JB4 Mobile is made and published by Dmac Mobile Developments, LLC. AppBrain is an independent app data site and isn't affiliated with Dmac Mobile Developments, LLC. The app name, icon, screenshots and description belong to Dmac Mobile Developments, LLC and are shown as published on Google Play.

Summary

JB4 Mobile is a dedicated data logger and display for the JB4 tuner ecosystem, delivering live gauges, robust data logging, and on-device editors for boost, fuel, and WMI. It holds top regional rankings in SPORTS (CA and AU rank #1; US rank #2) and leverages a broad user base, with 50,000+ total downloads and 340 in the last 30 days.

Pros & Cons

Tight JB4 ecosystem integration (Connect Kit and BMS Data Cable)
Rich data capabilities: live gauges, logging, graphs, and CSV viewer
On-device tuning controls: User Adj./WMI edits and real-time map switching
Strong regional leadership in SPORTS across multiple markets

Requires JB4 hardware to unlock full functionality
Initial setup can be technical, involving Connect Kit and OTG wiring steps
Premium price point may deter some potential users (price: $27.99)

About JB4 Mobile

JB4 Mobile is a sports app developed by Dmac Mobile Developments, LLC.

Install Statistics

JB4 Mobile has been installed 55 thousand times. In the last 30 days, the app was installed 340 times.

User Ratings

JB4 Mobile is rated 3.56 out of 5 stars. The rating is based on 710 ratings.

App Information

JB4 Mobile costs $27.99. The app size is 28.18 MB. The latest version available is 3.0.5. The last update was on November 25, 2025.

Technical Requirements

JB4 Mobile requires Android 4.3+ or higher. The app has a content rating of Everyone. The app has been available on Google Play since April 2014.

Description by Dmac Mobile Developments, LLC (from Google Play)

The brand new JB4 Mobile application is finally ready for public release and has lots of great new features including:

More data about JB4 Mobile

Price	$27.99
Total installs	55 thousand
Recent installs	340
Rating	3.56 based on 710 ratings
Ranking	Not ranked
Version	3.0.5
App size	28.2 MB
Number of libraries	15
Designed for Android	4.3+
Suitable for	Everyone
Ads	No ads

App Performance Report

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Screenshots

Screenshots by Dmac Mobile Developments, LLC, from the Google Play listing

Official page on Google Play

Alternatives to JB4 Mobile

Google Play Rating history and histogram

370

160

Installs over time

JB4 Mobile has been installed 55 thousand times. Over the past 30 days, it averaged 11 installs per day.

Changelog of JB4 Mobile

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Developer information for Dmac Mobile Developments, LLC

Dmac Mobile Developments, LLC

support2@jb4connectkit.com

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Comments on JB4 Mobile for Android

★★★★★ Rushan Soubar · Jan 3, 2025

Been using the JB4 and JB4 Mobile since the early days, it's amazing feature that provides monitoring, logging and adjustments in easy user-friendly interface, the support of the team always exceed the expectations, and they go above and beyond to make sure everything works perfectly, it's an amazing product with exceptional true after sales and support. Highly recommend them without hesitating 👌 👍

★★★★☆ 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

★★☆☆☆ Tony J · Apr 2, 2026

I need this app to use my JB4 tune. Cannot use it without it. It works as described. Thus, 2 stars. But, it is an expensive app after buying an expensive JB4 tuner what bothers me the most is I paid $27.99 for them to harvest my data and "Share it with their partners". I should get a cut of that.action. Instead I am PAYING them to sell my data. Before you know it, it is resold to LexisNexis who sells data to insurance companies. So they can find reasons to increase premiums.

★★☆☆☆ 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

★☆☆☆☆ Squigglylinezz · Feb 18, 2022

App is nice when I can actually use it. When connected it never wants to read any of the gauges besides boost, it randomly starts "logging" but won't turn off, and it won't read codes. If everything worked they way it should the app would be phenomenal. It's kinda disappointing that I paid like $20 for an app to have the ability to read gauges, data log, scan and clear codes but the only way I can get it to work is by uninstalling the app and then reinstalling.

Google Play Rankings for JB4 Mobile

This app is not ranked

Technologies used by JB4 Mobile

17 permissions · 15 libraries

Subscribe to see full permission and library details

Trust & Safety: The app requests a broad set of permissions (location, network, Bluetooth, storage, foreground service, license check) to enable BLE scanning, device connections, data logging, and license verification. A Dynamic Receiver permission is noted. There are no camera or microphone permissions. Users should review requested permissions, ensure they obtain JB4-related content from trusted sources, and keep the app updated to mitigate security risks.

Frequently asked questions about JB4 Mobile

Is JB4 Mobile free?

No. JB4 Mobile costs $27.99 on Google Play.

Is JB4 Mobile still available?

Yes. JB4 Mobile is on Google Play, and the last update we saw was on November 25, 2025.

Does JB4 Mobile contain ads?

No. Google Play does not list JB4 Mobile as containing ads.

What Android version does JB4 Mobile require?

JB4 Mobile runs on Android 4.3 and higher.

How large is JB4 Mobile?

JB4 Mobile is 28.18 MB.

Is JB4 Mobile suitable for children?

Google Play rates the content of JB4 Mobile as suitable for everyone.

How many times has JB4 Mobile been installed?

Google Play lists 50,000+ installs for JB4 Mobile.

How do people rate JB4 Mobile?

JB4 Mobile scores 3.56 out of 5 stars, from 707 ratings on Google Play.

Who made JB4 Mobile?

JB4 Mobile was developed by Dmac Mobile Developments, LLC. It is listed in the sports category on Google Play.

What are the best alternatives to JB4 Mobile?

People looking at JB4 Mobile also look at these sports apps: JB4 PRO, ScanM5X Data Logger, Thingsup BLE Beacon Scanner an, Simplicity Connect, NanoBeacon BLE Scanner.

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