With Gas-Trak Online (GTO), managing your refrigerant usage, cylinder tracking and job scheduling has never been easier.

Looking for a system to manage your refrigerant and industrial gas cylinders? With Gas-Trak Online (GTO), managing your industry-compliant refrigerant usage has never been easier. GTO is the ultimate management tool for tracking cylinders and managing jobs; the mobile app can be used conveniently on the go. Use the Management Web Portal to organize your field engineers and schedule jobs. Report on usage, calculate CO2 equivalents and find insights into engineer utilization and analysis of the work type split. Visit for full portal management details.

Main Features/Benefits:
Cylinder Management
- Tracking- efficiently track a fleet of cylinders across multiple engineers to save time and help to control your rental costs, all within GTO.
- Stock list- keep records of your entire cylinder fleet, rental costs and gas usage seamlessly.
- Collect and return any suppliers’ cylinders using the Track Cylinders technology.
- Quickly and accurately look up cylinder details from the largest, worldwide refrigerant supplier and wholesaler partner network.
- Rental tracking at your fingertips- allows for easy rotation of cylinder stock for reduced costs.

Information Storage and Job Management
- All the information you need in one place- customer, site and equipment information on GTO to create jobs quickly and efficiently.
- Create, allocate and complete jobs whilst tracking gas usage by equipment, site and customer.
- Track gas usage on jobs, right down to the equipment it was used on.
- Store information on active and completed jobs for streamlined data validation.
- GWP Calculator provides fast and accurate CO2 equivalents.

- Reduce the time spent and costs occurred in reporting.
- Generate efficient, accurate and compliant reports.
- Free reporting- access and download reports.
- Enhanced reporting*- access, download and customize operator and contractor reports via the secure GTO web portal.
- Analyze engineer and customer performance via a personalized reporting dashboard*.

- All data is encrypted during transmission to ensure security and peace of mind.
- Manage engineer permissions to give you extra security*.

- Organize installations, service calls, leak testing and follow ups, retrofits and decommissioning jobs directly in the GTO app.
- Use the GTO app anywhere, it will synchronize offline data with the cloud once back online, enabling you to work in locations with low or no connectivity.
- Personalize your settings to fit your working environment.

*Enhanced service users only

This app should be used in conjunction with the Gas-Trak Online Portal for the best user experience. Please contact the GTO team for information on creating a GTO account. Our standard package is free to all users. For further information or a free trial or demo of our enhanced package, please contact
Our team are here to help! For any queries please visit our website: or contact

What’s New


Show/Hide searchbar within pages.
Allow Gas Usage increments less than 0.1.
Explicit Location permission request when needed.
Bugfixes for memory usage.


A-Gas Ltd
101 MB

Requires iOS 10.2 or later. Compatible with iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE, iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPhone XS, iPhone XS Max, iPhone XR, iPad Air, iPad Air Wi-Fi + Cellular, iPad mini 2, iPad mini 2 Wi-Fi + Cellular, iPad Air 2, iPad Air 2 Wi-Fi + Cellular, iPad mini 3, iPad mini 3 Wi-Fi + Cellular, iPad mini 4, iPad mini 4 Wi-Fi + Cellular, 12.9-inch iPad Pro, 12.9-inch iPad Pro Wi-Fi + Cellular, 9.7-inch iPad Pro, 9.7-inch iPad Pro Wi-Fi + Cellular, iPad (5th generation), iPad Wi-Fi + Cellular (5th generation), 12.9-inch iPad Pro (2nd generation), 12.9-inch iPad Pro Wi‑Fi + Cellular (2nd generation), 10.5-inch iPad Pro, 10.5-inch iPad Pro Wi‑Fi + Cellular, iPad (6th generation), iPad Wi-Fi + Cellular (6th generation), iPad Pro (11-inch), iPad Pro (11-inch), iPad Pro (12.9-inch) (3rd generation), iPad Pro (12.9-inch) (3rd generation), and iPod touch.


English, Dutch, French, German

Age Rating
Rated 4+
© 2016 A-Gas Ltd


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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