Flaska vs Penalty Timer

A scuba tank calculator utility app -- calculates rock bottom air requirements, gas time, and transfills for various tank sizes.

The Most Reliable Penalty Timer for Roller Derby Officials Finally, a penalty timer built specifically for roller derby that actually works when you need it most. Whether you're a referee managing a chaotic jam or a coach running practice with limited staff, PenaltyTimer delivers precision timing with built-in WFTDA knowledge. - WFTDA COMPLIANT & RULE-SMART All penalty codes built-in (BC, FE, HB, LB, MP, IC, II, IP) Automatic 30-second durations with double-penalty support Handles tricky jammer situations according to official rules 10-second warning alerts - never miss telling skaters to stand - BUILT FOR REAL DERBY CONDITIONS Works 100% offline - no wifi crashes during crucial moments Lightning-fast tap-edit for quick time adjustments Stop ALL timers simultaneously between jams with one tap Customizable team colors to match any bout setup - FLEXIBLE FOR ANY SITUATION Two Blockers: Perfect for scrimmage or short-staffed practice Two Jammers: Ideal for jammer-focused drills Four Blockers: Standard penalty box management Full Penalty Box: Complete 6-skater capacity for regulation bouts - DESIGNED BY DERBY PEOPLE, FOR DERBY PEOPLE Unlike generic stopwatch apps that fail under pressure, PenaltyTimer was designed specifically for the unique needs of roller derby officials. Every feature solves a real problem we've all experienced. - KEY FEATURES: Reliable timing that won't crash mid-jam Visual and vibration warnings at 10 seconds One-touch penalty serving and timer management Team color customization for easy identification Penalty history tracking for post-bout analysis No accounts, no ads, no internet required - PERFECT FOR: WFTDA/MRDA certified referees Coaches running practice sessions League training officials NSOs managing penalty tracking Anyone tired of unreliable timing apps - ZERO HASSLE SETUP Download, open, and start timing penalties immediately. No registration, no cloud sync, no complicated setup. Just reliable derby timing when you need it. - BATTLE-TESTED RELIABILITY Built to handle the intensity of roller derby. No more app crashes during power jams, no more lost penalty times, no more fumbling with complex interfaces while trying to manage the box. Stop fighting with inadequate timing tools. Get the penalty timer that understands roller derby as well as you do. Perfect for WFTDA, MRDA, JRDA, and recreational leagues worldwide.