# JB4 Mobile

> Sports

Canonical page: [https://chrome-stats.com/d/id794841332](https://chrome-stats.com/d/id794841332)

## Overview

- **ID:** `id794841332`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Dmac Mobile Developments, LLC
- **Category:** Sports
- **Rating:** 3.80 / 5 (239 ratings)
- **Version:** 3.0.7
- **Last updated:** 2026-01-08
- **First published:** 2014-02-12
- **Size:** 24 MB
- **Data as of:** 2026-09-18
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/jb4-mobile/id794841332)
- **Website:** [https://www.jb4tech.com/forum/model-specific-engine-tuning-modification-discussion/jb4-mobile/1192-](https://www.jb4tech.com/forum/model-specific-engine-tuning-modification-discussion/jb4-mobile/1192-)
- **Privacy policy:** [https://app.termly.io/document/privacy-policy/78ba720b-3a1e-4062-a6d2-409fa6ed0e15](https://app.termly.io/document/privacy-policy/78ba720b-3a1e-4062-a6d2-409fa6ed0e15)

## Description

JB4 Mobile is the latest mobile data logger and display for Burger Motorsports' JB4 tuner. This release brings gauge theme customization, a built-in raw CSV viewer, revamped User Adj. and WMI editors, and a modern UI rebuilt from the ground up with tighter backend integration.

Use JB4 Mobile to monitor and log a wide range of parameters (boost, RPM, fuel trims, air/fuel ratios, ignition advance) with live gauges, graphing, and easy log export. Features include code reading/deletion, modifying User Adj. and WMI settings, on-the-fly map switching, Auto WOT logging, and JB4 firmware updating. The app works with JB4 Connect Kit for vehicle setup and seamless data access.

## Rankings

- #105,255 — Overall
- #4 — Sports (Paid)

## Review summary

JB4 Mobile is praised for its feature-rich gauges, real-time data, and strong JB4 hardware integration, plus a supportive community. However, recurring issues include iOS 26 causing the screen to sleep, connectivity/logging problems after updates, mandatory UI changes that remove customization, and ongoing requests for CarPlay support; licensing concerns about repurchasing the app.

### Pros

- Feature-rich capabilities including gauges, real-time data, logs, and map switching.
- Real-time gauges and comprehensive logs provide valuable feedback.
- Strong JB4 hardware integration allowing on-the-fly tuning.
- Responsive community/support forums for help.

### Cons

- iOS 26: screen keeps turning off or auto-locks during gauge use; no fix or setting.
- Connectivity and logging issues after updates; cannot connect or download logs.
- Mandatory updates that drastically change the UI and remove customization; users want option to stay with previous version.
- Lack of CarPlay integration; users want CarPlay support.
- Need to repurchase or re-license the app after changing devices.

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Source: [Chrome-Stats](https://chrome-stats.com/d/id794841332)