Comparison

Arm Care vs Synker

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

Head to head
About

Arm Care

This app uses a strength sensor to measure arm strength, fatigue, and recovery. It then provides personalized training programs to improve velocity and prevent injuries. Thousands of players and MLB teams rely on this technology for arm health monitoring.

Highlights
  • Measure arm strength and range of motion
  • Track fatigue and recovery metrics
  • Individualized throwing and arm care programs
  • Identify and strengthen weak links
  • Monitor arm health and velocity gains
  • Customized daily training routines
Features
Currently charting
Read full description

The ArmCare App is designed to be used with the ArmCare Strength Sensor. ArmCare Technology uses your strength, fatigue and recovery data to individualize training and unlock the potential for huge velocity gains. Gone are the days of using the same arm care band routine. The future is knowing where you are weak, how your arm fatigues and if you are recovering optimally between outings. Thousands of players and over 20 MLB teams are using the ArmCare technology to monitor arm health and velocity. HOW IT WORKS 1. MEASURE YOUR STRENGTH Using the ArmCare Sensor, accurately measure the strength & range of motion of your arm in 5 minutes…with no assistance needed. 2. CHECK YOUR KEY METRICS Strength, Fatigue, Recovery are used to individualize throwing programs, bullpens, pitch counts, velocity programs, pitch design & mechanics 3. ARMCARE OPTIMIZED FOR YOU The app prescribes customized arm care programs to attack your weak links. You know exactly what training to do to get results fast BENEFITS - Players will get real metrics on their rotator cuff strength the same way a bat sensor helps dial in swing path and launch angle. - Players will receive custom arm care programs everyday to help strengthen their weak links, rather than a one size fits all program. - Each player will know exactly what to do to keep his arm feeling fresh and strong all season long. No Medical Advice: - The Program provides general information only and does not constitute providing medical or health care services of any kind, nor engagement in human subjects research. - The information provided in the Program is not medical advice and should not be treated as such. Arm Care subscription Premium: Arm Care plans: Annual: $72 Payments and Renewal: Payment will be charged to iTunes Account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period. You can manage or turn off auto-renew in your Account settings at any time after purchase. No cancellation of the current subscription is allowed during the active period. Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy policy: https://armcare.com/pages/privacy-policy

About

Synker

This app helps young athletes showcase their skills to college recruiters and MLB scouts through detailed performance analytics and social media exposure. It provides opportunities for elite competition and tracks every move with precision data.

Highlights
  • Trackman data for performance analytics
  • Visual analytics for games and batting practice
  • Social media exposure for athletes
  • Elite competition opportunities
  • Synker Scout Team selection
Read full description

At the Synker Travel Team Showcase, you'll have the chance to prove yourself for college recruiters and MLB scouts. With detailed visual analytics data capturing every move and your highlights shared on social media. You’re not just playing the game—you’re playing for your future Parents, this is the opportunity to set your athlete on the path to college and beyond. • Trackman Data: Precision analytics for BP & in-game performance • Visual Analytics Data: Precision analytics for BP & in-game performance • Social Media Exposure: Showcase your skills to a broad audience • Elite Competition: Laser 60, Batting Practice, and two full games • Exclusive Opportunity: Top performers earn a spot on the Synker Scout Team

Screenshots

Arm Care4 screens
Synker4 screens

Verdict

The call

The clearest difference is in-app purchases: Synker at none against Arm Care's 11. Arm Care's advantage is update cadence (every 9 days vs every 2 months) and ratings volume (3K vs 4). On price, rating, 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. Arm Care sells 10 in-app purchases, starting at $11.99 per month. Synker asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for Arm Care against 5.0 for Synker. That said, the two scores are not equally well evidenced: Arm Care has 3K ratings behind it against 4, so its average is the more settled of the two.

UpkeepUpdate frequency

Arm Care ships an update every 9 days, Synker every 2 months. The most recent releases landed on October 24, 2026 and October 16, 2026 respectively.

Scorecard5 real differences · 6 level
Arm Care versus Synker: the parameters behind the verdict, then further details
ParameterArm CareSynker
PriceFreeFree
Rating4.9 (3K ratings)5.0 (4 ratings) — better
Positive reviews73.8% of reviews—
Number of ratings3K — better4
Update frequencyEvery 9 days — betterEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscriptionFree — better
Best chart rank#194 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.015.0
Further details — not scored
Size189 MB59 MB
Age rating12+4+
DeveloperArmCareUpgrade Consulting, LLC

Customer experience

Arm Care

All ratings2,990 ratings
Positive97.1%
Neutral1.3%
Negative1.6%
Written reviews42 reviews
Positive73.8%
Neutral4.8%
Negative21.4%

Synker

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Arm Care

Reported bugs

2 issues
  • App turns off during exercises
  • Pauses music when opened

Requested features

3 requests
  • Ability to cancel subscription within the app
  • Offline mode for workouts
  • Improved music integration

Synker

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

Arm Care

Subscriptions10
  • Premium$11.991 Month
  • Premium7 Days trial$12.001 Month
  • Premium7 Days trial$15.001 Month
Show 7 more
  • Premium1 Year trial$15.001 Month
  • Premium7 Days trial$72.001 Year
  • Premium1 Month trial$72.001 Year
  • Premium1 Year trial2 variants$72.001 Year
  • Premium$72.001 Year
  • Premium7 Days trial$99.001 Year
  • Premium1 Year trial$99.001 Year
None

Synker

No in-app purchases

Questions

Is Arm Care free?
Arm Care is free to download, with in-app purchases available.
Is Synker free?
Synker is free to download, with no in-app purchases.
Which has better reviews, Arm Care or Synker?
Synker is rated higher. Arm Care averages 4.9 out of 5 from 3K ratings, while Synker averages 5.0 from 4 ratings.
Do Arm Care or Synker have ads?
Neither Arm Care nor Synker shows ads.
Which is updated more often, Arm Care or Synker?
Arm Care ships an update every 9 days, and Synker every 2 months. Most recently, Arm Care was updated on October 24, 2026 and Synker on October 16, 2026.

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