI app – Basketball in your terminal

Hacker News2

Kegelia45%Launch Intel prediction score: how likely this product is to succeed on its source platform, based on its name, tagline, and description.

Kegel exercise app, paced by a glowing jellyfish

Indie Hackers1b2c

Quick Snake – A fast-paced snake game for the terminal43%Launch Intel prediction score: how likely this product is to succeed on its source platform, based on its name, tagline, and description.

Quick Snake – A fast-paced snake game for the terminal

Hacker News5

Breathe62%Launch Intel prediction score: how likely this product is to succeed on its source platform, based on its name, tagline, and description.

Meditate, sleep, Breathe.

Indie Hackers2$50/mogrowth

Paced breathing exercises zone54%Launch Intel prediction score: how likely this product is to succeed on its source platform, based on its name, tagline, and description.

Make breathing habits with this simple breathing trainer app. This app offers various breathing techniques for relaxation & deep sleep.

TrustMRR24$364/moHealth & Fitness

Browse all products Analyze your launch