# Arm Care vs Synker

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.

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.

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.

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.

## The numbers

| Metric | Arm Care | Synker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (3K ratings)](https://appshunter.io/ios/app/arm-care/id1480260823/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/synker/id6738967031/reviews)** |
| Number of ratings | **3K** | 4 |
| Positive reviews | 73.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 2 months |
| Monetization | Subscription | **Free** |
| Best chart rank | **#165** | — |
| Size | 189 MB | 59 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [ArmCare](https://appshunter.io/developer/1480260822) | [Upgrade Consulting, LLC](https://appshunter.io/developer/1756392466) |

## What reviewers say

### Arm Care

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

**Currently charting:** #165 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


### Synker

[App page](https://appshunter.io/ios/app/synker/id6738967031)

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

**In-app purchases:** none


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