Curvature

What it does

Curvature generates a map highlighting the most twisty roads, all across the world. Curvature helps those who enjoy twisty roads (such as motorcycle or driving enthusiasts) find promising roads that may not be well known.

Find twisty roads.

• IE
  Interactively explore different map projections2017 · mjmdavis.com · ▲109
• 
  Flattest Route - A web app to help you avoid hills in SF2013 · flattestroute.com · ▲237
• RR
  Random Roads2020 · random-roads--edwardcunningh2.repl.co · ▲144
• RA
  RouteScout – A bike routing app that lets you love or hate hills2025 · ▲19

  Hi HN, I’m a high school student in Seattle who loves riding hills. I found that route makers like Google Maps get you from point A to B on a bike, but they don’t give you fun routes. So i made my own RouteScout lets you: - Control the surfaces (never gravel or dirt with a road bike!) on the route - Indicate your preference for hills (I LOVE or HATE hills gives you different routes) - Prefer routes with bike lanes and cycling paths and roads made for bikes. - Filter types of roads (big roads gone!) - And when looping around it won’t take you back on the same exact road on the way back…

• 
  DetourmapJul 2026 · detourmap.com · ▲148

  Every place worth the detour, on one interactive map

• 
  Curve Tracker for Motorbike2021 · apps.apple.com · ▲83

  Improve your cornering with sensors of your smartphone

• 
  SimCity, but with Permits▲928

  A free city-building game in your browser. You are the mayor. You know what the city needs. Now get it past the zoning board, the neighbors, the appeals court and the next election.

  Life & fun · 2d ago · permit.petercai.com

• IV
  I've been paying for a rural Tanzanian's education for 10 years▲778

  Life & fun · 14d ago · tanzaniaeducationproject.org

• 
  Bigwords.page – Turn any screen into a sign. The URL is the app▲728

  Turn a phone, tablet or TV into a sign. Type a message and it fills the screen: welcome signs, timers, Wi-Fi passwords and more. No app, no account, free.

  Life & fun · 15d ago · bigwords.page

• 
  Guitoro, a virtual guitar you strum with your keyboard▲573

  Play a free virtual guitar online with your keyboard or by touch. Slow songs down and see every chord, string and strum. Acoustic, classic, electric and bass.

  Life & fun · 9d ago · guitoro.com

• 
  See *almost* any carriers phone settings▲432

  Carrier settings from iPhone, Pixel and Galaxy firmware, decoded and compared: APNs, VoLTE, 5G and Wi-Fi Calling per carrier, and what each build changed.

  Life & fun · 13d ago · carrierexplode.com

• 
  The whole Solar System and every tracked satellite, live in the browser▲407

  Life & fun · 23d ago · space.bl2.net

• 
  Admin Portal (by WorkOS)▲1,408

  Pre-built wizard for configuring Single Sign-On (SSO/SAML)

  Dev tools · 2020 · workos.com

• 
  Sidekick Browser▲1,050

  A productivity browser for becoming focused and unstoppable

  Work · 2020 · perplexity.ai

• 
  PFPMaker▲1,027

  Create an awesome profile pic from any photo

  Growth · 2020 · pfpmaker.com

• 
  Screenity▲878

  The most powerful screen recorder for Chrome

  Dev tools · 2020 · chromewebstore.google.com

• 
  Notion Timeline▲778

  Plot all your projects chronologically

  Work · 2020 · notion.so

• 
  I Rebuilt MySpace from 2007▲726

  SpaceHey is a retro social network focused on privacy and customizability. It

  Life & fun · 2020 · spacehey.com