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Show HN: SitzProbe.app – Spaced Repetition for Performances and Complex Tasks

https://sitzprobe.app/
1•jtanderson•6h ago
Hi HN! I’m super excited to share with you my first completely self-developed app: SitzProbe[1].

This is an application that came from a simple (yet unfilled) need I had. When sitting down to practice music, I had trouble keeping track of all the different pieces I knew and which ones I have or haven’t played recently. But I wanted to make sure I kept practicing the old ones mixed in with the new, so ended up with a mess of lists and notes on my phone.

I’ve also always been fascinated by the theories of spaced repetition[2], but they’ve always been geared toward very atomic bits of learning (languages, technical vocabulary, etc.).

So I decided to combine the two into a slightly fancier todo list: one where your tasks will never be “done”, but if you do them well, you do them less often; and if you don’t do so well, it will prompt you to repeat them more often until you do them better. As far as I could find, this sort of thing wasn’t available, so I made one.

Any feedback, comments, critiques, are appreciated. There are certainly bits of the app that aren’t finished (what software is ever complete?) but would also love suggestions on extra things I might consider adding in the future.

[1]: https://sitzprobe.app/ [2]: https://en.wikipedia.org/wiki/Spaced_repetition

Harvard Is Said to Be Open to Spending Up to $500M. To Resolve Trump Dispute

https://www.nytimes.com/2025/07/28/us/politics/trump-harvard-payment.html
1•neverrroot•49s ago•0 comments

The DNA Protection Company (Alan Tomusiak, Ep #4) [podcast]

https://www.owlposting.com/p/the-dna-protection-company-alan-tomusiak
1•crescit_eundo•3m ago•0 comments

Show HN: I Built "Vercel for Stateful AI Agents" – open-source, cost-efficient

https://github.com/oso95/Agentainer-lab
1•cyw•6m ago•0 comments

GitHub Having Several Issues

https://github.com/orgs/github/repositories
1•markuta•6m ago•0 comments

Dalí's creative dream: Scientific evidence demonstrates the power of micro-naps

https://english.elpais.com/culture/2025-07-27/dalis-creative-dream-scientific-evidence-demonstrates-the-power-of-micro-naps.html
1•diggan•7m ago•0 comments

Can Computers and Phones combine? A tale of Psion (1998) [video]

https://www.youtube.com/watch?v=EuF65Ohn51M
1•xqcgrek2•9m ago•0 comments

Nvidia's Jensen Huang Persuaded the President to Sell A.I. Chips to China

https://www.nytimes.com/2025/07/17/technology/nvidia-trump-ai-chips-china.html
1•ViktorRay•12m ago•0 comments

AI reshapes the craft of software engineering, with Yoav Tzfati

https://www.complexsystemspodcast.com/episodes/how-ai-reshapes-software-engineering/
1•nsm•12m ago•0 comments

Tom Lehrer satirized the national security state from the inside

https://reason.com/2025/07/28/tom-lehrer-satirized-the-national-security-state-from-the-inside/
1•leephillips•16m ago•0 comments

Lessons from building KPI systems for 20 startups

https://medium.com/@khalilliouane/i-built-kpis-for-20-startups-and-still-nearly-lost-my-mind-883a186fd1a6
1•liouanos•19m ago•0 comments

5‑Minute Postgres Performance Checkup

https://medium.com/@rohansodha10/you-must-do-this-5-minute-postgres-performance-checkup-%EF%B8%8F-8f14cd867bbb
1•fs_software•20m ago•0 comments

Tehran Is at Risk of Running Out of Water Within Weeks

https://www.nytimes.com/2025/07/26/world/middleeast/iran-water-crisis-drought.html
2•bookofjoe•22m ago•1 comments

Show HN: FastLaunchAPI – A production-ready FastAPI template batteries included

https://fastlaunchapi.dev/
1•niklasdev•22m ago•0 comments

Hyprland Compositor Launches Subscription Service for Premium Desktop Experience

https://www.phoronix.com/news/Hyprland-Hyprperks
1•LorenDB•28m ago•1 comments

Engineer Pleads Guilty to Stealing for Chinese Government Trade Secret Tech

https://www.justice.gov/opa/pr/engineer-pleads-guilty-stealing-chinese-governments-benefit-trade-secret-technology-designed
2•737min•29m ago•0 comments

Invictus – Europe's new hypersonic test platform

https://www.esa.int/Enabling_Support/Space_Engineering_Technology/Shaping_the_Future/INVICTUS_Europe_s_new_hypersonic_test_platform
3•rbanffy•29m ago•0 comments

Unlimited Is a Ponzi Scheme

https://staysaasy.com/product/2020/12/12/unlimitted.html
2•thisismytest•29m ago•0 comments

Say goodbye to your custom ROMs as One UI 8 kills bootloader unlock

https://www.sammobile.com/news/say-goodbye-to-your-custom-roms-as-one-ui-8-kills-bootloader-unlock/
3•airhangerf15•29m ago•0 comments

Landing Pages for Early-Stage Startups

https://www.gonsanchezs.com/landing-pages
1•airstrike•31m ago•0 comments

Electrosynthesis of Methanol from CO2 over Cu/Cu2P2O7 via the Formate Pathway

https://advanced.onlinelibrary.wiley.com/doi/10.1002/adma.202501021
1•PaulHoule•34m ago•0 comments

OpenAI's ChatGPT Agent casually clicks through "I am not a robot" verification

https://arstechnica.com/information-technology/2025/07/openais-chatgpt-agent-casually-clicks-through-i-am-not-a-robot-verification-test/
3•joak•35m ago•0 comments

Michigan "swamp gas" UFO reports

https://en.wikipedia.org/wiki/Michigan_%22swamp_gas%22_UFO_reports
3•handfuloflight•36m ago•0 comments

The one, big unanswered question about Ozempic

https://www.vox.com/the-highlight/420418/ozempic-glp-1-drugs-pill-forms-science
3•paulpauper•37m ago•0 comments

New Tool Measures Child Care Regulation and Cost in the U.S.

https://ifstudies.org/blog/new-tool-measures-child-care-regulation-and-cost-in-the-us
1•paulpauper•38m ago•1 comments

Pinokio – Local AI App store, one-click installs of AI apps

https://pinokio.co/
1•mickelsen•38m ago•0 comments

The Rising Cost of Childcare

https://www.npr.org/2025/03/20/1239646560/the-rising-cost-of-childcare
1•paulpauper•38m ago•0 comments

AI kills for the first time. Leak shows why "we are near the end" – Hinton [video]

https://www.youtube.com/watch?v=BcQb_8hmxSI
3•dp-hackernews•38m ago•0 comments

We built the security layer MCP always needed

https://blog.trailofbits.com/2025/07/28/we-built-the-security-layer-mcp-always-needed/
2•wslh•44m ago•0 comments

AI Winter

https://en.wikipedia.org/wiki/AI_winter
3•rossdavidh•45m ago•2 comments

Witsy – Desktop AI assistant / universal MCP client

https://github.com/nbonamy/witsy
2•mickelsen•49m ago•0 comments