Hardbound 3.0
Illustrated summaries of bestselling nonfiction books
In plain words
Hardbound 3.0 is an iOS app that provides illustrated summaries of bestselling nonfiction books across history, startups, and science. Users can quickly grasp key concepts and takeaways from popular titles through visual summaries rather than reading full texts. The app serves readers seeking efficient ways to engage with nonfiction content and learn from acclaimed works in condensed form.
written from the facts on this page · September 2026
More life & fun this month
the category →- TL
Life & fun · 10d ago · louisabraham.github.io
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Scroll through all 43,252,003,274,489,856,000 reachable Rubik's Cube permutations.
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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 · 26d ago · baselashraf81.github.io
Launched alongside, March 2017
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Startup School▲1,012A free online program to teach you how to start a company
Life & fun · 2017 · startupschool.org
