Leg It! vs Impulse

Leg It! — GPS Sprint Tracker, Speed Competitions & Coach Platform How fast can you actually run? Leg It! gives you a real answer. GPS-powered sprint tracking measures your exact speed in real time — then gives you everything you need to go faster. Here's what's inside: • Sprint from your wrist — the Leg It! Apple Watch app tracks your real GPS speed completely phone-free. Run a free sprint, take on a circuit, compete in a tournament, accept a duel, or join a relay — all from your watch, without ever touching your phone. • Know your speed — sprint tracking captures your exact pace in real time. No guessing, no estimates. Just your actual numbers, every run. • Run circuits — structured multi-sprint sessions with built-in rest timers. Track peak speed, average pace, and fade — then compare every session to your last so you can see yourself getting faster. Available on both iPhone and Apple Watch. • Get coached after every run — your AI coach analyzes each sprint and delivers personalized feedback on what's working and what to fix. Like having a coach in your pocket, every single run. • See your health impact — every sprint shows up on an anatomical body map tracking gains across cardio fitness, bone strength, fat burning, mental clarity, and muscle power. Watch your Health Score climb as training adds up. • Compete every week — weekly tournaments, 1v1 duels, relay races, school leaderboards, and a 33-animal speed challenge give you something to run for every single day. Challenge friends to duels and join relay teams directly from your Apple Watch. • Earn your tier — your PR speed earns you a tier from Rookie to Legend. Sprint consistently to master each level and unlock bonus XP rewards. • Earn bolts, unlock rewards — every sprint earns bolts you can spend in the Bolt Store. Customize your experience with animated speed trail skins, profile frames, badges, and full app themes. Collect rare Animal Card Packs — each pack contains 3 serialized collectible cards across Silver, Gold, Legendary, and Black rarity tiers. Pro subscribers earn 1.5x bolts on every sprint and receive a free Mystery Pack every Monday. • Invite friends, earn together — share your personal referral link and you both earn 250 bolts when your friend completes their first sprint. Find it on your profile under Invite Friends. • Train with a program — six science-backed training programs take you from beginner acceleration to max velocity, with a day-by-day plan to follow, track, and complete. • Coach your athletes — stop chasing athletes for updates. Leg It! gives speed coaches a full platform to see every athlete's sprint data as it happens, track detailed progress analytics across your roster, schedule sessions, and assign both training programs and individual drills — all from one dashboard. Share one invite link and your team is in. No spreadsheets. No group chats. No guesswork. Privacy Policy: https://thelegitapp.run/privacy Terms of Use: https://thelegitapp.run/terms

Your first three steps determine your acceleration. Impulse tells you exactly what's happening in each one. Film your sprint in slow motion and Impulse automatically extracts the mechanics that matter: shin angle at ground contact, ground contact time, and flight time across each step. No lab equipment. No sensors. Just your iPhone. The same data that previously required a university motion capture lab is now in your pocket. THE SCIENCE When your shin is vertical at ground contact, force drives straight down — pushing you up, not forward. A forward shin angle redirects that force vector backward, converting it into horizontal velocity. Shin angle is the single biggest mechanical determinant of how fast you accelerate off the line. WHO IT'S FOR Sprinters, football players, basketball players, or any athlete who needs to be faster in their first few steps. If your first step matters, your mechanics matter. WHAT YOU GET Shin angle at each ground contact across your first three steps Ground contact and flight time per step Speed at each step calculated from your footage Session history to track improvement over time See how your mechanics correlate with your speed across sessions HOW IT WORKS Prop your phone at hip height from the side. Film your first 3-4 steps in slow motion. Impulse processes the footage and delivers a full mechanics breakdown in minutes.