I'm a doctor and made a responsive breathing app for stress and anxiety
Hey HN! Some more info: I’m an NHS doctor and the founder of Pi-A (https://www.pi-a.io) which developed Lungy (https://www.lungy.app). Lungy is an app (iOS only for now) that responds to breathing in real-time and was designed to make breathing exercises more engaging and beneficial to do. It hopefully has many aspects of interest to the HN community – real-time fluid, cloth and soft body sims running on the phone’s GPU. My background is as a junior surgical trainee and I started building Lungy in 2020 during the first COVID lockdown in London. During COVID, there were…
I'm a doctor and made a responsive breathing app for stress and anxiety launched on January 26, 2023 with 666 votes, #4 of 3,901 launches that month and more than 99% of that year's launches. The site was still online in September 2026, 3 years on.
In plain words
Lungy is an iOS app that guides breathing exercises through real-time responsive animations. Developed by an NHS doctor, it uses GPU-accelerated simulations of fluid, cloth, and soft body physics to make breathing exercises more engaging. The app was designed to help users manage stress and anxiety while providing the kind of structured breathing practice traditionally delivered through worksheets and medical devices. It targets anyone seeking interactive breathing exercises with a technical approach to visualization.
written from the facts on this page · September 2026
From the sources
Lungy recognises and responds to every breath. Developed by doctors to reduce stress & anxiety - download free today!
"Using the recovery mode, the visuals allowed me to be distracted from the attack, yet, still able to focus on the breathing. After 3-4 breaths, I was relieved." "I had an asthma attack when talking to my boyfriend on phone. At that time, I was not able to find my inhaler, so I chose Lungy. Using the recovery mode, the visuals allowed me to be distracted from the attack, yet, still able to focus on the breathing. After 3-4 breaths, I was relieved." "Using the recovery mode, the visuals allowed me to be distracted from my breathlessness, yet, still able to focus on my breathing. After 3-4 breaths, I was relieved." this app is honestly one of the most beautiful breathing apps I’ve ever come…from lungy.app
In the maker’s words, at launch
Hey HN! Some more info: I’m an NHS doctor and the founder of Pi-A (https://www.pi-a.io) which developed Lungy (https://www.lungy.app). Lungy is an app (iOS only for now) that responds to breathing in real-time and was designed to make breathing exercises more engaging and beneficial to do. It…
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I'm a doctor and built a responsive breathing app for anxiety and sleep2025 · apps.apple.com · ▲103Hey HN! I’m an NHS doctor and the founder of Pia (https://www.piahealth.co) which developed Lungy (https://www.lungy.app). Lungy is an iOS app that responds to breathing in real-time and was designed to make breathing exercises more engaging and beneficial to do. It’s been two years since Lungy launched (here’s the original ShowHN: https://news.ycombinator.com/item?id=34534615) and it's had a huge update and complete redesign. We rebuilt the whole app, and added a real-time 3D soft body solver which gives some really cool interactions like blobs /…
I built an interactive cloth solver for Apple Vision Pro2024 · youtube.com · ▲99A bit more context - the cloth sim is part of my app, Lungy (https://www.lungy.app). It's designed to be an active meditation / relaxation app, so you can play relaxing instruments in space and immersive breathing exercises. The original Lungy is a breathing app available for iOS, that uses real-time breathing with interactive visuals. The cloth sim is a Verlet integration, running on a regular grid. For now, I have tried a couple of different cloth scenes - a sort of touch reactive 'pad', where different parts of the cloth are mapped to different sounds and a cloth that blows…
I'm a doctor and made a breathing app for stress and anxiety- Lungy 2.02024 · apps.apple.com · ▲6Download Lungy: Breathing & Anxiety by Pi-A on the App Store. See screenshots, ratings and reviews, user tips, and more apps like Lungy: Breathing & Anxiety.
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