# QMD4 Stroke Trainer/Analyzer vs APPA

The clearest difference is in-app purchases: QMD4 Stroke Trainer/Analyzer at none against APPA's 2. QMD4 Stroke Trainer/Analyzer also leads on ads (none vs shown) and iOS requirement (12.0 vs 15.0). APPA's advantage is update cadence (monthly vs every 2 months). On price and device support there is nothing between them.

Both are free to download. APPA sells 2 in-app purchases, starting at $20.99 per 6 months. QMD4 Stroke Trainer/Analyzer asks for nothing beyond the download.

QMD4 Stroke Trainer/Analyzer ships an update every 2 months, APPA monthly. The most recent releases landed on October 14, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | QMD4 Stroke Trainer/Analyzer | APPA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/qmd4-stroke-traineranalyzer/id6737728075/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free | — |
| Size | 10 MB | 44 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Mosens LLC](https://appshunter.io/developer/1282490669) | [Creative Sports Gymnastics And Services Trading Company Limited](https://appshunter.io/developer/1826262254) |

## What reviewers say

### QMD4 Stroke Trainer/Analyzer

[App page](https://appshunter.io/ios/app/qmd4-stroke-traineranalyzer/id6737728075)

This app analyzes your billiards stroke using a Bluetooth-enabled device attached to your cue. It provides detailed 3D stroke information, playback, velocity charts, and instant audible alerts to help you identify and fix flaws.

**Highlights:** Bluetooth cue attachment, 3D stroke data transmission, Automatic shot recording/playback, Stroke velocity chart, Cue tip view, Audible 'as you stroke' alerts, Comprehensive practice metrics

**Features:** macOS Compatibility

**In-app purchases:** none


### APPA

[App page](https://appshunter.io/ios/app/appa-rate/id6749283565)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| APPA-Rate Membership 6 months | $20.99 | per 6 months |
| APPA-Rate Membership 12 months | $35.99 | per year |


## Frequently asked questions

### Is QMD4 Stroke Trainer/Analyzer free?

QMD4 Stroke Trainer/Analyzer is free to download, with no in-app purchases.

### Is APPA free?

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

### Do QMD4 Stroke Trainer/Analyzer or APPA have ads?

APPA shows ads; QMD4 Stroke Trainer/Analyzer does not.

### Which is updated more often, QMD4 Stroke Trainer/Analyzer or APPA?

QMD4 Stroke Trainer/Analyzer ships an update every 2 months, and APPA monthly. Most recently, QMD4 Stroke Trainer/Analyzer was updated on October 14, 2026 and APPA on October 6, 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.*