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The lab · Web app

Guess the Line

Live

A free NFL prediction game I built for my friends. Each week everyone picks the spread and total for every game. Closest to the number scores. No money involved.

Guess the Line sign-in screen on desktop, reading Your games. Any device.
Guess the Line home screen on a phone, showing week 10 picks locked in, a community rank of 1 of 10, and accuracy points.

What it does

  • Weekly picks for every game, with a deadline and reminders.
  • Standings and season history for each group.
  • Private games: create one, invite friends, settle disputes as commissioner.
  • A community feed for posts and comments.

What I built

  • Web app hosted on Cloudflare Pages.
  • Accounts and data in Supabase, with Google sign-in.
  • Game lines pulled in on a schedule, plus kickoff weather.
  • Browser push reminders before each deadline.
  • Light and dark themes.

Want something like this built?

Sign-in, a database, scheduled data and reminders are the same parts I use for client tools.

Talk to me about it