Comparison

Leg It! vs Sprint U

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Leg It!

Track your sprint speed in real-time with GPS and receive personalized AI coaching. Compete in weekly tournaments, duels, and relays, and see your health improvements visualized on an anatomical body map. Earn rewards and unlock customizations as you progress.

Highlights
  • Real-time GPS sprint tracking
  • Phone-free Apple Watch app
  • AI-powered personalized coaching
  • Structured multi-sprint circuits
  • Weekly competitions and duels
  • Health impact visualization
  • Science-backed training programs
Features
Read full description

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

About

Sprint U

This AI coach provides personalized gym workouts and recovery insights for athletes. It adapts training plans based on your readiness, soreness, and performance data, helping you train with purpose.

Highlights
  • Personalized adaptive workout plans
  • Readiness insights and CNS tap test
  • Soreness and recovery tracking
  • AI coaching and guidance
  • Integration with Apple Health
  • Training for speed, power, and explosiveness
Features
Read full description

Build real speed with a coach in your pocket. Speed Mastery by Sprint University creates a complete training plan for athletes who want to accelerate faster, reach higher top speeds, and perform when it matters most. Built with professional sprinter and Sprint University founder Lawrence “L.O.” Johnson, Speed Mastery organizes your track work, strength training, recovery, and competition schedule into one adaptive program based on proven sprint training principles. A COMPLETE SPEED DEVELOPMENT PLAN Tell Speed Mastery your event, training days, meet schedule, equipment, and goals. The app builds your season through the right phases, from general preparation and acceleration development to max velocity, speed endurance, and tapering. Miss a workout, change your schedule, or add a competition? Your plan adjusts. TRAIN THE RIGHT QUALITY AT THE RIGHT TIME Your program balances the key components of speed development: • Acceleration • Maximum velocity • Speed endurance • Sprint mechanics • Plyometrics • Strength and power • Mobility and recovery Every session has a purpose, so you always understand what you are training and why. READINESS-DRIVEN TRAINING Speed Mastery reads HRV, resting heart rate, and sleep data from Apple Health, then combines it with a quick daily check-in and CNS tap test. When you are ready, the app helps you push. When fatigue is elevated, it can reduce volume, lower intensity, or substitute recovery work before poor training turns into a setback. STRENGTH TRAINING BUILT FOR SPEED Develop the force and power needed to sprint faster with structured strength phases, including: • Eccentric, isometric, and concentric training • Overcoming isometrics • Eccentric overload • French Contrast • Olympic lift variations • Sprint-specific plyometrics Each method includes clear instructions, coaching cues, and setup guidance. AN AI SPEED COACH THAT ADAPTS Make changes using plain language: “Make Wednesday lighter.” “I race on Saturday.” “Add more acceleration work.” “Give me a lower-body isometric session.” Your coach updates the plan for your review while considering your schedule, equipment, training history, and physical limitations. BUILT FOR SPEED Speed Mastery is designed for: • 60m, 100m, 200m, and 400m sprinters • Football, soccer, rugby, and field-sport athletes • Jumpers and explosive athletes • Coaches building structured speed programs • Any athlete serious about becoming faster TRACK EVERY SESSION Log sprint times, exercises, sets, reps, weights, and readiness. Use target weights based on your 1RMs, built-in plate math, rest timers, Live Activities, and a season calendar that shows how every workout fits into the bigger plan. Stop guessing. Start training for speed. Master your acceleration. Raise your top speed. Perform when it counts. Speed Mastery by Sprint University. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Leg It!4 screens
Sprint U4 screens

Verdict

The call

The clearest difference is monetization model: Leg It! at free with in-app purchases against Sprint U's subscription. Leg It! also leads on device support (3 vs 1) and iOS requirement (15.1 vs 26.0). Sprint U's advantage is update cadence (every 3 days vs weekly). On price, rating, review sentiment and ratings volume there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Leg It! sells 8 in-app purchases, starting at $3.99 per month and Sprint U sells 9 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Leg It! against 5.0 for Sprint U. Both are backed by a comparable volume of ratings — 7 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Leg It! ships an update weekly, Sprint U every 3 days. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 6 level
Leg It! versus Sprint U: the parameters behind the verdict, then further details
ParameterLeg It!Sprint U
PriceFreeFree
Rating5.0 (7 ratings)5.0 (4 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings7 — better4
Update frequencyWeeklyEvery 3 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
DevicesiPhone, iPod, Apple Watch — betteriPhone
Requires iOS15.1 — better26.0
Further details — not scored
Size162 MB37 MB
Age rating12+4+
DeveloperLightwave Labs Limited Liability Company1515 Labs Inc.

Customer experience

Leg It!

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Sprint U

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

8 purchases

Leg It!

Subscriptions5
  • Leg It! Pro Monthly$3.991 Month
  • Coach - Starter1 Month trial$9.991 Month
  • Coach Team1 Month trial$24.991 Month
Show 2 more
  • Leg It! Pro7 Days trial$34.991 Year
  • Coach Program$49.991 Month
One-time3
  • Extra Attempts$0.99
  • +1 Sprint Attempt$0.99
  • Leg It! Pro$79.99
9 purchases

Sprint U

Subscriptions9
  • Weekly Subscription$7.997 Days
  • Monthly Subscription$8.991 Month
  • Monthly Subscription$19.991 Month
Show 6 more
  • Yearly Subscription7 Days trial$59.991 Year
  • Yearly Subscription3 Days trial$59.991 Year
  • Monthly Subscription$97.001 Month
  • Yearly Subscription7 Days trial$99.991 Year
  • Yearly Subscription3 Days trial$99.991 Year
  • Yearly Subscription$99.991 Year

Questions

Is Leg It! free?
Leg It! is free to download, with in-app purchases available.
Is Sprint U free?
Sprint U is free to download, with in-app purchases available.
Which has better reviews, Leg It! or Sprint U?
Leg It! and Sprint U are both rated 5.0 out of 5 on the App Store, from 7 and 4 ratings respectively.
Do Leg It! or Sprint U have ads?
Neither Leg It! nor Sprint U shows ads.
Which is updated more often, Leg It! or Sprint U?
Leg It! ships an update weekly, and Sprint U every 3 days. Most recently, Leg It! was updated on November 5, 2026 and Sprint U on October 31, 2026.

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