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Best Jb4 Apps

248+ iOS apps curated and reviewed

4.3 avg rating
18 free apps
Updated September 2026

From beginner-friendly picks to power-user tools, our jb4 list covers 248+ iPhone apps updated through September 2026. Compare ratings, prices, and screenshots in one place.

Compare top Jb4 Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1JB4 MobileJB4 Mobile$27.993.8★ (239)NoNoAug 2026
2JB4 PROJB4 PROFree4.4★ (14)NoNoSep 2026
3dragy Connectdragy ConnectFree2.5★ (8)NoNoSep 2026
4JBL HeadphonesJBL HeadphonesFree4.7★ (130K)NoNoSep 2026
5JBL PortableJBL PortableFree4.7★ (59K)NoNoSep 2026
6CANflexCANflexFree—NoNoMay 2026
7JB GOJB GOFree2.7★ (7)NoNoMay 2026
8The JB SuperFan AppThe JB SuperFan AppFree4.7★ (3)NoNoMay 2026

Top Picks for Jb4

JB4 Mobile#1

JB4 Mobile by Dmac Mobile Developments, LLC

Editor's Choice
⚽ Sports
3.8😐(239 ratings)
$27.99
#5in Sports
JB4 Mobile screenshot 1
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JB4 Mobile screenshot 6

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.

What We Love

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

Room to Improve

  • 🐛 Doesn't work properly, screen upside down and backwards
  • 🐛 Stopped working after update
  • 🐛 Bluetooth connection issues
  • 🐛 Gauges freezing
  • 🐛 Screen turns off
  • 🐛 Constant disconnecting
dragy Connect#3

dragy Connect by Harbin Qirui Technology Company With Limited Liability.

Worth Considering
⚽ Sports
2.5😞(8 ratings)
Free
dragy Connect screenshot 1
dragy Connect screenshot 2
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dragy Connect screenshot 5

This GPS-based performance meter allows users to track various acceleration metrics like 0-60mph and 1/4 mile times. It enables sharing performance data on leaderboards and videos with real-time overlays. A dedicated hardware device is required for testing.

What We Love

  • 🚀 Accurate measurements
  • 👍 Easy to use
  • 🚀 Compact and lightweight device
  • 🚀 Great performance tracking tool

Room to Improve

  • 🐛 Frequent app crashes
  • 🐛 Connectivity issues (no internet connection)
  • 🐛 Leaderboard and data upload problems
  • 🔇 Annoying voice announcements
  • 🔋 Inconsistent satellite connection
  • 🔇 Ads in the paid app

More Jb4 apps to explore

FAQ about Jb4

What are the best jb4 apps for iPhone?
JB4 Mobile tops our jb4 apps ranking as of September 2026, with a 3.8-star average from 239 App Store ratings, and it's priced at $27.99.
Yes — 18 of the top jb4 apps we rank are free to download, including JB4 PRO and dragy Connect.
JB4 Mobile has no ads and has no in-app purchases, according to its App Store listing as of September 2026.
We track 248+ jb4 apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
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.
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.