Genesis Billiards

Fri, 06 Nov 2026 00:00:00 +0000

A scoreboard app for Genesis Billiards, a pool hall in Loveland, Colorado. The phone sits on the rail and gets handed across the table all night, so the whole screen is the scoreboard: one half per player, a huge number on each, and a tap on a half to score.

At the table

Tap to score. Tap your half for a point, or +10 for a run. A games tally sits on the seam for races; hold it to reset.
Presets for 9-Ball, Rotation, One Pocket and Straight Pool (14.1), or a custom race.
A match timer that counts down, counts up or runs as a shot clock. The alarm rings through the silent switch and still goes off with the phone locked.
Undo and redo for every score, and a match history.
No confirmation dialogs. Destructive actions are hold-to-confirm, and there’s no first-run tutorial, since whoever picks the phone up in rack three didn’t install it.

Under the hood

Every score is an event in a ledger and the match is a pure fold over it, so undo is moving a cursor back and a finished match can’t be accidentally un-won.
The live match is saved to disk on every change. Reopen the app hours later and it picks up where you were, or asks whether to start over.
The screen stays awake while a match is live and sleeps when it ends, so nobody drains their phone in the parking lot.
Built on Windows; the iOS builds and App Store uploads run on Codemagic.

IOS on Anthony Snavely

Genesis Billiards

At the table

Under the hood