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JB4 Mobile

JB4 Mobile

by Dmac Mobile Developments, LLC

234 ratings
145 reviews
#6 in paid Sports
✈️ Travel
⚽ Sports
$27.99

Details

  • Released
  • Updated
  • February 12, 2014
  • January 8, 2026

Features

Developer

Dmac Mobile Developments, LLC
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JB4 Mobile screenshot #1 for iPhone
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JB4 Mobile screenshot #3 for iPhone
JB4 Mobile screenshot #4 for iPhone
JB4 Mobile screenshot #5 for iPhone
JB4 Mobile screenshot #6 for iPhone
JB4 Mobile screenshot #7 for iPhone
iphone
ipad
📉no. 6
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Reviews summary↘︎
⭐145
Reviews↘︎
📝4+ tags
Tags↘︎
🔄6+ apps
Alternatives↘︎
❓5 answered
FAQ↘︎
📦~ in 2 months
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About

This app acts as a mobile data logger and display for vehicles equipped with a JB4 tuner. It allows users to monitor and log various engine parameters, view data in real-time, and adjust settings for performance tuning.

✓Live gauge monitoring
✓Data logging and graphing
✓User adjustable settings
✓WMI settings modification
✓On-the-fly map switching
✓Code reading and deletion
Show original description

What users say

Summarized from real user reviews of JB4 Mobile. Based on 234 reviews and a 3.8/5 average, it highlights the 5 positives and 6 negatives reviewers mention most about this Sports app.

Positive things

  • 🚀Great app and a must have with the JB4
  • 🔒Robust security features
  • 👍Awesome data logging
  • 👍Incredible Support
  • 👍Works as expected

Negative things

  • 🐛Doesn't work properly, screen upside down and backwards
  • 🐛Stopped working after update
  • 🐛Bluetooth connection issues
  • 🐛Gauges freezing
  • 🐛Screen turns off
  • 🐛Constant disconnecting
See all reviews

What's New in JB4 Mobile

3.0.7

January 8, 2026

Bug Fix: Viewing User Adj in landscape orientation Bug Fix: Viewing graph with incompatible parameters. Minor changes to firmware uploading to make it faster.

More

Charts

Top Paid

📉 6-2

Sports

This app dropped -2 positions in Sports chart.

Last updated on July 19, 2026.

User reviews

Most RecentHighest RatedLowest Rated

Connectivity issues

Constant connectivity issues, and they clearly never update and debug.
LivinginadigitalprisonLivinginadigitalprison

Don’t work new version

All new version don’t connect with old version jb4 kit . What can I do ?
Kot31Kot31

Wrong app for new bt adaptor

Wrong app get jb4 pro!
Miltonr555Miltonr555

Did not work

I couldn’t get it to connect. I cannot find any way to contact Support. The regular JB4 PRO app works fine wirelessly.
Garett FinneyGarett Finney

Gauges freezing

I actually love the app and the capabilities are nice. You can do a lot. My problem is the app keeps freezing when u have the gauges open after doing a pull. I have to toggle to the maps menus and than back to gauges for them to show live feedback again. Maybe this is something I can change in settings??? If so would change to 4 star review
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Yoyoyo what up broYoyoyo what up bro
See 140 more reviews

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User experience

🐞

Reported Bugs

5 issues

App crashes

Bug

Can't connect to server

Bug

Mirrored/inverted display

Bug

Compatibility issues with new iOS versions

Bug

Trouble logging in

Bug
✨

Requested Features

5 requests

Add CarPlay support

Feature

Allow customizing map names

Feature

Add more gauge styling options

Feature

Improve UI and layout

Feature

Integrate with Apple Carplay

Feature

FAQ

What does the JB4 Mobile app do?

The JB4 Mobile application serves as a mobile data logger and display for vehicles equipped with the JB4 tuner from Burger Motorsports. It enables users to monitor and log numerous parameters from their JB4-equipped car, such as boost, RPM, fuel trims, and air/fuel ratios.

What are the key features of JB4 Mobile?

Key features include live gauge monitoring, data logging and graphing, the ability to read and delete diagnostic codes, modify user-adjustable settings like boost and fuel, adjust WMI settings, and switch maps on the fly. It also supports auto WOT logging and JB4 firmware updating.

Is JB4 Mobile free to use?

Based on the provided information, the JB4 Mobile application is available for free. There are no mentions of in-app purchases or advertisements, suggesting a completely free user experience.

What vehicles is JB4 Mobile compatible with?

The app is designed for use with vehicles equipped with the JB4 tuner from Burger Motorsports. Users will need to have the JB4 Connect Kit installed in their vehicle to utilize the app's full functionality.

How can I use JB4 Mobile to tune my car?

JB4 Mobile allows for performance tuning by enabling users to modify user-adjustable settings such as boost and fuel levels, and adjust Water Methanol Injection (WMI) settings. You can also switch between different performance maps directly from the app.