# My Jump Lab vs Reaction Light Trainer

The clearest difference is ads: My Jump Lab at none against Reaction Light Trainer's shown. Reaction Light Trainer's advantage is update cadence (every 2 weeks vs every 3 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. My Jump Lab sells 3 in-app purchases, starting at $5.99 per month and Reaction Light Trainer sells 2 in-app purchases, starting at $2.99 per year. Whichever you choose, the download price is not the number that matters.

My Jump Lab ships an update every 3 weeks, Reaction Light Trainer every 2 weeks. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | My Jump Lab | Reaction Light Trainer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (255 ratings)](https://appshunter.io/ios/app/my-jump-lab/id1554077178/reviews)** | — |
| Number of ratings | **255** | — |
| Positive reviews | 59.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 90 MB | 46 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad, Mac | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Carlos Balsalobre](https://appshunter.io/developer/1075902286) | [zhenyu song](https://appshunter.io/developer/1721282851) |

## What reviewers say

### My Jump Lab

[App page](https://appshunter.io/ios/app/my-jump-lab/id1554077178)

This app provides scientifically validated sports performance testing using your device's camera and AI. It measures vertical jump, barbell velocity, and joint range of motion, offering over 30 tests for athletes, coaches, and researchers. Data can be exported for detailed analysis and progress tracking.

**Highlights:** AI-powered real-time analysis, Vertical jump performance measurement, Barbell velocity for VBT, Joint range of motion (ROM) assessment, Over 30 specialized tests, iCloud sync and team sharing, Data export to CSV

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium- 1 month | $5.99 | per month |
| Premium - 1 year | $39.99 | per year |
| Premium - Lifetime | $105.99 | one-time |

**What reviewers like**

- ✅ Scientifically validated measurements
- 📊 Comprehensive testing capabilities (CMJ, SJ, VBT, etc.)
- 💪 Excellent for athletes, coaches, and sports scientists
- 🎯 Accurate vertical jump and performance tracking
- 📱 User-friendly and intuitive interface

**What reviewers complain about**

- 🐛 Frequent app crashes during tests
- 📹 Camera detection issues with exercises
- ❌ Inconsistent measurement accuracy
- 🔄 Synchronization problems between devices
- ⚠️ Limited free trial functionality

**Reported bugs**

- App crashes during complete test (3rd-4th attempt)
- CMJ automatic AI detection fails repeatedly
- Camera not activating in real-time recording
- Force-velocity profile graph not displaying
- Velocity measurements inconsistent between real-time and graph

**Requested features**

- More comprehensive video tutorials
- Desktop app synchronization
- MySprint integration
- PDF export of assessment reports
- Additional exercise templates for encoder


### Reaction Light Trainer

[App page](https://appshunter.io/ios/app/reaction-light-trainer-reflex/id6778074866)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads (Yearly) | $2.99 | per year |
| Remove Ads | $6.99 | one-time |


## Frequently asked questions

### Is My Jump Lab free?

My Jump Lab is free to download, with in-app purchases available.

### Is Reaction Light Trainer free?

Reaction Light Trainer is free to download, with in-app purchases available.

### Do My Jump Lab or Reaction Light Trainer have ads?

Reaction Light Trainer shows ads; My Jump Lab does not.

### Which is updated more often, My Jump Lab or Reaction Light Trainer?

My Jump Lab ships an update every 3 weeks, and Reaction Light Trainer every 2 weeks. Most recently, My Jump Lab was updated on November 7, 2026 and Reaction Light Trainer on October 31, 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.*