# Arm Speed Motion Analyzer vs Disc

The clearest difference is monetization model: Arm Speed Motion Analyzer at freemium against Disc's subscription. Disc's advantage is rating (4.4 vs 4.2) and review sentiment (43% vs 31%). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Arm Speed Motion Analyzer sells 3 in-app purchases, starting at $0.99 per month and Disc sells 8 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Disc holds the better App Store score, 4.4 against 4.2. That said, the two scores are not equally well evidenced: Disc has 61 ratings behind it against 11, so its average is the more settled of the two. Written reviews point the same way: 31% of Arm Speed Motion Analyzer's written reviews are positive against 43% of Disc's.

Arm Speed Motion Analyzer ships an update fortnightly, Disc every 3 weeks. The most recent releases landed on October 22, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Arm Speed Motion Analyzer | Disc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (11 ratings)](https://appshunter.io/ios/app/arm-speed-motion-analyzer/id1539318987/reviews) | **[4.4 (61 ratings)](https://appshunter.io/ios/app/disc-i/id6447535006/reviews)** |
| Number of ratings | 11 | **61** |
| Positive reviews | 30.8% of reviews | **42.9% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Monetization | **Freemium** | Subscription |
| Size | 11 MB | 42 MB |
| Requires iOS | 18.1 | **18.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [FRE STUDIOS LLC](https://appshunter.io/developer/619585736) | [Disc.ai LLC](https://appshunter.io/developer/951540378) |

## What reviewers say

### Arm Speed Motion Analyzer

[App page](https://appshunter.io/ios/app/arm-speed-motion-analyzer/id1539318987)

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:** Family Sharing, Apple Watch app

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Arm Speed Pro Monthly | $0.99 | per month |
| Arm Speed Pro | $9.99 | per year |
| Arm Speed Analyzer Pro | $2.99 | one-time |


### Disc

[App page](https://appshunter.io/ios/app/disc-i/id6447535006)

This app uses AI to analyze and improve your disc golf and ultimate frisbee throws. Record your form, get detailed breakdowns, and compare it to professional athletes. Perfect for players of all levels seeking to elevate their game.

**Highlights:** AI throw analysis, Slow-motion recording, Form breakdown, Comparison to pro athletes, Automated scoring, Backhand, Forehand, and Putting support

**Features:** Family Sharing, Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $4.99 | per month |
| Amateur Tier | $4.99 | per month |
| Pro Monthly | $19.99 | per month |
| Yearly Subscription | $49.99 | per year |
| Amateur Yearly | $49.99 | per year |
| Pro Yearly | $199.99 | per year |
| Form Analysis | $2.99 | one-time |
| Robert Burridge's Form | $19.99 | one-time |


## Frequently asked questions

### Is Arm Speed Motion Analyzer free?

Arm Speed Motion Analyzer is free to download, with in-app purchases available.

### Is Disc free?

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

### Which has better reviews, Arm Speed Motion Analyzer or Disc?

Disc is rated higher. Arm Speed Motion Analyzer averages 4.2 out of 5 from 11 ratings, while Disc averages 4.4 from 61 ratings.

### Do Arm Speed Motion Analyzer or Disc have ads?

Neither Arm Speed Motion Analyzer nor Disc shows ads.

### Which is updated more often, Arm Speed Motion Analyzer or Disc?

Arm Speed Motion Analyzer ships an update fortnightly, and Disc every 3 weeks. Most recently, Arm Speed Motion Analyzer was updated on October 22, 2026 and Disc on October 18, 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.*