Planterra - your plant care consultant

What it does

Planterra maps every window in your home so plant recommendations, watering schedules, and Doctor consultations are grounded in your specific rooms and each plant's care history. Not generic care sheets. iOS, free, 7-day Pro trial. Built solo in Munich.

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  Plant Care2022 · ▲141

  Plant care instructions, identify plants, water reminders

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  Plantr2019 · ▲81

  Reminders to water your plants

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  Potted2018 · ▲244

  Never forget to water your plants again.

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  Planty2018 · ▲155

  Keep track of your plants and remember to water them

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  Herba2023 · ▲104

  An autonomous plant care system 🌱🤖

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  Planta2021 · ▲104

  The smart farm consultant at your finger tips

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  The load-bearing vocabulary of Claude▲703

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  Photosynthesis fires two of your iPhone

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  Take control of hair pulling, nail biting & skin picking

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  Scroll through all 43252003274489856000 Rubik's Cube states▲295

  Scroll through all 43,252,003,274,489,856,000 reachable Rubik's Cube permutations.

  Life & fun · 26d ago · everycube.alen.is

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  Expeditione▲265

  The Interactive 3D Encyclopedia

  Life & fun · 21d ago · expeditione.fun

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  Eigendrum - Draw any shape and hear what it sounds like as a drum▲243

  Hi HN, I built Eigendrum, a web tool that solves the 2D wave equation for arbitrary shapes so you can hear what they sound like as drums. How it works: * Solves -∇²u = λu using finite element analysis (Kφ = λMφ) on a triangle mesh. * Validated to <0.1% error against closed-form solutions for circles (Bessel zeros) and rectangles. * Sound model factors in strike location, Rayleigh damping, and mallet width. * Includes Kac drums I & II to demonstrate identical sound spectra from different geometries. * No frameworks, build steps, or dependencies. Repo and tests:…

  Life & fun · 27d ago · baselashraf81.github.io

• TL
  The load-bearing vocabulary of Claude▲703

  Life & fun · 10d ago · louisabraham.github.io

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  Hey Noah▲641

  A proactive AI executive assistant for founders

  AI · Aug 2026 · heynoah.io

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  Clipto MCP▲640

  Let agents source clips from terabytes of your local video

  Work · 18d ago · clipto.com

• SA
  Simple algorithm and color space to generate diverse skin tones▲627

  Hello HN! I found that picking out plausible but diverse skin tones for my digital art and game development projects was kind of difficult, and I got curious about if there was a way to define a color space that made it easy. I've built a color picker and procedural generation algorithm based on the space as well as a bunch of other fun js features and demos throughout the page that use the equations. If you find it interesting, I have lots of explanations of how I built it and what properties the space has. The methodology might be a bit shaky, but hopefully the result is as helpful for…

  Life & fun · Aug 2026 · toneyalexander.github.io

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  AdAnt AI▲608

  Claude for viral, high-converting social ads

  AI · Aug 2026 · adant.ai

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  I trained a 125M model to autocomplete piano on-device▲598

  I trained a 125M-parameter transformer to autocomplete piano performances in real time (~108 notes&#x2F;sec on an iPhone 15). The idea is basically GitHub Copilot or Tabnine, except instead of prompting it with code, you prompt it by playing a few notes on a MIDI piano. The model then continues what you played, entirely on-device. The app is free if anyone wants to try it. Happy to answer questions about the model, training, Core ML, or the many things that didn't work.

  AI · 17d ago · simedw.com