# Cummins Guidanz

> Cummins service and diagnostic tool for equipment repair and uptime. (iPhone/iPad app by Cummins Inc..)

- Source: https://appshunter.io/ios/app/cummins-guidanz/id1184579875 (this page in markdown: same URL + `.md`)
- Developer: [Cummins Inc.](https://appshunter.io/developer/500176910)
- Category: Utilities
- Price: Free
- Rating: 3.10/5 from 49 App Store ratings · 9 written reviews indexed
- Age rating: 4+
- Requires: iOS 18.0 · 365 MB
- Languages: American English, Canadian French, Chinese (Simplified, China), Latin American Spanish
- Released: 2017-05-05
- Data updated: 2026-08-18
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/cummins-guidanz/id1184579875/reviews.md

## What is Cummins Guidanz?

Cummins Guidanz™ is a new suite of genuine service products, features and capabilities available from Cummins. Visit https://www.cummins.com/parts-and-service/digital-products-and-services/guidanz to learn more about Guidanz.

The Guidanz mobile app helps you speed up the repair process and improve customer uptime. Among the features are the following:
• Equipment and device dataplate information
• Prioritized Cummins fault codes and descriptions
• Ability to share any information in the app via email
• Route Parameter Manager diagnosis, repair and update functionality
• Read industry standard J1939 fault codes for all connected devices
• English, Spanish, and French language support – 


Cummins certified service providers who subscribe to the Immediate Assessment feature of Guidanz also have access to:
• Prioritized faults and the top three most likely root causes
• Estimated service times
• A history of recently retrieved information, faults, and analysis right on your phone
• The ability to turn assessments into Guidanz Job Orders to track the equipment throughout the service event

To use Guidanz you will need a Cummins INLINE™ datalink adapter. Simply plug either the INLINE 7 or the new INLINE mini wireless adapter into the J1939 connector on the vehicle or equipment, and then connect to your phone or tablet via Bluetooth®. For more information or to purchase adapters, visit https://www.cummins.com/parts-and-service/digital-products-and-services/inline 

Some features will require a functioning Internet connection at the time of service.

Stay tuned for additional updates as Cummins works to provide you a simple, user-friendly, guided workflow. You will be able to seamlessly share critical information about servicing Cummins engines and related equipment across multiple platforms, and with your whole service team.

## Key features

- Equipment dataplate information
- Prioritized Cummins fault codes
- Route Parameter Manager diagnosis
- J1939 fault code reading
- Information sharing via email
- Immediate Assessment feature (subscription)

## Recent user reviews (9 of 9)

All indexed reviews: https://appshunter.io/ios/app/cummins-guidanz/id1184579875/reviews.md

### 5/5 — Test

*2025-01-14*

Reviews are 2yrs old

### 1/5 — Constant issues

*2024-04-15*

Very slow, creating an image takes forever, constant server communication issues.

### 4/5 — A convenient version of Insite

*2022-08-25*

Mobile mechanic for a Cummins powered bus fleet. The app gives you translation of J1939 codes with brief explanations. It will not clear codes, so it is back to the shop for more complicated jobs. I’m finding it good for sensor swap outs or disconnects. Avoid calibration updates as Bluetooth is not as reliable as a cable connection(a shop job for sure). I hope to see more development of the app. For those whom can afford the telematics subscription, good luck. For the poor man, go with QuickServe online or hard copy manuals.

### 1/5 — No stars

*2022-04-19*

So the idiots at Cummins decided to ditch quickserve app and use this guidance trash that doesn’t even work. This has become a money making for them. Also, while you are it Cummins needs to put better product on the road besides these machines that keep breaking down. It’s time for CAT to come out of retirement and show these vampires at Cummins how to make a real engine that last more than a million miles.

### 1/5 — disappointed

*2022-03-11*

I used this App a lot because we are a Dealership selling used Cummin engines, and we no longer have access to this App to have information on each engine we sell.  this is something really disappointing and even more so when it says that you have to pay more than $1,200 a year for them to give you simple information

### 1/5 — USELESS App says I need update but no update available

*2022-01-16*

This app used to work but now it says I need an update when one isn’t available. I can no longer communicate with my engine!!

### 1/5 — Crushing

*2022-01-07*

The app crushes constantly, if you start performing ECU software update, and the app crushes, ECU is toast.

### 1/5 — Unusable app

*2021-08-16*

Will not even let me in.  Says I need to update but the app is directly off the App Store.  Have tried deleting and reinstalling to no avail. Garbage.

### 1/5 — Update doesn’t respond

*2021-04-28*

Keeps taking me back to the start page when I tap on the update action tab

## Frequently asked questions about Cummins Guidanz

### What is Cummins Guidanz?

Cummins Guidanz is a mobile application offering genuine service products and capabilities from Cummins. It aims to accelerate repair processes and enhance customer uptime by providing access to equipment information, fault codes, and diagnostic tools.

### What are the main features of Cummins Guidanz?

Key features include equipment dataplate information, prioritized Cummins fault codes with descriptions, Route Parameter Manager diagnosis, and the ability to read industry-standard J1939 fault codes. It also supports English, Spanish, and French languages.

### Does Cummins Guidanz require any special hardware?

Yes, to use Guidanz, you will need a Cummins INLINE™ datalink adapter, such as the INLINE 7 or INLINE mini wireless adapter. These adapters connect to the vehicle's J1939 connector and then to your phone or tablet via Bluetooth.

### What is the Immediate Assessment feature in Cummins Guidanz?

The Immediate Assessment feature, available to subscribed Cummins certified service providers, offers prioritized faults, likely root causes, estimated service times, and a history of retrieved information. It allows assessments to be converted into Guidanz Job Orders for tracking.

### Is Cummins Guidanz available on all devices?

Cummins Guidanz is available for iPhone and iPad devices. It is designed for mobile use to assist technicians in the field.

### How often is Cummins Guidanz updated?

The latest version of Cummins Guidanz is 7.5.0, last updated on January 13, 2026. Cummins is continuously working on additional updates to provide a user-friendly guided workflow.

### What is the user rating for Cummins Guidanz?

Cummins Guidanz has a user rating of 3.0 stars based on 48 ratings. This suggests a mixed user experience, with some users finding it valuable and others encountering issues.

### Does Cummins Guidanz have ads?

No, Cummins Guidanz does not contain advertisements. The app is free to download and use, focusing on providing service and diagnostic information without interruptions.

## Version history (last 5 releases)

### 7.7.0 — 2026-08-11

Make and Model are now displayed at the top of the connection screen for easier identification and automatic sorting.
Improved the Faults screen by adding quick access to the Clear Faults button.
Added support for servicing Motor Generator Units (MGUs).
Updated Chinese, French, and Spanish translations.
Introduced the new Seat-Based user sign-in experience. Refer to the Guidanz DTK Support page for training materials and more information.
Bug fixes and performance optimizations.

### 7.5.3 — 2026-04-27

What’s New
- New Tests: Added Diagnostic Test and Advanced Feature (see Support Page for list).
- Stability: Bug fixes and performance optimizations.

### 7.5.0 — 2026-01-13

What’s New
- Turbocharger Actuator Compatibility: Able to View HW/SW Part Numbers in Advanced Feature.
- DTC Snapshots: Support added for Fault Snapshots.
- Fault Lamps:  Displays dashboard status lamps within the app.
- New Tests: Added Diagnostic Test and Advanced Feature (see Support Page for list).
- Stability: Bug fixes and performance optimizations.

IMPORTANT:
- Minimum OS: Requires iOS 18 or higher.

### 7.4.1 — 2025-11-23

- Bug Fixes

### 7.4.0 — 2025-10-22

What's New:
Separation of "Engine Hours" and "Odometer Reading" during connection process
Ability to attach files to the Diagnostic Sessions
Data Monitoring Performance Improvements
New Diagnostic and Special Feature Tests (full list can be found on Cummins Guidanz Product Support Page)
"Bug" Fixes

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## More apps by Cummins Inc.

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All apps by Cummins Inc.: https://appshunter.io/developer/500176910

## Related topics

[cummins](https://appshunter.io/ios/topics/cummins) · [cummins quickserve](https://appshunter.io/ios/topics/cummins-quickserve) · [cummins guidanz](https://appshunter.io/ios/topics/cummins-guidanz) · [cummins insite](https://appshunter.io/ios/topics/cummins-insite) · [otr diagnostics](https://appshunter.io/ios/topics/otr-diagnostics) · [fleetguard](https://appshunter.io/ios/topics/fleetguard) · [cummins connect](https://appshunter.io/ios/topics/cummins-connect) · [cummins generator](https://appshunter.io/ios/topics/cummins-generator)

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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 2026-08-18.*