JB4 Mobile

Name: JB4 Mobile
Rating: 3.8 (239 reviews)
Author: Dmac Mobile Developments, LLC

by Dmac Mobile Developments, LLC

iPhone · iPad

Active Last checked 31 Jul 2026

App Store ↗

Quick verdict

What it is: Store information collected; independent summary not yet available.
At a glance: $27.99

Categories and search queries

Official categories

Sports
Travel

AppCorpus categories

Key functions

Function	Availability	Access	Scope	Evidence
Family Sharing	Yes	Unknown	App Store	Store published

Screens

No screenshots collected yet.

Pricing & paywalls

App Store

Price: $27.99

Last verified 31 Jul 2026

Ratings & reviews

App Store

3.8 239 ratings · App Store

5/5Good support
I like the guys over at burger. They are pretty responsive on the forums and provide continuous support for the app. Just send them your logs on the forum and they will help you as best as they can. The module is a boost controller so much of the tuning will be dependent on the fueling, spark plugs, and small adjustments in the app. It’s basically the same stuff bmw is keeping from you behind a paywall. After all their engines are b48s,b58s and for the big spenders s55s . This beat paying bmw an extra 10k - 15k for a trim and horsepower increase.

A disappointed idealist · 31 Jul 2026
3/5Just downloaded and not happy
Purchased the app a few years back when I worked for a BMW performance shop and hadn’t used it in quite some time. Downloaded today so I could interface with my wife’s car and I have to pay for an app I’ve already purchased once?! The whole reason I paid for it the first time was so I could use it when I wanted. Honestly you’d think if you bought a $500+ programmer and paid the extra for Bluetooth connectivity bringing the total over $700 the app would come with it.

nasty610 · 31 Jul 2026
4/5Screen turns off on iOS26
Couldn't find another way to reach out to the developer. The app works fine, however since updating to iOS 26, it no longer keeps the screen on when you're using the gauges, which defeats the purpose of gauges. On previous iOS versions, the app would keep the screen on and the phone unlocked while using it so you could view the gauges and record logs. Please get this fixed or add a setting to force the screen to stay on!

Schwibbles · 31 Jul 2026
5/5Incredible Support
First of all, having Bluetooth connectivity for the JB4 has been a valuable enhancement. When I had a problem with the BT hardware, I sent the unit to Donnie and after a few email exchanges, he fixed the problem and sent me a replacement unit. The app quality is outstanding and support all the more so. It is amazing that there is such an outstanding product for a niche application. Just get it! If you already made the plunge to get a JB4, the Bluetooth interface will greatly enhance your investment.

FallbrookMac · 31 Jul 2026
5/5New Stinger User Suggestion
So far I really like the app and the JB4. The app connects quickly via Bluetooth and I haven’t had one issue after a week of use. Something I’d like to see is multiple gauge screens to scroll through, similar to the Ultra Gauge app if anyone is familiar. That way, my most used gauges are on the first page and gauges I reference less like map, temps and waste gate data could be easily accessed by a swipe rather than having to temporarily reset a more utilized gauge.

Taco197 · 31 Jul 2026

Privacy & accessibility

App Store

Privacy

Data Linked to You — App Functionality — Contact Info — Email Address Developer declared
Data Linked to You — App Functionality — Diagnostics — Crash Data Developer declared
Data Linked to You — App Functionality — Location — Precise Location Developer declared
Data Linked to You — App Functionality — User Content — Customer Support Developer declared
Data Linked to You — Contact Info Developer declared
Data Linked to You — Diagnostics Developer declared
Data Linked to You — Location Developer declared
Data Linked to You — User Content Developer declared

Accessibility

No accessibility labels collected yet.

Versions

App Store

2.3.7
Fixed 'Load Config' button. Updates to various engine types.
2.3.8
FUD bit parameter updates.
2.3.9
Added ability to import csv files (JB4 Logs) via email. Minor graphing bug fixes. Minor code reading updates. Engine type updates.
2.4.0
Minor graphing changes. Platform updates.
2.4.1
*New Feature* JB4 Firmware Manager - You can now find the latest JB4 firmware updates quickly and easily via the new interface. Increased tuning limits for some platforms. Various bug fixes/behind-the-scenes updates.
2.4.2
*New Feature* JB4 Firmware Manager - You can now find the latest JB4 firmware updates quickly and easily via the new interface. Increased tuning limits for some platforms. Bug fixes for registration page.
2.4.3
Minor bug fixes.
2.4.4
Rev 3.7 Firmware Updates. Updated JB4 Firmware Update page.
2.4.5
Minor logging updates. Fixed log preview page. Various firmware update fixes.
2.4.6
Minor updates to Rev 3.7 kit connectivity.
2.5
New firmware recovery logic. Reworked log grouping mechanism. Note that log-grouping is required by BMS for log review.
2.5.1
UI updates. Minor bug fixes.
2.5.2
Updates to engine type detection. Minor tweaks to UI flow in settings pages. Updated iPad UI in certain areas.
2.5.3
Fix for iOS 14.6 locale bug (international customers).
2.5.4
More updates to code databases.
2.5.5
Changes to some unit conversion functions. Updates for Connect Kit firmware detection. Updates for UI scaling (Pro Max devices).
2.5.6
Cert updates.
2.5.7
Minor bug fixes.
2.5.8
Minor bug fixes.
3.0.2
*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
3.0.3
Updated JB4 boost scalars. Updated Email handling. Updated default themes. Added CANFlap and Map gauges.
3.0.4
Updates to theme editor. Updates to User Adj/WMI saving. Minor error message updates.
3.0.5
Map and manual Log button now only appear once connected. Log/firmware import now auto-refresh file list.
3.0.6
Map and manual Log button now only appear once connected. Log/firmware import now auto-refresh file list. Minor bug fixes.
3.0.7 · 8 Jan 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.

Show more Show less

Alternatives

JB4 PRO — Same category + similar ratings
EK1 Tuning cloud — Same category + similar ratings

Availability by market

Data quality & evidence

Page completeness: Live store listing
Last verified: 31 Jul 2026
Sources: App Store

Independent summary has not been published yet.
Screenshots: not yet collected

Report a correction

Use this page with an AI agent

AppCorpus MCP gives your agent current app data, prices, screens, features and sources.

Example prompt

Compare JB4 Mobile with JB4 PRO.

View JSON

GET /api/v3/apps/794841332

{
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        {
          "rating": 5,
          "title": "Good support",
          "body": "I like the guys over at burger. They are pretty responsive on the forums and provide continuous support for the app. Just send them your logs on the forum and they will help you as best as they can. The module is a boost controller so much of the tuning will be dependent on the fueling, spark plugs, and small adjustments in the app. It’s basically the same stuff bmw is keeping from you behind a paywall. After all their engines are b48s,b58s and for the big spenders s55s . This beat paying bmw an extra 10k - 15k for a trim and horsepower increase.",
          "author": "A disappointed idealist",
          "date": "31 Jul 2026"
        },
        {
          "rating": 3,
          "title": "Just downloaded and not happy",
          "body": "Purchased the app a few years back when I worked for a BMW performance shop and hadn’t used it in quite some time. Downloaded today so I could interface with my wife’s car and I have to pay for an app I’ve already purchased once?! The whole reason I paid for it the first time was so I could use it when I wanted. Honestly you’d think if you bought a $500+ programmer and paid the extra for Bluetooth connectivity bringing the total over $700 the app would come with it.",
          "author": "nasty610",
          "date": "31 Jul 2026"
        },
        {
          "rating": 4,
          "title": "Screen turns off on iOS26",
          "body": "Couldn't find another way to reach out to the developer. The app works fine, however since updating to iOS 26, it no longer keeps the screen on when you're using the gauges, which defeats the purpose of gauges. On previous iOS versions, the app would keep the screen on and the phone unlocked while using it so you could view the gauges and record logs. Please get this fixed or add a setting to force the screen to stay on!",
          "author": "Schwibbles",
          "date": "31 Jul 2026"
        },
        {
          "rating": 5,
          "title": "Incredible Support",
          "body": "First of all, having Bluetooth connectivity for the JB4 has been a valuable enhancement. When I had a problem with the BT hardware, I sent the unit to Donnie and after a few email exchanges, he fixed the problem and sent me a replacement unit. The app quality is outstanding and support all the more so. It is amazing that there is such an outstanding product for a niche application. Just get it! If you already made the plunge to get a JB4, the Bluetooth interface will greatly enhance your investment.",
          "author": "FallbrookMac",
          "date": "31 Jul 2026"
        },
        {
          "rating": 5,
          "title": "New Stinger User Suggestion",
          "body": "So far I really like the app and the JB4. The app connects quickly via Bluetooth and I haven’t had one issue after a week of use. Something I’d like to see is multiple gauge screens to scroll through, similar to the Ultra Gauge app if anyone is familiar. That way, my most used gauges are on the first page and gauges I reference less like map, temps and waste gate data could be easily accessed by a swipe rather than having to temporarily reset a more utilized gauge.",
          "author": "Taco197",
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      "released_at": null,
      "notes": "FUD bit parameter updates."
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      "version": "2.4.0",
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      "version": "2.4.1",
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  "alternatives": [
    {
      "app_id": 6746129072,
      "name": "JB4 PRO",
      "url": "https://appcorpus.com/apps/jb4-pro-6746129072",
      "reason": "Same category + similar ratings"
    },
    {
      "app_id": 6686403255,
      "name": "EK1 Tuning cloud",
      "url": "https://appcorpus.com/apps/ek1-tuning-cloud-6686403255",
      "reason": "Same category + similar ratings"
    }
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