Cummins Guidanz vs UnitDeck
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Cummins Guidanz
This app provides genuine service products and capabilities for Cummins equipment. It helps speed up repairs and improve customer uptime by offering fault code information, diagnostic tools, and repair guidance. It requires a Cummins datalink adapter for full functionality.
- Equipment dataplate information
- Prioritized Cummins fault codes
- Route Parameter Manager diagnosis
- J1939 fault code reading
- Information sharing via email
- Immediate Assessment feature (subscription)
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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.
UnitDeck
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UnitDeck is a fast unit converter and practical calculation toolbox built for real work. Choose your industry and UnitDeck places the conversions you use most on your Home screen. Convert common and specialist units, search by name or symbol, save favorites, keep conversion records, and add simple work notes without digging through long menus. BUILT AROUND YOUR WORK • Industry profiles for trade, logistics, construction, textiles, manufacturing, furniture, electrical work, HVAC, agriculture, energy, marine work, automotive work, and more • 121 conversion categories covering everyday and professional measurements • 25 practical trade calculators for common field and desk workflows • Search by unit name, symbol, or abbreviation • Favorites, recents, saved conversions, notes, configurable precision, and inch fractions FAST AND PRIVATE • Conversion inputs, saved records, and notes stay on your device • No account required • No advertising or cross-app tracking • Core conversion tools work offline UNITDECK PRO The free version includes a useful set of common conversions, tools recommended for your first industry, and limited previews of professional categories. UnitDeck Pro unlocks the complete professional toolbox with one lifetime purchase. It is not a subscription and does not auto-renew. Conversion results are provided for general information, estimation, and workflow assistance. Verify safety-critical, contractual, engineering, medical, financial, or regulated work against applicable standards and qualified professional guidance.
Screenshots
Verdict
The clearest difference is in-app purchases: Cummins Guidanz at none against UnitDeck's 1. UnitDeck's advantage is update cadence (every 2 weeks vs every 3 months). On price, ads, device support and iOS requirement 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
Both are free to download. UnitDeck sells 1 one-off in-app purchase. Cummins Guidanz asks for nothing beyond the download.
Cummins Guidanz ships an update every 3 months, UnitDeck every 2 weeks. The most recent releases landed on October 23, 2026 and October 25, 2026 respectively.
| Parameter | Cummins Guidanz | UnitDeck |
|---|---|---|
| Price | Free | Free |
| Rating | 3.1 (49 ratings) — better | — |
| Positive reviews | 21.4% of reviews | — |
| Number of ratings | 49 — better | — |
| Update frequency | Every 3 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 365 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Cummins Inc. | 建辉 刘 |
In-app purchases
Cummins Guidanz
No in-app purchases
UnitDeck
- UnitDeck Pro – Lifetime$3.99









