# Cat® Power OnSite — Quickapp to monitor ECM params > Engine data transfer and asset management tool for Caterpillar equipment. (iPhone/iPad app by Caterpillar Inc..) - Source: https://appshunter.io/ios/app/cat-power-onsite/id1438562258 (this page in markdown: same URL + `.md`) - Developer: [Caterpillar Inc.](https://appshunter.io/developer/571668770) - Category: Productivity - Price: Free - Rating: 3.70/5 from 3 App Store ratings · 2 written reviews indexed - Age rating: 4+ - Requires: iOS 13.0 · 30 MB - Languages: German (Germany), American English, French (France), Italian, Catalan, Polish, European Portuguese, European Spanish, Chinese (Simplified, China) - Released: 2019-11-16 - Data updated: 2026-08-25 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/cat-power-onsite/id1438562258/reviews.md ## What is Cat® Power OnSite? Use the Caterpillar Power OnSite app and dongle to connect with your engine via the CAN/J1939 data link to wirelessly transfer data to your mobile device. Caterpillar created the Power OnSite app specifically for customers to provide information to help you get the most value from your Caterpillar solution. No matter the size of your fleet or level of experience with digital technology, the Power OnSite app will help you maximize the value of your assets. "Requires Cat Part Number 572-8499". This part can be ordered from this link : https://shop.cat.com/en/usa-parts/572-8499 (Buy direct within U.S) https://parts.cat.com/en/catcorp/572-8499 (Outside U.S - purchase through dealer) App requires access permissions to BlueTooth and Location. ## Key features - Wireless engine data transfer - CAN/J1939 data link connection - Maximize asset value - Fleet management support - Requires specific dongle ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/cat-power-onsite/id1438562258/reviews.md ### 1/5 — Wish it could communicate with older 3512 and 3412 units. *2025-11-15* Wish it could communicate with older 3512 and 3412 units. It doesn’t even work with a backbone protocol of j1939. ### 2/5 — Good start *2020-01-14* I recently purchased the blue tooth kit and installed on a cat 3516B generator set. The hardware was easy to set up and connect to Bluetooth device but the app needs some work. Parameters need to be user adjustable as some of the available readings were out of scale. Also some didn’t work. I wanted to use this device instead of connecting a laptop via catsis but it doesn’t quite hit the mark. Also the ability to see alarm history would be beneficial. Please fix some of these small points and I think the app will have a beneficial use in the work force. Cheers ## Frequently asked questions about Cat® Power OnSite ### What is Cat Power OnSite used for? Cat Power OnSite allows you to wirelessly connect to your engine via the CAN/J1939 data link to transfer data to your mobile device. It helps you get the most value from your Caterpillar equipment and maximize asset value. ### Does Cat Power OnSite require any additional hardware? Yes, Cat Power OnSite requires the Cat Part Number 572-8499 dongle to connect with your engine's data link. This part can be ordered directly from Caterpillar's shop. ### What permissions does Cat Power OnSite need? The app requires access permissions to Bluetooth for wireless connection and Location services, likely to facilitate the Bluetooth connection and potentially for asset tracking. ### Is Cat Power OnSite free to use? Yes, Cat Power OnSite is available for free. The primary cost associated with using the app is the purchase of the required Cat Part Number 572-8499 dongle. ### What devices is Cat Power OnSite compatible with? Cat Power OnSite is supported on iPhone, iPad, and iPod devices. It is designed for mobile use with Apple's iOS operating system. ### How often is Cat Power OnSite updated? The latest version, 2.1.18, was updated on July 10, 2025. This indicates the app is actively maintained and receives regular updates from the developer. ### What is the age rating for Cat Power OnSite? Cat Power OnSite has an age rating of 4+. This suggests it is suitable for a wide audience and does not contain content inappropriate for children. ### Does Cat Power OnSite have ads? No, Cat Power OnSite does not contain advertisements. The app is ad-free, providing an uninterrupted user experience focused on engine data management. ## Version history (last 5 releases) ### 2.2.2 — 2026-05-26 We've included new features like Busload Utilization monitoring, listing source addresses present in the CAN, Live busload monitoring features for users to measure busload. ### 2.1.18 — 2025-07-10 - This includes a new feature called Data Logging, where the user can store the live parameter values in the dashboard to a CSV file against time in their own internal storages. - These logs helps in troubleshooting. - Improved the security of the application - Security Patch. - There are few addition of new parameters of PEMS ECM's. ### 2.1.10 — 2025-03-11 Updated the Privacy Notice and End User License Agreement for the app. ### 2.1.9 — 2024-11-27 Minor UI enhancements ### 2.0.61 — 2024-07-16 Fixed the existing PEMS bugs and enhanced PEMS capability ## Apps similar to Cat® Power OnSite | App | Rating | Price | Category | | --- | --- | --- | --- | | [ClearSky Smart Fleet](https://appshunter.io/ios/app/clearsky-smart-fleet/id1622616102) | 4.0 (4) | Free | Productivity | | [Hunton Distribution](https://appshunter.io/ios/app/hunton-distribution/id6504231758) | 5.0 (3) | Free | Productivity | | [Direct-Hit Mobile by Identifix](https://appshunter.io/ios/app/direct-hit-mobile-by-identifix/id6476014987) | 4.4 (32) | Free | Productivity | | [RIDGID Link](https://appshunter.io/ios/app/ridgid-link/id1278220445) | 4.6 (292) | Free | Productivity | | [Husqvarna Connect](https://appshunter.io/ios/app/husqvarna-connect/id1338776495) | 4.8 (1,005) | Free | Productivity | | [asTech Connect](https://appshunter.io/ios/app/astech-connect/id1534677307) | 2.3 (50) | Free | Productivity | ## More apps by Caterpillar Inc. - [Caterpillar Paving Calculator](https://appshunter.io/ios/app/caterpillar-paving-calculator/id571668487) - [Cat® Virtual Showroom](https://appshunter.io/ios/app/cat-virtual-showroom/id579346065) - [CatUsed Inspect](https://appshunter.io/ios/app/catused-inspect/id692919895) - [Cat® Wear Management System](https://appshunter.io/ios/app/cat-wear-management-system/id1151581022) - [Cat® Activate](https://appshunter.io/ios/app/cat-activate/id1158075669) - [Cat Rentals℠](https://appshunter.io/ios/app/cat-rentals/id1170158027) All apps by Caterpillar Inc.: https://appshunter.io/developer/571668770 ## Related topics [caterpillar parts](https://appshunter.io/ios/topics/caterpillar-parts) --- *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 2026-08-25.*