Comparison

Diamond Kinetics vs True Seam

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

Head to head
About

Diamond Kinetics

Improve your baseball or softball swing with this app. It offers virtual hitting experiences, swing analysis, and interactive MLB-themed games. Enhance your performance with real-time metrics and personalized feedback.

Highlights
  • Smart Motion Technology for virtual hitting
  • Diamond Decisions Highlight Arcade
  • MLB SwingMatch for mechanic comparison
  • MLB PLAY BALL Challenges & Lessons
  • Real-time swing metrics with bat sensor
  • Personalized Swing Score
  • Interactive hitting games
Features
Read full description

Diamond Kinetics helps baseball and softball players of all levels improve their swing and optimize their performance. With your FREE App Download, you can access the following Key Features: ▶ Smart Motion Technology ◀ No bat sensor, no problem! Diamond Kinetics Smart Motion Technology uses your phone camera to recognize swings taken so that you can participate in free virtual hitting experiences, like Swing Challenges & Lessons! ▶ Diamond Decisions Highlight Arcade ◀ Show off your Baseball IQ! Interact with MLB highlights like never before and earn XP as you guess the play outcomes in Diamond Decisions. ▶ MLB SwingMatch Experiences ◀ Meet your Big League SwingMatch! Take your swings within the DK App and watch as your mechanics are compared against your favorite pros! Discover whose swing style yours resembles most closely. ▶ MLB PLAY BALL Challenges & Lessons ◀ Can’t attend an MLB PLAY BALL experience in person? No problem! You can participate any time, from anywhere in the Diamond Kinetics app! Take PLAY BALL Hitting Lessons and climb the Leaderboard in challenges with kids from around the country for the chance to win MLB swag! ▶ Exclusive MLB Themed-Experiecnes ◀ Immerse yourself in the world of Major League Baseball with exclusive content Diamond Kinetics. Put your MLB knowledge to the test with interactive quiz games featuring top MLB Plays, take part in Challenges and Interactive Hitting Lessons hosted by your favorite MLB Players, customize your DK Clubhouse with swag from your favorite teams, and more! Upgrade your experience with the DK Bat Sensor (available on Amazon, $50) to access: ▶ Real-time Swing Metrics ◀ The DK Bat Sensor attaches to any bat and delivers swing data to the DK app with every swing, tracking metrics like barrel speed, acceleration, attack angle, and more. Watch your power, speed, quickness, and control improve! ▶ Personalized Swing Score ◀ Swing Score is a highly individualized tool that expresses a player’s swing performance in a single comprehensive number, based on DK’s 11 proven swing metrics. Track your performance as your Swing Score updates with every 100 swings you take. ▶ Metric Rep Swing Activities ◀ Work on a specific aspect of your swing in Metric Rep Swing Activities. Track a specific metric of your choice with every swing you take. ▶ Introductory Hitting Lessons ◀ Master the basics at the plate with Introductory Guided Hitting Lesson featuring trusted coaches like Coach Ballgame and more ▶ Interactive Hitting Games ◀ Attach the DK bat sensor to capture your swing motion, and it's game on! From fastballs to curveballs, you'll experience the excitement of a real game while improving your swing. • HOME RUN DERBY • TRIGGER TO IMPACT • BARREL SPEED CLIMBER ▶ Weekly 1v9 Swing Challenge ◀ Take on a new lineup of MLB players every week in a hitting distance challenge! One randomly selected hitter that beats the MLB 9 will win a real-life prize pack every week. Unlock even MORE premium content with a DK+ Membership (in-app purchase required): DK+ Subscription provides access to premium hitting experiences – including MLB Featured Player Guided Hitting Lessons and Challenges. ▶ LEGAL ◀ End User License Agreement - https://www.diamondkinetics.com/policies-info/end-user-license-agreement Terms of Use - https://www.diamondkinetics.com/policies/terms-of-service Ready to take your game to the next level? Download Diamond Kinetics today and start swinging for the fences like never before.

About

True Seam

Features
Read full description

Built by a coach, True Seam brings team planning, athlete development, and communication into one connected platform for coaches, athletes, and school leadership. PLAN THE WORK Manage rosters, team calendars, practice plans, and strength workouts. Keep assignments, training details, and coach feedback connected to the athletes who need them. DEVELOP YOUR PITCHERS Build and assign bullpen templates, record pitch locations and velocity, and review command and session history. Pitcher and catcher views help coaches record results from their position on the field. REVIEW LIVE RESULTS Track live at-bats and BP scrimmages, review pitch and contact results, and explore balls in play with 2D and 3D field views. Record fielding contributions and errors to support player development. CONNECT TRAINING AND PROGRESS Strength and conditioning tools help coaches organize workouts and review athlete results. Track & Field tools support event-specific development across teams. KEEP THE TEAM INFORMED Role-based notifications help coaches and players follow practices, bullpen assignments, reviews, and team messages. Coaches can manage their notification preferences. SUPPORT SCHOOL LEADERSHIP Athletic Director tools connect school teams, staff access, schedules, and requests. The companion web portal also includes Movement Studio and school event ticketing. True Seam supports iPhone and iPad. Features vary by role, team access, and platform. An existing True Seam account and appropriate team access are required. Notification delivery requires device permission.

Screenshots

Diamond Kinetics4 screens
True Seam4 screens

Verdict

The call

The clearest difference is in-app purchases: True Seam at none against Diamond Kinetics's 4. On price, update cadence, ads and device support 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. Diamond Kinetics sells 4 in-app purchases, starting at $5.99 per month. True Seam asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on November 3, 2026 and November 10, 2026 respectively.

Scorecard1 real difference · 9 level
Diamond Kinetics versus True Seam: the parameters behind the verdict, then further details
ParameterDiamond KineticsTrue Seam
PriceFreeFree
Rating3.4 (151 ratings) — better—
Positive reviews41.0% of reviews—
Number of ratings151 — better—
Update frequencyEvery 2 weeksEvery 2 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone, iPad — better
Requires iOS16.0 — better17.0
Further details — not scored
Size137 MB36 MB
Age rating4+12+
DeveloperDiamond Kinetics, Inc.Drew Elkins

Bugs and requests

Diamond Kinetics

Reported bugs

13 issues
  • Sensor won't connect to app after firmware update
  • Bluetooth pairing fails across multiple devices
  • App crashes when selecting bat
  • Activation code doesn't work
  • Battery dies within 2 minutes
Show 8 more
  • App won't load or opens then closes immediately
  • Swings not counted or registered
  • Disconnects mid-workout
  • Sign-in authentication failures
  • Sensor incompatible with new app version
  • Avatar selection screen freezes
  • Extreme latency and lag in activities
  • Distance measurements wildly inaccurate

Requested features

10 requests
  • Restore 3D swing path visualization
  • View individual session history and data
  • Multiple metrics displayed simultaneously
  • Swing-to-swing comparison and analysis
  • Spreadsheet or graph of historical metrics
Show 5 more
  • Advanced coaching interface for serious players
  • Better device compatibility
  • Improved app stability and performance
  • Real-time feedback without lag
  • Ability to update bat size in firmware

True Seam

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

Diamond Kinetics

Subscriptions4
  • DK+ Monthly$5.991 Month
  • Smart Bat Monthly$5.991 Month
  • DK+ Yearly$59.991 Year
Show 1 more
  • Smart Bat Yearly$59.991 Year
None

True Seam

No in-app purchases

Questions

Is Diamond Kinetics free?
Diamond Kinetics is free to download, with in-app purchases available.
Is True Seam free?
True Seam is free to download, with no in-app purchases.
Do Diamond Kinetics or True Seam have ads?
Neither Diamond Kinetics nor True Seam shows ads.
Which is updated more often, Diamond Kinetics or True Seam?
Diamond Kinetics ships an update every 2 weeks, and True Seam every 2 weeks. Most recently, Diamond Kinetics was updated on November 3, 2026 and True Seam on November 10, 2026.

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