# Arm Care vs Rapsodo Diamond

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.

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.

## The numbers

| Metric | Arm Care | Rapsodo Diamond |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (3K ratings)](https://appshunter.io/ios/app/arm-care/id1480260823/reviews)** | [2.3 (21 ratings)](https://appshunter.io/ios/app/rapsodo-diamond/id1492851539/reviews) |
| Number of ratings | **3K** | 21 |
| Positive reviews | **73.8% of reviews** | 20.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 5 weeks |
| Monetization | Subscription | **Free** |
| Best chart rank | **#194** | — |
| Size | 197 MB | 422 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [ArmCare](https://appshunter.io/developer/1480260822) | [Rapsodo Pte Ltd](https://appshunter.io/developer/573566751) |

## What reviewers say

### Arm Care

[App page](https://appshunter.io/ios/app/arm-care/id1480260823)

**Currently charting:** #194 Top Grossing · Sports (US App Store)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $11.99 | per month |
| Premium | $12.00 | per month |
| Premium | $15.00 | per month |
| Premium | $15.00 | per month |
| Premium | $72.00 | per year |
| Premium | $72.00 | per year |
| Premium | $72.00 | per year |
| Premium | $72.00 | per year |
| Premium | $99.00 | per year |
| Premium | $99.00 | per year |

**What reviewers like**

- 🚀 Strength gains
- 🚀 Personalized plans
- 👍 Helpful for injury prevention
- 👍 User-friendly interface
- 👍 Clear instructions

**What reviewers complain about**

- 🐛 App crashes and glitches
- 🔒 Difficult to cancel subscription
- 💰 Expensive yearly fee

**Reported bugs**

- App turns off during exercises
- Pauses music when opened

**Requested features**

- Ability to cancel subscription within the app
- Offline mode for workouts
- Improved music integration


### Rapsodo Diamond

[App page](https://appshunter.io/ios/app/rapsodo-diamond/id1492851539)

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.

**Highlights:** Combined pitching and hitting data, Single access point for Rapsodo systems, Direct cloud access, Enhanced team management, Data analysis

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Arm Care free?

Arm Care is free to download, with in-app purchases available.

### Is Rapsodo Diamond free?

Rapsodo Diamond is free to download, with no in-app purchases.

### Which has better reviews, Arm Care or Rapsodo Diamond?

Arm Care is rated higher. Arm Care averages 4.9 out of 5 from 3K ratings, while Rapsodo Diamond averages 2.3 from 21 ratings.

### Do Arm Care or Rapsodo Diamond have ads?

Neither Arm Care nor Rapsodo Diamond shows ads.

### Which is updated more often, Arm Care or Rapsodo Diamond?

Arm Care ships an update weekly, and Rapsodo Diamond every 5 weeks. Most recently, Arm Care was updated on November 3, 2026 and Rapsodo Diamond on November 3, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*