Arm Care vs Rapsodo Diamond
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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ArmCare – Test. Throw. Train. Build a stronger arm. Throw harder. Recover smarter. ArmCare uses your strength, fatigue, and recovery data to personalize your throwing recommendations and deliver year-round custom arm care training. Trusted by over 100,000 users, ArmCare takes the guesswork out of arm care. HOW IT WORKS 1. TEST YOUR STRENGTH Use the ArmCare Strength Sensor to measure arm strength, identify weaknesses, and monitor fatigue and recovery in just 5 minutes. 2. OPTIMIZE YOUR THROWING Get personalized throwing recommendations based on your arm strength, fatigue, and recovery. 3. YEAR-ROUND CUSTOM TRAINING Follow personalized training programs designed to strengthen your weak links, improve arm strength, and maximize velocity potential. TRACK YOUR PROGRESS The all-new Home Screen makes it easier than ever to: Access testing, throwing, and training. Track weekly progress and stay consistent. Monitor total strength gains and personal records. Earn badges as you reach new milestones. Stop guessing. Start measuring. The ArmCare App is designed to work with the ArmCare Strength Sensor. ARMCARE PREMIUM Monthly: $15/month Annual: $99/year SUBSCRIPTION TERMS Payment is charged to your Apple Account at purchase. Subscriptions automatically renew unless canceled at least 24 hours before renewal. Manage or cancel anytime in your Apple Account settings. Access continues through the current paid period. MEDICAL DISCLAIMER ArmCare provides fitness and performance information only, not medical advice, diagnosis, or treatment. Terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy: https://armcare.com/pages/privacy-policy
Rapsodo Diamond
This application consolidates pitching and hitting data into a single platform for Rapsodo system users. It offers direct cloud access and enhanced team management features, streamlining data analysis and team coordination for Rapsodo Team Members.
- Combined pitching and hitting data
- Single access point for Rapsodo systems
- Direct cloud access
- Enhanced team management
- Data analysis
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The Rapsodo Diamond App is the latest iOS application from the Diamond Sports team at Rapsodo. This app combines the attributes from the Pitching and Hitting applications and allows users a single point of access to Rapsodo's systems. Additionally, direct cloud access and more team management functionalities have been added for users to do more inside the application itself. Available for Rapsodo Team Members only.
Screenshots
Verdict
The clearest difference is review sentiment: Arm Care at 74% against Rapsodo Diamond's 20%. Arm Care also leads on rating (4.9 vs 2.3) and ratings volume (3K vs 21). Rapsodo Diamond's advantage is in-app purchases (none vs 10) and iOS requirement (13.0 vs 15.0). On price, 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
Both are free to download. Arm Care sells 10 in-app purchases, starting at $11.99 per month. Rapsodo Diamond asks for nothing beyond the download.
Arm Care holds the better App Store score, 4.9 against 2.3. That said, the two scores are not equally well evidenced: Arm Care has 3K ratings behind it against 21, so its average is the more settled of the two. Written reviews point the same way: 74% of Arm Care's written reviews are positive against 20% of Rapsodo Diamond's.
Arm Care ships an update weekly, Rapsodo Diamond every 5 weeks. Both last shipped on November 3, 2026.
| Parameter | Arm Care | Rapsodo Diamond |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (3K ratings) — better | 2.3 (21 ratings) |
| Positive reviews | 73.8% of reviews — better | 20.0% of reviews |
| Number of ratings | 3K — better | 21 |
| Update frequency | Weekly — better | Every 5 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Subscription | Free — better |
| Best chart rank | #159 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 197 MB | 422 MB |
| Age rating | 12+ | 4+ |
| Developer | ArmCare | Rapsodo Pte Ltd |
Customer experience
Arm Care
Rapsodo Diamond
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
Rapsodo Diamond
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Arm Care
- Premium$11.991 Month
- Premium7 Days trial$12.001 Month
- Premium7 Days trial$15.001 Month
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- Premium1 Year trial$15.001 Month
- Premium7 Days trial$72.001 Year
- Premium1 Month trial$72.001 Year
- Premium1 Year trial$72.001 Year
- Premium$72.001 Year
- Premium7 Days trial$99.001 Year
- Premium1 Year trial$99.001 Year
Rapsodo Diamond
No in-app purchases
