Comparison

Radar Gun vs Arm Speed Motion Analyzer

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

Head to head
About

Radar Gun

Measure the speed of a baseball pitcher's throw. Tap when the ball is released and again when it's caught to calculate average speed. Offers preset distances for baseball, little league, and softball, plus a custom option.

Highlights
  • Measure pitch speed
  • Tap to start and stop timer
  • Preset distances (Baseball, Little League, Softball)
  • Custom distance input
  • Average speed calculation
Features
Read full description

Radar Gun lets you see how fast your pitcher is throwing. Simply press the screen when the ball is thrown and release when the ball is caught. This is an easier and more accurate method than having to press a button twice. This makes Radar Gun the most accurate pitch speed tracker in the store. Features: Baseball - 60'6" Little League - 46' Softball - 43' Custom - Enter any distance you want Note: The speed you are getting is an average speed using distance and time. The accuracy is dependent on getting an accurate time from pitch to catch which is based on your reaction time pressing and releasing the button.

About

Arm Speed Motion Analyzer

Measure throw and swing speeds without specialized equipment. This app uses your iPhone or Apple Watch motion sensors to provide real-time feedback for various sports. Track progress, set personal records, and analyze trends to train smarter.

Highlights
  • Real-time speed detection
  • iPhone and Apple Watch compatibility
  • Supports multiple sports
  • Personal records and achievements
  • Weekly trends and analytics
  • Health app integration
Features
Read full description

Track your arm speed, no radar gun needed. Arm Speed uses motion sensors on your iPhone or Apple Watch to measure throw and swing speed in real time. Built for athletes who want to train smarter and track progress across every session. WORKS WITH iPHONE AND APPLE WATCH Version 3.0 introduces iPhone motion tracking: just hold your phone and throw or swing. Apple Watch support is still here and better than ever. Train with whichever device you have on hand. REAL-TIME SPEED TRACKING See your speed instantly after every throw or swing. Arm Speed detects each motion automatically, no buttons to press, just start a session, do your thing, and watch the numbers appear. See device acceleration change in realtime: even the slightest device jiggle will impact real time acceleration. SEE YOUR MOTION PATH Go beyond the number. Every throw and swing is captured as a 3D motion path, a ribbon that traces your arm through the air. Thicker means faster, and color grades your smoothness from fluid green to jagged red. Spin the path around, compare reps, and spot hitches in your mechanics that a speed reading alone can't show. PERSONAL RECORDS AND ACHIEVEMENTS Track your all-time top speed, best session, longest streak, and more. Unlock achievements as you hit milestones., from your first 30 MPH throw to logging your 1,000th rep. Celebration animations fire off when you break a record or unlock something new. WEEKLY TRENDS AND ANALYTICS See how your speed and volume change week over week. A ghost line overlays your previous week so you can visualize improvement at a glance. Speed band breakdowns show where your throws are clustering, and daily activity heatmaps keep you accountable. HEALTH APP INTEGRATION Every session can log as a workout in Apple Health with heart rate tracking. Your training data lives alongside the rest of your fitness profile. FREE TO USE Arm Speed is free to download and start tracking. Upgrade to Arm Speed Pro to unlock interactive 3D motion paths, unlimited session history, search and filters across your sessions, advanced speed and acceleration charts, custom chart date ranges, bulk session management, personal records, achievements, and weekly trends. BUILT FOR YOUR SPORT Baseball throwing and batting Disc golf and frisbee throws Softball pitching and hitting Pickleball serves and volleys Tennis serves and groundstrokes Golf swing speed Football throws Cricket bowling and batting Hockey and lacrosse stick speed Badminton, racquetball, and more Website: https://armspeed.app Follow @arm_speed_app on Instagram for news and updates. Questions or feedback? Email: feedback@fre-studios.com Terms of Service: https://armspeed.app/legal/terms Privacy Policy: https://armspeed.app/legal/privacy

Screenshots

Radar Gun3 screens
Arm Speed Motion Analyzer4 screens

Verdict

The call

The clearest difference is price: Arm Speed Motion Analyzer at Free against Radar Gun's $0.99. Arm Speed Motion Analyzer also leads on update cadence (fortnightly vs every 21 months) and rating (4.2 vs 3.9). Radar Gun's advantage is in-app purchases (none vs 3) and ratings volume (146 vs 11). On review sentiment, 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

Arm Speed Motion Analyzer is free to download; Radar Gun costs $0.99 up front. Arm Speed Motion Analyzer sells 3 in-app purchases, starting at $0.99 per month. Radar Gun asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Arm Speed Motion Analyzer holds the better App Store score, 4.2 against 3.9. That said, the two scores are not equally well evidenced: Radar Gun has 146 ratings behind it against 11, so its average is the more settled of the two. Written reviews split almost evenly too, at 31% and 31% positive.

UpkeepUpdate frequency

Radar Gun ships an update every 21 months, Arm Speed Motion Analyzer fortnightly. The most recent releases landed on October 14, 2026 and October 4, 2026 respectively.

Scorecard7 real differences · 3 level
Radar Gun versus Arm Speed Motion Analyzer: the parameters behind the verdict, then further details
ParameterRadar GunArm Speed Motion Analyzer
Price$0.99Free — better
Rating3.9 (146 ratings)4.2 (11 ratings) — better
Positive reviews31.3% of reviews — better30.8% of reviews
Number of ratings146 — better11
Update frequencyEvery 21 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPodiPhone, iPad, Apple Watch — better
Requires iOS11.0 — better18.1
Further details — not scored
Size2 MB11 MB
Age rating4+4+
Developer30 South LLCFRE STUDIOS LLC

Customer experience

Radar Gun

All ratings146 ratings
Positive72.6%
Neutral4.1%
Negative23.3%
Written reviews16 reviews
Positive31.3%
Neutral6.3%
Negative62.5%

Arm Speed Motion Analyzer

All ratings11 ratings
Positive81.8%
Neutral0.0%
Negative18.2%
Written reviews26 reviews
Positive30.8%
Neutral11.5%
Negative57.7%

In-app purchases

None

Radar Gun

No in-app purchases

3 purchases

Arm Speed Motion Analyzer

Subscriptions2
  • Arm Speed Pro Monthly7 Days trial$0.991 Month
  • Arm Speed Pro7 Days trial$9.991 Year
One-time1
  • Arm Speed Analyzer Pro$2.99

Questions

Is Radar Gun free?
Radar Gun costs $0.99, with no in-app purchases.
Is Arm Speed Motion Analyzer free?
Arm Speed Motion Analyzer is free to download, with in-app purchases available.
Which has better reviews, Radar Gun or Arm Speed Motion Analyzer?
Arm Speed Motion Analyzer is rated higher. Radar Gun averages 3.9 out of 5 from 146 ratings, while Arm Speed Motion Analyzer averages 4.2 from 11 ratings.
Do Radar Gun or Arm Speed Motion Analyzer have ads?
Neither Radar Gun nor Arm Speed Motion Analyzer shows ads.
Which is updated more often, Radar Gun or Arm Speed Motion Analyzer?
Radar Gun ships an update every 21 months, and Arm Speed Motion Analyzer fortnightly. Most recently, Radar Gun was updated on October 14, 2026 and Arm Speed Motion Analyzer on October 4, 2026.

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