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Supported Platforms

Web-based Apps

Our web-based apps, available as part of Special iApps Membership, require a compatible web browser and operating system platform. You should ensure that you are running the latest version of the browser you wish to use.

Google Chrome

Supported on Android 5.1 and later, Chromebook, macOS (High Sierra and later), Windows 10 and 11.

Apple Safari

Supported on iOS 13 and later, iPadOS 13 and later and macOS (High Sierra and later). Note our web-based apps cannot be used on iOS 12 or earlier.

Microsoft Edge

The "new" Microsoft Edge is supported on Windows 10 and 11, and macOS (High Sierra and later).

Mozilla Firefox

This is supported on Windows 10 and 11, and macOS (High Sierra and later).


Supported on Windows 10 and 11, and macOS (High Sierra and later).

Recommended Desktop Browsers

We recommend that if you have the "legacy" version of Edge on Windows, which is no longer supported by Microsoft or Special iApps, that you upgrade to the new Chromium-based version of Edge. For details of how to upgrade refer to the Microsoft website. Our apps are not compatible with Internet Explorer.

On Windows and macOS, we strongly recommend using Chrome, Edge or Brave, as these offer the most complete and up-to-date support for web-based apps. To install our web-based apps on macOS requires one of these. Safari on macOS does not support installing web apps: they can only be run in a standard browser window.

Samsung Internet Browser

Samsung Internet Browser for Android is not compatible with our apps: please use Google Chrome instead.

Support for Linux

There are many different distributions of Linux, and we are not able to support each individual one. Our development environment includes Debian (versions 10 and 11 as at November 2021), and we support recent versions of Chrome, Edge, Brave and Firefox on Debian. We expect these to behave similarly on derived distributions, such as Ubuntu, but we do not have testing facilities for these.

For help with installing our apps, refer to our User Guides.

Legacy Apps

We no longer support or maintain legacy editions of our apps that were downloadable from App Store, Google Play or Amazon Appstore. If you purchased any of these since November 2021, and provide us with copies of your purchase receipt(s), we can give you a discount on Special iApps Membership subscription.