Intro to Flat-track Roller Derby app for iPhone and iPad

4.1 ( 1691 ratings )

Sports Reference
Developer: Germaine Koh

Free

Current version: 2.1, last update: 7 years ago
First release : 13 May 2010
App size: 13.48 Mb

An introduction to the fast-moving sport of flat-track roller derby, including a video demo, explanations of rules and referee hand signals, a FAQ, and a new strategy section. Updated with 2013 rule and hand signal changes. This app was designed and written by an active rollergirl.