iTSX vs JB4 Mobile
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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
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.
- Live gauge monitoring
- Data logging and graphing
- User adjustable settings
- WMI settings modification
- On-the-fly map switching
- Code reading and deletion
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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
Verdict
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
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.
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.
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.
| Parameter | iTSX | JB4 Mobile |
|---|---|---|
| Price | Free — better | $27.99 |
| Rating | 2.3 (44 ratings) | 3.8 (239 ratings) — better |
| Positive reviews | 24.5% of reviews | 52.4% of reviews — better |
| Number of ratings | 44 | 239 — better |
| Update frequency | Every 2 months — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Best chart rank | — | #7 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 35 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | SCT Performance | Dmac Mobile Developments, LLC |
Customer experience
iTSX
JB4 Mobile
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
iTSX
No in-app purchases
JB4 Mobile
No in-app purchases








