Comparison

Blast Baseball vs b4

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

Head to head
About

Blast Baseball

This app uses bat sensor technology to analyze baseball swings. It records video, overlays swing metrics, and provides 3D swing analysis. Coaches can use it for player development and recruitment.

Highlights
  • Bat sensor integration
  • Automatic swing detection and video clipping
  • Overlay of swing metrics (Bat Speed, Time to Contact, etc.)
  • 3D swing path analysis
  • Live mode for real-time feedback
  • Side-by-side swing comparison
  • Mobile video analysis with voice-over
Features
Currently charting
Read full description

Train smarter and get better with the bat sensor technology used by nearly all the MLB teams. Simply attach the Blast Baseball Swing Analyzer or Personal Swing Trainer*** to any standard bat and your iPad or iPhone will do the rest. Record video of your swings in the Blast Baseball app* and the patented Smart Video Capture ™ technology will automatically identify your swings, clip your video, and overlay your swing metrics, synchronized at impact. (Bat Speed, Time to Contact, Attack Angle, etc.) With the 3D Swing Tracer, you can replay and analyze your swing path instantly. Live mode provides real-time feedback, allowing you to visualize your swing, make adjustments, and see the results. Compare your swing videos side-by-side or send them to a coach for further analysis. Players and coaches with a membership or free trial can utilize the app’s advanced functionality to automatically assess every swing for swing quality, providing insights in three areas that all great hitters possess: plane, connection, and rotation. Insights make it simple for coaches to evaluate players for recruitment and player development, with recommendations and drills for improvement. Coaches can also streamline coaching feedback through Mobile Video Analysis with voice-over recording and video markup tools. The Blast Baseball Swing Analyzer and Personal Swing Trainer*** are highly accurate, advanced 3D motion capture systems that record your swings. They use Bluetooth® Smart technology to connect to your iPhone or iPad. There’s no need to alter your natural swing. The Swing Analyzer / Personal Swing Trainer know when to dynamically power-up the patented motion detection algorithms to capture your metrics in real-time. They even store data on the Swing Analyzer / Personal Swing Trainer when your mobile device is out of range and download your actions to the Blast app as soon as you reconnect. With the Blast Baseball app* coaches, parents, and players of all ages can gain the insights they need to improve their swing and gain the competitive edge. * The Blast Baseball app requires the Blast Baseball Swing Analyzer or Personal Swing Trainer and the Blast bat attachment to collect data. The app currently supports English language and Imperial measurements. ** Requires a Blast Connect and Premium Services account and Swing Analyzer to provide advanced app, player, and coaching functionality. Blast Connect is an information and player management platform that features data trending, advanced reporting, roster management, mobile video analysis, and more. *** The Blast Baseball Swing Analyzer / Personal Swing Trainer, charger, and bat attachment are sold as packages. Separate purchase required – available from blastmotion.com. Privacy Policy: https://blastmotion.com/privacy-policy/ Terms of Service: https://blastmotion.com/terms-of-service/ Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

b4

Enhance your baseball batting with advanced AI analysis. Track key metrics like exit velocity and launch angle, analyze biomechanics, and receive real-time feedback. Improve your swing and performance with detailed reports and video playback.

Highlights
  • Comprehensive swing analysis
  • Exit velocity and launch angle tracking
  • Bat contact point analysis
  • Real-time playback and analytics
  • Immersive pitch simulation
  • AI-driven performance reports
Features
Read full description

Revolutionize your baseball training experience. Enhance your batting skills, analyze your performance, and take your game to the next level. Get cutting-edge batting stats, biomechanics analysis, and real-time feedback—all with just an iPhone and a tripod! Developed with multiple Major League players. Key Features • Comprehensive Metrics: Access a complete baseball swing analysis toolset, including exit velocity, launch angle, bat path, and biomechanics analysis, to refine your skills and elevate your game. • Bat Contact Point (BCP): Precisely tracks where the bat hits the ball, giving players actionable insights on every swing. • Real-Time Playback: Review and learn from past performances with slow-motion videos, and track your progress with real-time analytics. • Immersive Pitch: An innovative feature that simulates live incoming pitches, refining your timing and reaction down to the millisecond—all from your iPhone. • Dynamic Visualizations: Easily track progress and identify your strengths. • AI Report: Gain deeper insight into your hitting performance. Track SwSp%, xwOBA, exit velocity, launch angle, and more. Batting Statistics Overview • Bat Contact Point Analysis: Your contact point range with minimum, maximum, and distribution to understand patterns and improve consistency session by session. • Bat Path Visualization: Gain in-depth insights into your bat control and make informed adjustments. • Exit Velocity Tracking: Accurately measure the speed of your hits to monitor your progress and aim for new personal bests. • Launch Angle Optimization: Perfect your launch angles for maximum performance and increase hitting probability. • Comprehensive Biomechanics Analysis: Refine your technique by understanding your stride, weight shift, and head movement. • Advanced AI Report: Track hit classifications, analyze SwSp%, xBA, xwOBA, ground-ball to fly-ball ratio, and more to pinpoint and boost your game performance. Subscriptions Our app is free for everyone to use! Access lab-level swing analysis at no cost. The Starter plan lets you analyze up to 30 swings per month. Upgrade anytime for more power! Starter Pass (Free) • 30 swings per month • Perfect for casual swing analysis and quick check-ins Essential • 100 swings per month • More reps, deeper insights, and faster improvement Premium • Unlimited swings per month • Built for dedicated athletes committed to real progress Choose Your Plan Essential • $39.99 / Yearly — Save with our annual subscription • $3.99 / Monthly — Flexible monthly subscription Premium • $149.99 / Yearly — Save with our annual subscription • $14.99 / Monthly — Flexible monthly subscription Coach Access+ • Explore enhanced plans designed specifically for coaches at all levels. Experience Future Tech Today! Dive into advanced batting metrics, enhance your sports performance in real-time, and start your science-backed journey to improvement with the b4-app – all at your fingertips.

Screenshots

Blast Baseball4 screens
b44 screens

Verdict

The call

Blast Baseball and b4 both sit at 4.0 stars, but that hides the real split: 81% of b4's written reviews are positive against 29% of Blast Baseball's. b4 also leads on ads (none vs shown). Blast Baseball's advantage is chart position (#77 vs unranked) and ratings volume (665 vs 152). On price, rating, update cadence and in-app purchases 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. Blast Baseball sells 2 in-app purchases, starting at $14.99 per month and b4 sells 4 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

b4 holds the better App Store score, 4.2 against 4.0. Both are backed by a comparable volume of ratings — 665 and 152 respectively. Written reviews point the same way: 29% of Blast Baseball's written reviews are positive against 81% of b4's.

UpkeepUpdate frequency

Blast Baseball ships an update every 4 weeks, b4 every 3 weeks. The most recent releases landed on November 4, 2026 and November 3, 2026 respectively.

Scorecard5 real differences · 6 level
Blast Baseball versus b4: the parameters behind the verdict, then further details
ParameterBlast Baseballb4
PriceFreeFree
Rating4.0 (665 ratings)4.2 (152 ratings) — better
Positive reviews29.0% of reviews80.6% of reviews — better
Number of ratings665 — better152
Update frequencyEvery 4 weeksEvery 3 weeks — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
Best chart rank#77 — better—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better16.0
Further details — not scored
Size363 MB222 MB
Age rating4+4+
DeveloperBlast Motion, Inc.KeepTossingLab

Customer experience

Blast Baseball

All ratings323 ratings
Positive51.1%
Neutral4.6%
Negative44.3%
Written reviews155 reviews
Positive29.0%
Neutral6.5%
Negative64.5%

b4

All ratings151 ratings
Positive80.8%
Neutral4.0%
Negative15.2%
Written reviews62 reviews
Positive80.6%
Neutral4.8%
Negative14.5%

User reviews

Blast Baseball

From 665 App Store ratings

What we love

  • 📊 Immediate feedback on swing metrics
  • 🎯 Accurate bat speed and attack angle measurements
  • 📱 Quick data delivery to app after contact
  • 🏆 Helpful for tracking progress over time
  • 👨‍🏫 Useful for coaches to set baselines and track team progress

Room to improve

  • 💰 Aggressive subscription paywall for previously free features
  • 🔐 Data held hostage behind subscription walls
  • 🧩 Convoluted app interface and navigation
  • 📊 Overwhelming number of metrics for casual users
  • 🐛 Frequent app crashes and freezes

b4

From 152 App Store ratings

What we love

  • ✅ Accurate exit velocity readings matching professional equipment
  • 📊 Real-time swing analysis and biomechanics feedback
  • 🎯 Launch angle tracking is precise and reliable
  • 👨‍👧‍👦 Suitable for all ages and skill levels
  • 🏋️ Effective tool for identifying and fixing swing weaknesses

Room to improve

  • 🐛 Inconsistent exit velocity readings (off by ±15%)
  • 🐛 Intermittent detection failures after initial readings
  • ❌ Login and authentication issues preventing app access
  • ⚠️ Temperature sensitivity affecting accuracy above 80°F
  • 🔧 Unreliable setup requiring multiple attempts

Bugs and requests

Blast Baseball

Reported bugs

17 issues
  • App crashes on startup or during use
  • Bluetooth connectivity drops frequently
  • Swings fail to record or sync to cloud
  • Video upload and processing failures
  • App freezes during live capture sessions
Show 12 more
  • Offline swings fail to download
  • Ball flight data tracking inconsistent (50-60% failure rate)
  • Video export loses metrics and slow-motion features
  • App force closes and requires reinstall
  • Disk space not freed after deleting videos
  • App incompatible with certain iPad models
  • Audio only works intermittently
  • Sensor connection unstable and requires repeated reconnection
  • Sensor stuck on red light and won't connect
  • Data loss when app crashes mid-session
  • Excessive pop-up notifications
  • App performance degradation over time

Requested features

14 requests
  • User-selectable difficulty levels (novice, intermediate, expert)
  • Ability to overlay biometrics on video
  • Separate tracking for multiple children
  • iPad landscape mode support
  • Integration with GoPro for video capture
Show 9 more
  • In-app infographics explaining metrics and mechanics
  • Ball flight data integrated into main app (not separate paid app)
  • CSV data export functionality
  • Ability to bookmark videos
  • Better bat database with more current models
  • Simplified free tier with basic metrics
  • Grandfather clause for existing device owners
  • Exit velocity and swing decision timing tracking
  • Comparison tools between practice and in-game swings

b4

Reported bugs

7 issues
  • Exit velocity readings fail after first swing
  • Login fails repeatedly even after reinstalling app
  • App stops providing readings mid-session
  • Inaccurate measurements in certain temperature conditions
  • Setup configuration not recognized despite proper calibration
Show 2 more
  • App crashes and becomes unresponsive
  • Inconsistent accuracy across different users and conditions

Requested features

4 requests
  • Distance tracking in feet for hit balls
  • More in-depth analytics and statistics
  • Support for older iPhone models
  • Enhanced data visualization and reporting

In-app purchases

2 purchases

Blast Baseball

Subscriptions2
  • BlastMotion Monthly1 Month trial$14.991 Month
  • BlastMotion Annual1 Month trial$99.001 Year
4 purchases

b4

Subscriptions4
  • Essential Plan$3.991 Month
  • Premium Plan$14.991 Month
  • Essential Plan$39.991 Year
Show 1 more
  • Premium Plan$149.991 Year

Questions

Is Blast Baseball free?
Blast Baseball is free to download, with in-app purchases available.
Is b4 free?
b4 is free to download, with in-app purchases available.
Which has better reviews, Blast Baseball or b4?
b4 is rated higher. Blast Baseball averages 4.0 out of 5 from 665 ratings, while b4 averages 4.2 from 152 ratings.
Do Blast Baseball or b4 have ads?
Blast Baseball shows ads; b4 does not.
Which is updated more often, Blast Baseball or b4?
Blast Baseball ships an update every 4 weeks, and b4 every 3 weeks. Most recently, Blast Baseball was updated on November 4, 2026 and b4 on November 3, 2026.

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