JB4 Mobile is a data logger and display for use with the JB4 tuner.
Pros & Cons
Tight JB4 ecosystem integration (live gauges, logging, and editing)
On-the-fly map switching and firmware updating streamline tuning workflows
Data export via email enables easy sharing and analysis
Comprehensive feature set including Live Gauges, Data Graphing, and code reading/deletion
Competitors may highlight broader Bluetooth/BLE scanning and device-scanner capabilities not prominently advertised here
Some users may prefer more universal scanning features outside the JB4-specific workflow
The app relies on location permissions for BLE on some devices, which could impact privacy considerations for some users
About JB4 Mobile
JB4 Mobile is a sports app developed by Dmac Mobile Developments, LLC.
How many times has JB4 Mobile been downloaded?
JB4 Mobile has been downloaded 53 thousand times. In the last 30 days, the app was downloaded 340 times. It is ranked #2 in sports.
What is the rating of JB4 Mobile?
JB4 Mobile is rated 3.60 out of 5 stars, based on 700 ratings.
Is JB4 Mobile free?
JB4 Mobile costs $27.99 to download. The APK download size is 28.69 MB. The latest version available is 3.0.7. The last update was on November 25, 2025.
What are the requirements for JB4 Mobile?
JB4 Mobile requires Android 4.3+ or higher. The app has a content rating of Everyone. The app has been available on Google Play April 2014.
Description
The brand new JB4 Mobile application is finally ready for public release and has lots of great new features including: *Gauge theme customizations *Built-in raw CSV data viewer *Revamped User Adj./WMI data editors *New modern UI completely rewritten from the ground up *More seamless integration with our backend servers
JB4 Connect Kit Users: 1) Install the Connect Kit per the installation guide for your vehicle 2) Create your account/sign in with this app 3) Ensure JB4 Mobile has all requested permissions and that location services are enabled (required for BLE scanning on some devices) 4) Tap the Connect button in JB4 Mobile
BMS Data Cable Users: 1) Select the OTG option in Settings Tab->Advanced->Connection 2) Connect the OTG cable to your phone/tablet BY ITSELF 3) Connect the BMS Data Cable to the OTG cable 4) Tap the Connect button in JB4 Mobile
About The App: JB4 Mobile is a mobile data logger and display for use with the JB4 tuner from Burger Motorsports.
JB4 Mobile allows you to monitor and log multiple parameters from your JB4 equipped car. Parameters such as boost, rpm, fuel trims, air/fuel ratios, ignition advance and much more are available.
Current Features: Live gauges Data logging Data graphing Log export via email Code reading/deletion Modify User Adj. (boost, fuel, etc.) settings Modify WMI settings Switch maps on the fly Auto WOT logging JB4 Firmware Updating
JB4 ® is a registered trademark of Burger Motorsports Inc ® and is used with written permission.
Recent changes: Bug Fix: Viewing User Adj in landscape orientation Bug Fix: Viewing graph with incompatible parameters.
Minor changes to firmware upload to make them faster.
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Why must location services be enabled to connect with latest update? Great customer support!
★★★★☆Won T. Tree· Nov 1, 2024
This just started happening yesterday. I am not able to update to connect kit to the new firmware.
★★★★★Xavier Z· Sep 19, 2025
The app and the tuner both work great. Never had issues with BT connection or gauges not working, never ever, not even single time.
★★☆☆☆QNS· May 13, 2023
Update says fix for previewing csv file. Instead of that, the opposite was done. Not able to view logs on the app any more like I usually did, now the log has to be emailed and opened another way
★★☆☆☆Ryan· Sep 15, 2024
The hardware I'm a little disappointed in. $150 for a BT dongle is overpriced imo, so I opted to hook up an OTG cable to use the app. I am required to unhook the otg from the Jb4, then plug the phone in, and plug the Jb4 back in each time. This is not ideal since I've mapped the cables including the OTG connection under the hood. Overall the Jb4 is a bit pricey, but works well. The app, IDK... I would have just purchased a tune if I knew I'd spend over $700 allin for seamless app connectivity.
★☆☆☆☆Joe Mcdolens· Apr 17, 2022
I have this for my mk7 gti and although the tune is working fine the app itself chooses when it wants to work and for how long it won't connect, or it says it does but won't show ANY information
★★☆☆☆Lee T· Oct 31, 2024
Not sure what happened with this latest update, but I just wanted to work when I turn it on, and it connects to my jb4. Now I only have one choice for a color scheme on my gauges and when I have the gauges on they don't stay on. They time out with my phone and shut off. The previous Edition would stay on if you had the gauges up.
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