# iTSX

> Wireless OBD-II interface app for vehicle tuning, monitoring, and diagnostics. (iPhone/iPad app by SCT Performance.)

- Source: https://appshunter.io/ios/app/itsx/id461100848 (this page in markdown: same URL + `.md`)
- Developer: [SCT Performance](https://appshunter.io/developer/461100851)
- Category: Sports, Utilities
- Price: Free
- Rating: 2.30/5 from 44 App Store ratings · 49 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 35 MB
- Languages: American English
- Released: 2011-09-30
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/itsx/id461100848/reviews.md

## What is iTSX?

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

## Key features

- 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

## Recent user reviews (10 of 49)

All indexed reviews: https://appshunter.io/ios/app/itsx/id461100848/reviews.md

### 2/5 — App works well well with OLD devices

*2024-09-11, version 1.9*

After writing a negative review from trying to use my device. I decided to try with an old phone I had that no longer receives updates. App worked flawless with the old phone.  

I have used the app with my new phone. iPhone 12 mini. But after a couple years the 12 mini no longer worked with the app.

Hope this helps. Still don’t recommend the app. But this might make it possible to use for some.

Kenny

### 1/5 — Outdated

*2024-03-02, version 1.9*

I almost never leave app reviews but this one is junk. I had this on a 2005 Mustang GT and the unit itself died, luckily SCT sent another. The app barely works at this point, and now on my 2010 Explorer I can get it returned to stock because every time I click “program” the app locks up and freezes. Junk.

### 1/5 — Waste of $$

*2023-12-17, version 1.9*

This is the worst app/ tuner. Never connects and when it does it takes 15 mins and you have to “forget” the Bluetooth device every time to reconnect and reset the device. Such a waste of $$$

### 1/5 — Nothing but problems from day one

*2021-07-31, version 1.9*

Been fight with this thang for year. Now got no light, it use to be bad enough repairing resetting over and over. So much money feel down drain. Can’t get any help, wish they would give me back money or replace with one they know works. So disappointed also click last thing app support goes to page that does not 
Exist

### 1/5 — Can not get tune to load!

*2021-04-21, version 1.9*

Called and was told by automated message that it was a 2hr wait! How do they still sell these! Wish I had done some research!

### 4/5 — Vehicle weight

*2021-04-13, version 1.9*

It won’t let me change my vehicle Weight, please fix, and it’s not giving me accurate horsepower and torque numbers

### 1/5 — Derive app is horrible as is this

*2020-05-17, version 1.9*

I have the x4 tuner not sure at this point of tuner is just a horrible unit itself or if the only apps available to run it are the problem but I can’t get it to connect to any of my iPhones or iPad. It works fine on computer but I can’t drag my pc out to the car . The derive app o can’t even locate to add to my phone e to see if it will work there. It this app doesn’t do anything . Waste of money and never will get another

### 1/5 — Needs updates

*2019-03-23, version 1.9*

App shuts down every time gives me hell to connect the device and every time it fines a code unable to see the code apl just freezes over you have to close it to be able to work with it again app really needs an update completely put of date and issues still pending on app.

### 3/5 — App crashes

*2018-07-31, version 1.9*

Whenever I try to view saved data files, the app crashes. Tuning feature works great, but sometimes the phone doesn’t connect to the tuner and I have to forget it on the Bluetooth menu and reconnect it

### 1/5 — For $399 this *should* be better than it is

*2018-05-10, version 1.9*

Free app, but if you’re shelling out $399 for tuner one expects more than just a file upload and ECU flash utility - and that’s basically all this is.  There is little to no documentation on how to use the other available portions of the app to address the timer.  Update firmware for the tuner doesn’t work.  It’s really sad and disappointing.  I’ll likely never buy another SCT product because of how this is not supported and my last experience with their RMA & Tech support processes.  Just save yourself the aggravation and pound sand - at least that’s priced appropriately.

## Frequently asked questions about iTSX

### What does the iTSX app do?

The iTSX app allows you to control the tuning and monitoring capabilities of the iTSX Wireless OBD-II Interface. You can increase your vehicle's performance, monitor engine data through virtual gauges, run performance tests, and read or clear diagnostic trouble codes.

### What hardware do I need to use iTSX?

This app requires the iTSX Wireless OBD-II Interface to function. This interface plugs into your vehicle's OBD-II diagnostic connector and communicates wirelessly with your Apple device via Bluetooth.

### What vehicles are compatible with iTSX?

The app works with 1996-2012 Ford Gas & Diesel vehicles and popular GM vehicles. Specific compatibility for GM vehicles can be found in the app's 'What's New' section.

### Can I set a speed limiter with this app?

Yes, the app provides the ability to set your vehicle's speed limiter. This feature can be particularly useful for young drivers.

### How can I monitor my vehicle's performance?

You can monitor your vehicle's engine data and parameters in real-time using on-screen virtual gauges with adjustable warning lights. The app also allows you to record and review data logs for later analysis.

## Version history (last 5 releases)

### 1.9 — 2017-09-19

This app has been updated by Apple to display the Apple Watch app icon.

64-bit support

### 1.8 — 2013-08-22

1. Improved Bluetooth wireless communication.
2. Added support for iPhone 5 display resolution.
3. Added export capabilities to Vehicle Info and iTSX Info menus.
4. Improved vehicle data logging to include logging of additional data parameters.
5. Improved vehicle programming, data logging and custom tune importing via email.

### 1.7 — 2012-11-02

-Fixes communication timeout issues
-Added ability for app to run in the background when interrupted (iOS 5+)
-Various Bug Fixes

### 1.6 — 2012-07-03

- Added support for metric units
- Updated data logging configurations

### 1.5 — 2012-05-15

-Support for the following GM vehicles pre-loaded
2005-2006 GTO
2005-2006 SSR
2008-2009 G8 GT & GXP
2005+ Corvette
2010 + Camaro
2006-2009 Trail Blazer SS
2008-2009 Hummer H2
2007+ Silverado/Sierra (* new body style only)
2007+ Tahoe/Yukon, Suburban, Yukon XL, Escalade, Avalanche
2006-2010 Duramax (LBZ and LMM only)

## Apps similar to iTSX

| App | Rating | Price | Category |
| --- | --- | --- | --- |
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## More apps by SCT Performance

- [Derive VQ Driver](https://appshunter.io/ios/app/derive-vq-driver/id1339204764)

All apps by SCT Performance: https://appshunter.io/developer/461100851

## Related topics

[sct performance](https://appshunter.io/ios/topics/sct-performance)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*