# dragy·Lap vs JB4 PRO

The clearest difference is rating: dragy·Lap at 5.0 against JB4 PRO's 4.4. JB4 PRO's advantage is ratings volume (14 vs 1). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

dragy·Lap holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: JB4 PRO has 14 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 45% of dragy·Lap's written reviews are positive against 50% of JB4 PRO's, so the app with the better star average is not the one people write more warmly about.

dragy·Lap ships an update fortnightly, JB4 PRO every 2 weeks. Both last shipped on October 30, 2026.

## The numbers

| Metric | dragy·Lap | JB4 PRO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/dragylap-new-gps-lap-timer/id1617703369/reviews)** | [4.4 (14 ratings)](https://appshunter.io/ios/app/jb4-pro/id6746129072/reviews) |
| Number of ratings | 1 | **14** |
| Positive reviews | 45.5% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 weeks |
| Monetization | Free | Free |
| Size | 332 MB | 22 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Harbin Qirui Technology Company With Limited Liability.](https://appshunter.io/developer/1260905447) | [Burger Motorsports, Inc](https://appshunter.io/developer/1815297026) |

## What reviewers say

### dragy·Lap

[App page](https://appshunter.io/ios/app/dragylap-new-gps-lap-timer/id1617703369)

This app acts as a next-generation GPS lap timer, compatible with various Dragy devices. It offers real-time predictive lap timing, dual-camera video recording with data overlays, and detailed analysis tools. Compete on leaderboards and share your best laps instantly.

**Highlights:** Real-time predictive lap timing, Dual camera video recording & overlay, GoPro & DJI OSMO Action support, 3D track replay, Lap comparison tools, VBO file export, Global leaderboard

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

**In-app purchases:** none


### JB4 PRO

[App page](https://appshunter.io/ios/app/jb4-pro/id6746129072)

Integrate your performance tuner with your smartphone to adjust engine maps, view real-time data, and manage system settings. This app requires a specific Bluetooth adapter for full functionality.

**Highlights:** Change maps, Monitor live engine data, Record logs, Manage fault codes, Update JB4 firmware, Smartphone integration

**In-app purchases:** none


## Frequently asked questions

### Is dragy·Lap free?

dragy·Lap is free to download, with no in-app purchases.

### Is JB4 PRO free?

JB4 PRO is free to download, with no in-app purchases.

### Which has better reviews, dragy·Lap or JB4 PRO?

dragy·Lap is rated higher. dragy·Lap averages 5.0 out of 5 from 1 ratings, while JB4 PRO averages 4.4 from 14 ratings.

### Do dragy·Lap or JB4 PRO have ads?

Neither dragy·Lap nor JB4 PRO shows ads.

### Which is updated more often, dragy·Lap or JB4 PRO?

dragy·Lap ships an update fortnightly, and JB4 PRO every 2 weeks. Most recently, dragy·Lap was updated on October 30, 2026 and JB4 PRO on October 30, 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.*