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Systematically Improving Espresso: Mathematical Modeling and Experiment

https://www.cell.com/matter/fulltext/S2590-2385(19)30410-2
1•austinallegro•19s ago•0 comments

Proving Liveness with TLA

https://roscidus.com/blog/blog/2026/01/01/tla-liveness/
1•todsacerdoti•32s ago•0 comments

Roger Federer's masterful commencement speech

https://www.nytimes.com/athletic/6414410/2025/06/10/roger-federer-viral-commencement-speech/
1•andsoitis•3m ago•0 comments

Show HN: Startboard – A simple little browser start page and bookmarks organizer

https://startboard.so/
1•SunshineTheCat•5m ago•0 comments

Exploiting Silent Delivery Receipts to Monitor Mobile Instant Messengers

https://arxiv.org/abs/2411.11194
1•speckx•6m ago•0 comments

How microservice architectures have shaped the usage of database technologies

https://www.datadoghq.com/blog/datadog-database-research/
1•dujuku•7m ago•0 comments

Anything: Import anything into Python (generated by LLM)

https://github.com/PetterS/anything
2•petters•7m ago•0 comments

Punkt. Unveils MC03 Smartphone

https://www.punkt.ch/blogs/news/punkt-unveils-mc03
3•ChrisArchitect•8m ago•0 comments

Show HN: Headup.nvim` – Update file header metadata in Neovim

https://github.com/Fro-Q/headup.nvim
1•froQ•11m ago•0 comments

Would you use this LLM routing tool?

https://github.com/Jity01/basis-2
1•rookonfire•11m ago•1 comments

Git analytics that works across GitHub, GitLab, and Bitbucket

1•akhnid•14m ago•2 comments

Minimal phone pioneer Punkt is back with a new privacy-focused model at CES

https://www.engadget.com/mobile/smartphones/minimal-phone-pioneer-punkt-is-back-with-a-new-privac...
2•_____k•15m ago•2 comments

280M e-bikes are slashing oil demand far more than electric vehicles

https://arstechnica.com/cars/2023/11/280-million-e-bikes-are-slashing-oil-demand-far-more-than-el...
3•robtherobber•16m ago•1 comments

Upcoming removal of Chrome's One-6962-log policy

https://groups.google.com/a/chromium.org/g/ct-policy/c/IXPT4r1CPdE
2•speckx•18m ago•0 comments

How Nokia went from iPhone victim to $1B Nvidia deal

https://www.ft.com/content/0a07cbc3-dac4-4b89-9f26-038deb833060
2•thm•19m ago•1 comments

Testing the Mono Gateway: custom-built 10 Gbps Router

https://www.jeffgeerling.com/blog/2026/testing-mono-gateway-custom-built-10-gbps-router
1•ingve•20m ago•1 comments

Prompt-only theorem proving with adversarial LLM agents

https://tjoresearchnotes.wordpress.com/2026/01/02/the-adversarial-prover-a-skeptics-approach-to-l...
1•justanotherprof•22m ago•0 comments

We need to talk about Claude's 'soul' document

https://nimishg.substack.com/p/we-need-to-talk-about-claudes-soul
1•i_dont_know_•23m ago•1 comments

Punkt's German-made MC03 smartphone comes to the US this spring

https://www.theverge.com/tech/849740/punkt-mc03-secure-smartphone-made-in-germany
1•nateb2022•23m ago•1 comments

I turned my SaaS blog into a programmable growth engine (70 pages, no ads)

https://www.google.com/search?q=site%3Ablog.vect.pro&sca_esv=3235e08c292698b8&biw=1536&bih=730&sx...
1•MMAFRAZ•24m ago•0 comments

Os.ninja – The Smartest Way to Explore Open Source

https://os.ninja/
2•devtendo•24m ago•0 comments

In Minnesota, a plan for a $4B data center takes root with renewables projects

https://techxplore.com/news/2025-11-minnesota-farm-country-billion-center.html
1•PaulHoule•24m ago•0 comments

US battery autonomy will upend EV hierarchy

https://www.reuters.com/commentary/breakingviews/us-battery-autonomy-will-upend-ev-hierarchy-2026...
1•alephnerd•26m ago•0 comments

Supervising the Idea Factory: My Year of 60 Personal Projects

https://mostlymaths.net/2026/01/2025-projects.html/
2•articsputnik•26m ago•0 comments

Recovering Data From A Corrupt tar Archive (2018)

https://stosb.com/blog/recovering-data-from-a-corrupt-tar-archive/
1•tasn•27m ago•0 comments

Reduced pricing for GitHub-hosted runners usage

https://github.blog/changelog/2026-01-01-reduced-pricing-for-github-hosted-runners-usage/
1•nateb2022•27m ago•1 comments

Grok is enabling mass sexual harassment on Twitter

https://www.seangoedecke.com/grok-deepfakes/
8•savanaly•29m ago•1 comments

Over 10K Fortinet firewalls exposed to actively exploited 2FA bypass

https://www.bleepingcomputer.com/news/security/over-10-000-fortinet-firewalls-exposed-to-ongoing-...
1•fleahunter•29m ago•0 comments

2026 Open Inquiries

https://fakepixels.substack.com/p/2026-open-inquiries
1•jger15•30m ago•0 comments

Tokamak experiments exceed plasma density limit

https://phys.org/news/2025-12-tokamak-exceed-plasma-density-limit.html
3•leopoldj•30m ago•0 comments
Open in hackernews

Show HN: I built a countdown app because system alarms gave my friend anxiety

https://apps.apple.com/us/app/duepal-visual-countdown-timer/id6756181712
1•elevenapril•2h ago

Comments

elevenapril•1h ago
Hey HN,

I built this app for a friend who has ADHD.

The backstory: She was struggling to stick to her daily routine, so I asked her, "Why don't you just use the system alarms?"

Her reaction was immediate: "Don't talk to me about system alarms."

She explained that alarms are too startling and stressful. She doesn't want a loud noise screaming at her; she just needs to know how much time is left until her next task (e.g., "15 mins until stand-up") without doing mental math every time she looks at the clock.

What I built:

Since I couldn't find an existing app that did exactly this (simple, non-intrusive, strictly visual), I built DuePal.

It does one thing: It puts a live countdown to your set "points in time" (9:00, 12:00, 17:00) right on the Dynamic Island and Lock Screen.

It creates "passive awareness" of time passing.

No startling sounds, just a visual nudge.

It handles repeating schedules (because setting timers manually every day is a pain).

It's a tiny utility, but it stopped my friend from being late without spiking her cortisol levels. I thought others here might find it useful too.

Happy to answer any questions about the Live Activities implementation!

delichon•1h ago
That passive awareness of time passing would require me to look at the phone frequently, which I prefer to avoid. A gentle chime when the alarm is approaching would be better. I'd rather have something that fixes the overly alarming system alarm, e.g. by letting me select the audio file and starting it quiet and gentle. That would also be useful across apps, including oodles of timers and time boxers. But I don't know if phone OSes allow this kind of customization.
elevenapril•1h ago
I hear you. It sounds like you have a good internal clock! For people with severe time blindness (like the friend I built this for), the problem is the opposite: time disappears completely. If she doesn't look, she assumes she has hours left when she only has minutes. The visual countdown acts as a prosthetic for that missing sense of time. But yes, if you don't struggle with that specific issue, checking the phone would definitely be annoying. A custom fade-in alarm sounds like a great idea for a different app.
delichon•1h ago
I do have that problem, which is why I appreciate the warning chimes of my Pomodoro app. But I prefer my warnings to be in the audio mode, especially because I don't have to remember to pick up the phone to see what I'm forgetting.
elevenapril•1h ago
It’s funny how different brains work. For her, any sound feels like an interruption or a 'demand' from the phone. She prefers the visual cue because it lets her check the time on her terms, rather than the phone interrupting her flow. But you're right—for 'eyes-free' awareness, you really can't beat audio.