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Wireguard FPGA

https://github.com/chili-chips-ba/wireguard-fpga
267•hasheddan•5h ago•69 comments

Free Software Hasn't Won

https://dorotac.eu/posts/fosswon/
18•LorenDB•46m ago•12 comments

Edge AI for Beginners

https://github.com/microsoft/edgeai-for-beginners
50•bakigul•1h ago•13 comments

Ask HN: What are you working on? (October 2025)

54•david927•2h ago•101 comments

Emacs agent-shell (powered by ACP)

https://xenodium.com/introducing-agent-shell
68•Karrot_Kream•2h ago•5 comments

Completing a BASIC language interpreter in 2025

https://nanochess.org/ecs_basic_2.html
44•nanochess•3h ago•1 comments

MAML – a new configuration language (similar to JSON, YAML, and TOML)

https://maml.dev/
14•birdculture•1h ago•8 comments

Three ways formally verified code can go wrong in practice

https://buttondown.com/hillelwayne/archive/three-ways-formally-verified-code-can-go-wrong-in/
25•todsacerdoti•16h ago•10 comments

Macro Splats 2025

https://danybittel.ch/macro.html
353•danybittel•12h ago•58 comments

A whirlwind introduction to dataflow graphs (2018)

https://fgiesen.wordpress.com/2018/03/05/a-whirlwind-introduction-to-dataflow-graphs/
14•shoo•1d ago•0 comments

Tiny Teams Playbook

https://www.latent.space/p/tiny
41•tilt•4d ago•13 comments

Bird Photographer of the Year Gives a Lesson in Planning and Patience

https://www.thisiscolossal.com/2025/09/2025-bird-photographer-of-the-year-contest/
21•surprisetalk•6d ago•4 comments

Constraint satisfaction to optimize item selection for bundles in Minecraft

https://www.robw.fyi/2025/10/12/using-constraint-satisfaction-to-optimize-item-selection-for-bund...
11•someguy101010•4h ago•4 comments

A years-long Turkish alphabet bug in the Kotlin compiler

https://sam-cooper.medium.com/the-country-that-broke-kotlin-84bdd0afb237
43•Bogdanp•5h ago•44 comments

Rcyl – a recycled plastic urban bike

https://rcyl.bike/en/the-bike/
15•smartmic•3h ago•15 comments

Show HN: I built a simple ambient sound app with no ads or subscriptions

https://ambisounds.app/
64•alpaca121•7h ago•30 comments

AdapTive-LeArning Speculator System (ATLAS): Faster LLM inference

https://www.together.ai/blog/adaptive-learning-speculator-system-atlas
184•alecco•14h ago•43 comments

oavif: Faster target quality image compression

https://giannirosato.com/blog/post/oavif/
12•computerbuster•6h ago•2 comments

3D-Printed Automatic Weather Station

https://3dpaws.comet.ucar.edu
7•hyperbovine•3d ago•0 comments

Addictive-like behavioural traits in pet dogs with extreme motivation for toys

https://www.nature.com/articles/s41598-025-18636-0
128•wallflower•6h ago•84 comments

Schleswig-Holstein completes migration to open source email

https://news.itsfoss.com/schleswig-holstein-email-system-migration/
290•sebastian_z•7h ago•91 comments

Loko Scheme: bare metal optimizing Scheme compiler

https://scheme.fail/
143•dTal•5d ago•14 comments

How I'm using Helix editor

https://rushter.com/blog/helix-editor/
167•f311a•6h ago•49 comments

The neurons that let us see what isn't there

https://arstechnica.com/science/2025/10/the-neurons-that-let-us-see-what-isnt-there/
22•rbanffy•5d ago•1 comments

HP1345A (and wargames) (2017)

https://phk.freebsd.dk/hacks/Wargames/
25•rbanffy•3h ago•0 comments

Nostr and ATProto (2024)

https://shreyanjain.net/2024/07/05/nostr-and-atproto.html
111•sph•13h ago•56 comments

Meta Superintelligence Labs' first paper is about RAG

https://paddedinputs.substack.com/p/meta-superintelligences-surprising
389•skadamat•23h ago•219 comments

After the AI boom: what might we be left with?

https://blog.robbowley.net/2025/10/12/after-the-ai-boom-what-might-we-be-left-with/
78•imasl42•2h ago•214 comments

Ridley Scott's Prometheus and Alien: Covenant – Contemporary Horror of AI (2020)

https://www.ejumpcut.org/archive/jc58.2018/AlpertAlienPrequels/index.html
49•measurablefunc•5h ago•34 comments

The Flummoxagon

https://n-e-r-v-o-u-s.com/blog/?p=9827
106•robinhouston•5d ago•24 comments
Open in hackernews

Show HN: I built a simple ambient sound app with no ads or subscriptions

https://ambisounds.app/
63•alpaca121•7h ago
I’ve always liked having background noise while working or falling asleep, but I got frustrated that most “white noise” or ambient sound apps are either paywalled, stuffed with ads, or try to upsell subscriptions for basic features.

So I made Ambi, a small iOS app with a clean interface and a set of freely available ambient sounds — rain, waves, wind, birds, that sort of thing. You can mix them, adjust volume levels, and just let it play all night or while you work. Everything works offline and there are no hidden catches.

It’s something I built for myself first, but I figured others might find it useful too. Feedback, bugs, and suggestions are all welcome.

https://apps.apple.com/app/ambi-white-noise-sleep-sounds/id6...

Comments

monitron•3h ago
This is fantastic, thank you. Recently when trying to sleep away from home, I went looking for a noise app and was grossed out by the state of the available apps, just like you said.

BTW One unfortunate feature that many noise apps/websites have (including Apple Music's official noise buttons) is that after a few minutes, they fade out and back in or have some other jarring transition when repeating. This is far from ideal for sleep, meditation, etc. So this is an enhancement request, if your app doesn't already solve this ;)

I'm also curious: do you think that the cost of maintaining the app (keeping it up to date with newer iOS versions, for instance) will eventually dissuade you from keeping it available in its pristine state? I've wondered why there seem to be ZERO free apps by hobbyists on the App Store in categories like this...

alpaca121•32m ago
100% agree with you. Most of my time on this project actually went into making sure the loops play seamlessly—no gaps, glitches, or fades—since even the tiniest hiccup can throw off light sleepers. I’ve also tested the app across different headphones and speakers, with and without noise cancellation, but if you try it and notice anything off, please tell me. I’d really love to make it as smooth as possible.

For the app maintenance side, I’m intentionally keeping both the UI and backend super simple so updates are easy to manage. And honestly, I just enjoy iOS development, so even the maintenance part feels more like fun than work.

sudo712•3h ago
I love the idea, and thanks for doing this. I would like to create free apps too just for the heck of it but one of the biggest issues I find with creating free app store apps is that, regardless of whether you are charging money or not, you need to keep feeding Apple $100 per year, which is excruciating, especially for countries where the developer population is much higher and the income disparity is high. Since the Play Store only charges 25$ ish and one time, it is much more feasible to do it on the Play Store, hence the availability of such apps is more on Play Store.
jpablo•3h ago
The $100 is per year.
OptionOfT•2h ago
It is still disgusting. There is no need for that fee to be there, because remember, it sits on top of the purchase of at least $1,500 (a decent Mac).

I tried to see if I could make improvements to Immich. No can do, as half of their entitlements require a team account (and even then begging Apple to get the entitlements).

Now, they do offer a private account, so I spent time removing those entitlements. Guess what? Starting over 3 times and you're hit with a 'you can only sign 10 apps / week'.

Why do apps built for my iPhone, which I explicitly need to put in Developer mode, need to be signed by daddy Cook?

sudo712•2h ago
True. I completely forgot about that part. I absolutely love my windows PC, but I had to buy a mac so I can support cross platform
kiba•2h ago
Apple can charge you that because they have a platform which is a monopoly.

Granted, they did the work that built and maintain the platform, but at some point it's actually the countless developers who contribute value, not Apple.

sudo712•2h ago
yeah. sorry my brain was on auto pilot.
andy_ppp•2h ago
Wow this looks incredible! I quite like the Overcast model where you can optionally pay a little just to support the author rather than for extra features or nagware.
alpaca121•56m ago
That's a great suggestion. I haven't given much thought to monetization. And personally I really this to be freely available to all who need and enjoy it. But an optional payment option doesn't sound too bad.
mandeepj•2h ago
Just downloaded! Thanks for your efforts on it.

I was thinking of building something similar to the point of even learning music production, for the similar reasons you have listed. I think I can postpone my idea now.

I don’t think many people would mind watching once a day ad just to support your work. But, whatever makes you happy.

alpaca121•1h ago
Thanks for trying:) and its definitely a great way to develop a good ear for sounds and pickup basic audio engineering. i certainly got comfortable with audacity along the way
ssttoo•1h ago
Lovely! Couple questions…

- where did you get the noises, are they your own recordings?

- how hard it is to support earlier iOS? For folks like me who are on older phones that cannot be upgraded anymore (iOS 16 personally)

alpaca121•1h ago
- There are all curated from bunch of different online sources like pixabay that allow usage without any restrictions - Not too hard. I just need to test it thoroughly to make sure the experience is as good as the latest os
interloxia•51m ago
Not the author. I built one of these years ago and had fun finding and using sounds from radio aporee.

https://archive.org/details/radio-aporee-maps

https://aporee.org/maps/info/

mft_•1h ago
Thanks for this - de-installed an alternative and installed this.

Any thoughts of some sort of equalizer feature? I like brown noise for sleeping in noisy environments, and would love to be able to add a bit more bass to your sample. (Brown noise plus some Airplane is actually pretty good.)

---

Side thought - there needs to be a club (with a curated list?) for simple apps that work well, and commit to staying ad-free. I'd love to be able to search amongst such apps prior to auditioning options from the App Store. (I mean, it would be great to be able to filter for such apps in the App Store itself, but that's not going to happen.)

saaaaaam•1h ago
Downloaded this. It drowned out perfectly the noise from my upstairs neighbour sitting on her balcony watching YouTube videos above my open bedroom window. Thank you!
alpaca121•1h ago
:) glad its helpful!
caseyf7•1h ago
This is great. I’ve been looking for something like this for a long time after giving up on Portal. Thank you
tonyhart7•1h ago
ok what is Your TOMO llc mean???

does we really need to register LLC to upload into appstore???? that's seem excessive no? especially if your app isnt generating profit

alpaca121•55m ago
No you don't. You can submit an app as a solo developer. I formed the LLC for my design consultancy so just used the same for my Apple dev account.
finger•1h ago
For those unaware, iOS includes a limited selection of such sounds. You cant mix or anything, but it might be good enough, at least it is for me. Search for Background Sounds in settings.
orsenthil•57m ago
Thanks for making this avialable.

I am Linux (ZorinOS, FTW) and I use SoundScape https://github.com/ddanilov/soundscape

There is https://freesound.org/ which can provide a multitude of free sounds too.

FiddlerClamp•48m ago
I'm a longtime fan of Web-based myNoise: https://mynoise.net/
alpaca121•45m ago
some of the best sounds out there
thehamkercat•47m ago
Let's not forget https://neal.fun/ambient-chaos/
airstrike•34m ago
Volcano + Rain + Coffee Shop is my jam.
alpaca121•30m ago
cuuute!
rjdj377dhabsn•18m ago
Sounds like a convienet app, but is there any advantage to just looping an ambient sound clip in a generic audio player?
smokeydoe•11m ago
Not having to go find the ambient sound clips yourself.