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 huge numbers of patients coming off ventilators and they are often given breathing exercises on a worksheet and disposable plastic devices called incentive spirometers to encourage deep breathing. This is intended to prevent chest infections and strengthen breathing muscles that have weakened. I noticed often the incentive spirometer would sit by the bedside, whilst the patient would be on their phone – this was the spark that lead to Lungy!

The visuals are mostly built using Metal, with one or two using SpriteKit. There are 20 to choose from, including boids, cloth sims, fluid sims, a hacky DLA implementation, rigid body + soft body sims. The audio uses AudioKit with a polyphonic synth and a sequencer plays generated notes from a chosen scale (you can mess around with the sequencer and synth in Settings/Create Music).

There are obviously lots of breathing and meditation apps out there, I wanted Lungy to be different - it's about tuning into your surroundings and noticing the world around you, so all the visuals are nature-inspired or have some reference to the physical world. I didn’t like other apps required large downloads and/or a wifi connection, so Lungy’s download size is very small (<50MB), with no geometry, video or audio files.

Lungy is initially a wellness app, but I’d like to develop a medical device version for patients with breathing problems such as asthma, chronic obstructive pulmonary disease (COPD) & long COVID. Thanks for reading - would love to hear feedback!

LUNGY.APP

lukko

652

208

OpenJourney: Midjourney, but Open Source

OPEN-JOURNEY.GITHUB.IO

walterbell

618

120

Tell HN: Whole Yandex Git repository leaked

Someone just published 40Gb+ of leaked Yandex GIT repository. Won’t provide magnet here, but it is top google result for “yandex leak” when filtered by last 24h.

Affected services:

aapi.tar.bz2 admins.tar.bz2 ads.tar.bz2 alice.tar.bz2 analytics.tar.bz2 antiadblock.tar.bz2 antirobot.tar.bz2 autocheck.tar.bz2 balancer.tar.bz2 billing.tar.bz2 bindings.tar.bz2 captcha.tar.bz2 cdn.tar.bz2 certs.tar.bz2 ci.tar.bz2 classifieds.tar.bz2 client_analytics.tar.bz2 client_method.tar.bz2 cloud.tar.bz2 commerce.tar.bz2 connect.tar.bz2 crm.tar.bz2 crypta.tar.bz2 customer_service.tar.bz2 datacloud.tar.bz2 delivery.tar.bz2 direct.tar.bz2 disk.tar.bz2 docs.tar.bz2 drive.tar.bz2 extsearch.tar.bz2 fuzzing.tar.bz2 gencfg.tar.bz2 groups.tar.bz2 helpdesk.tar.bz2 infra.tar.bz2 intranet.tar.bz2 investors.tar.bz2 it-office.tar.bz2 jupytercloud.tar.bz2 kernel.tar.bz2 library.tar.bz2 load.tar.bz2 mail.tar.bz2 maps.tar.bz2 maps_2.tar.bz2 maps_adv.tar.bz2 market.tar.bz2 metrika.tar.bz2 mobile-WARNING-notfull.tar.bz2 nginx.tar.bz2 noc.tar.bz2 partner.tar.bz2 passport.tar.bz2 pay.tar.bz2 payplatform.tar.bz2 paysys.tar.bz2 portal.tar.bz2 robot.tar.bz2 rt-research.tar.bz2 saas.tar.bz2 sandbox.tar.bz2 search.tar.bz2 security.tar.bz2 skynet.tar.bz2 smart_devices.tar.bz2 smarttv.tar.bz2 solomon.tar.bz2 stocks.tar.bz2 tasklet.tar.bz2 taxi.tar.bz2 tools.tar.bz2 travel.tar.bz2 wmconsole.tar.bz2 yandex_io.tar.bz2 yandex360.tar.bz2 yaphone.tar.bz2 yawe.tar.bz2 frontend.tar.bz2

coolspot

587

331

Broider: Pixel Art CSS Borders

MAXBITTKER.GITHUB.IO

thesephist

532

Erlang's not about lightweight processes and message passing

An AI lawyer was set to argue in court – real lawyers shut it down

I almost bought a scanner

Ask HN: What would be your stack if you are building an MVP today?

Specifically the backend. I'd love to hear your reasons. Do you keep one eye on what the stack would be post MVP?

1. Old schoolish (VPS - Maybe DO, Django/Flask/Rails/Remix/Next with postgres)

2. Supabase etc with JS/TS on either side of the network

3. Lambda/Cloud functions with Firebase/Dyanamo DB/Cosmos DB etc

4..n. What else and why?

nvln

428

696

The audacity of Apple Podcasts

Apple: The only big tech giant going against the job cuts tide

BLOG.PRAGMATICENGINEER.COM

cpeterso

394

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Ask HN: Why Is Everything Declining?

Is anyone else noticing that for several 5 year blocks (pentad) the world just seems to get markedly worse? It's like no body seems to give a shit about anyone except themselves anymore. Whats the cause of this? What's the solution?

A bunch of things I've noticed:

* Landlords seem extremely greedy and do terrible rent seeking tactics like fees upon fees (250 admin fee to rent here, $75 to apply, $300 non refundable pet deposit, $25 a month pet rent, $12.50 community fee, $15 trash valet, $5 online payment fee, $100 a month community internet (for the $50 a month package), going Month to month after a lease ends is 2x the annual price. And then they use RealPage to collude to make prices higher[1]

* People are noisy as fuck and dont seem to give a shit. Seems like every night there's someone with loud as exhaust on "sportish" car ripping around the neihborhood. For months this guy would start up his loud car at 7am and no one care when I complained.

* General worker apathy is endemic everywhere I go people seem aggravated I would dare to check my order and point out they didn't put in the ketchup i asked for, or the napkins, or whatever. Or when I dine in the tables are dirty. Or the gym is filthy, the cleaner just drags the mop around looking busy but accomplishing nothing. But in many instances they keep asking for more tips.

* Software seems to be overrun by a mentality that any future cost is worth it to save even 1 minute of development time today. And this one I think I've observed the root, it seems that people get promoted away from their problems so they're not the ones to solve them. And those who do write good software (albeit slightly slower) are not promotable beacuse they're "under performing" their peers. Why does it seem management (and many thusly incentivized engineers) have abandoned decades of experience showing how to create reliable, robust, reusable code that is both great the customer, fast to iterate on, and only a tiny tiny bit slower to write.

* Seems like everything is subscription model and you have to pay N times to access something thats only worth 1-3x . Eg: I Netflix for a couple hours a month. At the price for 4k access I can almost go out to a theatre. Video games are all trending to subscription models. I just learned the other day that the PS4 games I got with my subcription to PSN all are locked because I stopped subscribing (nearly 50 games) . So I paid them like $125 for access to these games for 24 months, and now I cannot play any of them? At least I still own NES/SNES/N64 Game cartridges that will never lock me out.

* Police seem to not give a shit anymore. I've noticed what seems to be total lawlessness going on in my world. Folks stealing shit. People driving absurdly dangerously in cars that are not designed to travel like that. (tailgating, lane switch, accelerating at the fastest I've ever seen a beat up Sentra do...) . I never see cops hit lights and sirens at them. And every year our taxes (their paycheck) and our insurance goes up (a consequence of poor driving habits). And at the same time, we get these cases where a dude like Tyre, at least as I see the body cam, seems to be basically complying and the police freak out on him, he basically complies, and they taze and pepper spay him, no wonder he ran away -- what is someone supposed to think when they say "on the ground" and you get on the ground and then just keep getting more and more aggressive. Like are you gonna just lay on your face while they potentially pull their gun and just shoot you in the back of the head? How do you know what's going on unless you can face and see them? How can you trust they wont, cause even if it's 99.999999% they wont, you only get 1 one chance and if you get it wrong you're dead without any coming back.

* Over and over again we keep hearing stories of fake people becoming the top paid, respected, or otherwise status people in society. Elizabeth Holmes, Frank/JP Morgan scam for $175M[2], fraudulent crypto schemes

* And there's a ton of little things too like the water is poison, the air is poison, the food system is poison or crashing etc.

I'm aware of pinker's general argument that many numbers are getting better. But it seems like people just treat eachother like shit these days.

Anyone else have other examples? I am I way off base here?

[1]: https://www.theverge.com/2022/11/26/23479034/doj-investigating-rent-setting-software-company-realpage

[2]: https://www.nytimes.com/2023/01/21/business/jpmorgan-chase-charlie-javice-fraud.html