Comparison

b4 vs SubHook

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

Head to head
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.

About

SubHook

This app connects team managers needing last-minute substitute players with players looking for games to join. It streamlines the process of finding players for recreational softball and baseball games, managing rosters, and confirming attendance.

Highlights
  • Post game broadcasts for substitute players
  • Players broadcast availability
  • Search player directory by position and skill
  • Roster and waitlist management
  • Attendance confirmation
  • In-app messaging
  • Game calendar
  • Map and directions
Features
Read full description

SubHook helps recreational teams find fill-in players, organize rosters, and get more games played across softball, baseball, soccer, basketball, and hockey. Whether you manage a team that is one player short or you are looking for your next game, SubHook connects local sports communities in one place. CHOOSE YOUR SPORT Switch between softball, baseball, soccer, basketball, and hockey. Each sport has its own positions, venue search, community feed, teams, conversations, and visual identity. POST OR FIND A GAME Managers can broadcast an open roster spot with the date, time, venue, positions needed, skill level, and notes. Players can browse nearby opportunities and respond in seconds. Players can also post their availability so teams know who is ready to play. MANAGE YOUR TEAM Keep schedules, rosters, roll calls, attendance, waitlists, and team communication together. When a rostered player drops, the next available player can be promoted and notified. MATCH BY SPORT AND POSITION Create sport-specific player profiles and select the positions you play in each sport. Search for nearby players using position, skill level, availability, and distance. FIND THE RIGHT VENUE Discover fields, pitches, courts, gyms, arenas, and rinks near you. Venue search uses sport-specific results, maps, and directions. STAY CONNECTED Message players and managers without sharing your phone number. Sport-scoped inboxes keep each team and community organized. USEFUL NOTIFICATIONS Get notified about nearby games, broadcast responses, roster updates, attendance confirmations, waitlist promotions, messages, and reminders. Notifications open directly to the relevant game or conversation. KEY FEATURES • Softball, baseball, soccer, basketball, and hockey support • Sport-specific positions and player profiles • Open roster and player-availability broadcasts • Nearby player and game discovery • Team rosters, schedules, roll calls, and waitlists • Attendance confirmation and reminders • Direct and team messaging • Sport-specific venue search and maps • Game calendar and directions • Free Agent and Active Now availability • Push notifications with deep links Stop chasing group chats. Find the players you need, join the games you want, and keep every team organized with SubHook.

Screenshots

b44 screens
SubHook4 screens

Verdict

The call

The clearest difference is rating: SubHook at 5.0 against b4's 4.2. SubHook also leads on in-app purchases (none vs 4) and review sentiment (100% vs 81%). b4's advantage is ratings volume (151 vs 1). On price, ads and iOS requirement 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. b4 sells 4 in-app purchases, starting at $3.99 per month. SubHook asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

SubHook holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: b4 has 151 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 81% of b4's written reviews are positive against 100% of SubHook's.

UpkeepUpdate frequency

b4 ships an update every 3 weeks, SubHook every 9 days. The most recent releases landed on October 20, 2026 and October 9, 2026 respectively.

Scorecard7 real differences · 3 level
b4 versus SubHook: the parameters behind the verdict, then further details
Parameterb4SubHook
PriceFreeFree
Rating4.2 (151 ratings)5.0 (1 ratings) — better
Positive reviews80.6% of reviews100.0% of reviews — better
Number of ratings151 — better1
Update frequencyEvery 3 weeksEvery 9 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS16.015.1 — better
Further details — not scored
Size233 MB68 MB
Age rating4+17+
DeveloperKeep Tossing Lab Inc.VibeCMD

Customer experience

b4

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

SubHook

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

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

SubHook

Not enough reviews yet to summarise bugs or requests.

In-app purchases

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
None

SubHook

No in-app purchases

Questions

Is b4 free?
b4 is free to download, with in-app purchases available.
Is SubHook free?
SubHook is free to download, with no in-app purchases.
Which has better reviews, b4 or SubHook?
SubHook is rated higher. b4 averages 4.2 out of 5 from 151 ratings, while SubHook averages 5.0 from 1 ratings.
Do b4 or SubHook have ads?
Neither b4 nor SubHook shows ads.
Which is updated more often, b4 or SubHook?
b4 ships an update every 3 weeks, and SubHook every 9 days. Most recently, b4 was updated on October 20, 2026 and SubHook on October 9, 2026.

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