Comparison

iTSX vs JB4 Mobile

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

iTSX

Tune and monitor your vehicle's performance using your iPhone or iPad. This app requires a specific wireless OBD-II interface to adjust engine parameters, view real-time data, and run performance tests. It also allows for reading and clearing diagnostic trouble codes.

Highlights
  • Vehicle programming for performance gains
  • Pre-loaded dyno-proven tunes
  • Adjustable speed limiter
  • Virtual gauges and data monitoring
  • Record and review data logs
  • Performance tests (0-60, 1/4 mile)
  • Read and clear diagnostic trouble codes
Read full description

TUNE YOUR VEHICLE WITH YOUR iPHONE / iPAD! NOTE: This app requires the iTSX Wireless OBD-II Interface. Visit https://sctflash.com/Products/unfiltered-product/sct/SCTITSX/sct-itsx for more information. The iTSX App lets you control the vehicle-tuning and monitoring capabilities of the iTSX Wireless OBD-II Interface... the first & only “Made for iPod – iPhone – iPad” vehicle tuner & OBD-II monitoring product on the market. The iTSX Wireless OBD-II Interface plugs into your vehicle’s OBD-II diagnostic connector, and communicates with your Apple device via a secure Bluetooth wireless connection. When used with the iTSX Wireless OBD-II Interface, the iTSX App provides the following features: VEHICLE PROGRAMMING • Increase your vehicle’s Performance in Minutes • Works with 1996 - 2012 Ford Gas & Diesel vehicles • Works with popular GM vehicles (see What's New) • Pre-Loaded Dyno Proven Tunes for the Most Popular vehicles • Re-Calibrates the Vehicle using Bluetooth Wireless Technology • Ability to set your vehicle’s Speed Limiter for young drivers VIRTUAL GAUGES / DATA MONITORING / DATA LOGGING • On-Screen Virtual Gauges with Adjustable Warning / Alert lights • Monitor Vehicle Engine Data / Parameters via Virtual Gauges • Record & Review Recorded Data Logs • Huge Virtual Gauges on iPad VEHICLE PERFORMANCE TESTS • 0-60MPH Test: Virtual Speedometer & Graph with Estimated Horsepower • ET / MPH Test: 1/8th mile & 1/4 mile ET / MPH with Estimated Horsepower • Top Speed Test • Braking Test VEHICLE DIAGNOSTICS • Reads & Clears Vehicle Diagnostic Trouble Codes ( Check Engine Light ) • Diagnose your vehicle’s Diagnostic Trouble Codes using your mobile device

About

JB4 Mobile

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.

Highlights
  • Live gauge monitoring
  • Data logging and graphing
  • User adjustable settings
  • WMI settings modification
  • On-the-fly map switching
  • Code reading and deletion
Features
Read full description

The brand new JB4 Mobile application is finally ready for public release and has lots of great new features including: *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 JB4 Connect Kit Users: 1) Install the Connect Kit per the installation guide for your vehicle 2) Create your account/sign in with this app 3) Ensure JB4 Mobile has all requested permissions 4) Tap the Connect button in JB4 Mobile About The App: JB4 Mobile is a mobile data logger and display for use with the JB4 tuner from Burger Motorsports. JB4 Mobile allows you to monitor and log multiple parameters from your JB4 equipped car. Parameters such as boost, rpm, fuel trims, air/fuel ratios, ignition advance and much more are available. Current Features: Live gauges Data logging Data graphing Log export via email Code reading/deletion Modify User Adj. (boost, fuel, etc.) settings Modify WMI settings Switch maps on the fly Auto WOT logging JB4 Firmware Updating JB4 ® is a registered trademark of Burger Motorsports Inc ® and is used with written permission.

Screenshots

iTSX4 screens
JB4 Mobile4 screens

Verdict

The call

The clearest difference is price: iTSX at Free against JB4 Mobile's $27.99. iTSX also leads on iOS requirement (8.0 vs 15.1). JB4 Mobile's advantage is rating (3.8 vs 2.3) and review sentiment (52% vs 24%). On update cadence, ads, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

iTSX is free to download; JB4 Mobile costs $27.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

JB4 Mobile holds the better App Store score, 3.8 against 2.3. That said, the two scores are not equally well evidenced: JB4 Mobile has 239 ratings behind it against 44, so its average is the more settled of the two. Written reviews point the same way: 24% of iTSX's written reviews are positive against 52% of JB4 Mobile's.

UpkeepUpdate frequency

iTSX ships an update every 2 months, JB4 Mobile every 3 months. The most recent releases landed on October 12, 2026 and October 15, 2026 respectively.

Scorecard6 real differences · 5 level
iTSX versus JB4 Mobile: the parameters behind the verdict, then further details
ParameteriTSXJB4 Mobile
PriceFree — better$27.99
Rating2.3 (44 ratings)3.8 (239 ratings) — better
Positive reviews24.5% of reviews52.4% of reviews — better
Number of ratings44239 — better
Update frequencyEvery 2 months — betterEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
Best chart rank—#7 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.0 — better15.1
Further details — not scored
Size35 MB24 MB
Age rating4+4+
DeveloperSCT PerformanceDmac Mobile Developments, LLC

Customer experience

iTSX

All ratings44 ratings
Positive18.2%
Neutral25.0%
Negative56.8%
Written reviews49 reviews
Positive24.5%
Neutral22.4%
Negative53.1%

JB4 Mobile

All ratings239 ratings
Positive66.9%
Neutral12.1%
Negative20.9%
Written reviews145 reviews
Positive52.4%
Neutral13.1%
Negative34.5%

Bugs and requests

iTSX

Not enough reviews yet to summarise bugs or requests.

JB4 Mobile

Reported bugs

5 issues
  • App crashes
  • Can't connect to server
  • Mirrored/inverted display
  • Compatibility issues with new iOS versions
  • Trouble logging in

Requested features

5 requests
  • Add CarPlay support
  • Allow customizing map names
  • Add more gauge styling options
  • Improve UI and layout
  • Integrate with Apple Carplay

In-app purchases

None

iTSX

No in-app purchases

None

JB4 Mobile

No in-app purchases

Questions

Is iTSX free?
iTSX is free to download, with no in-app purchases.
Is JB4 Mobile free?
JB4 Mobile costs $27.99, with no in-app purchases.
Which has better reviews, iTSX or JB4 Mobile?
JB4 Mobile is rated higher. iTSX averages 2.3 out of 5 from 44 ratings, while JB4 Mobile averages 3.8 from 239 ratings.
Do iTSX or JB4 Mobile have ads?
Neither iTSX nor JB4 Mobile shows ads.
Which is updated more often, iTSX or JB4 Mobile?
iTSX ships an update every 2 months, and JB4 Mobile every 3 months. Most recently, iTSX was updated on October 12, 2026 and JB4 Mobile on October 15, 2026.

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