Use Safari to open the link that was sent to you along with your product key. Do not bookmark this page, instead you will be directed to use Safari's Add to Home Screen option. You will then have a new icon on your home screen for the web app - use this to open it, and log in with the details you were previously sent.
Note: You must use Safari, not any other browser (e.g. Chrome). You may need to scroll down to see Safari's Add to Home Screen option. If you open the link with a mail app other than Apple Mail (e.g. Gmail), this option will be missing. In that case, copy the link, open Safari from the home screen, and paste there.
Use Google Chrome to open the link that was sent to you along with your product key. Do not bookmark this page, instead open Chrome's menu (using the ⋮ button), and select Install App or, in older versions, Add to Home screen. You will then have a new icon on your home screen for the web app - use this to open it, and login with the details you were previously sent. Browsers other than Chrome are not supported.
Unfortunately Amazon Fire OS does not support installing web apps, instead you will need to run the web app directly in your browser. Bookmark the link that was sent to you along with your product key, and use this to open the app.
You do not have to install the app in order to use it on computers running Windows, macOS, Linux or Chrome OS, but we strongly encourage you to do so - it will then behave more like a standard application, without the search bar and decorations usually shown by web browsers, although it will still actually be run with the support of the browser you used to install it.
We recommend installing using either Google Chrome (on any of these platforms) or Microsoft Edge (on Windows or macOS, but not the "legacy" version of Edge on Windows, which Microsoft no longer supports). It is not currently possible to install a web app using Safari on macOS, without additional tools. We do not recommend using Mozilla Firefox, as it has limitations with text-to-speech.
Start by using Chrome or Edge to open the link that was sent to you along with your product key. Login to the app, and then once it starts an install button will appear, as indicated by the red arrow in the first screenshot below. Tap this to install - the app will then restart in its own window.
Note 1: Uninstalling the app will delete your content. You should take care to export any valuable word lists before doing so, as explained in Chapter 6.
Note 2: Log out of the app (from Word List > Actions > Reset > Logout) before uninstalling - otherwise you may be prevented from logging into it on another device (or in a different browser on the same device).
To uninstall on iOS or Android, remove as you would with any other app (deleting the Home Screen icon). To uninstall on Chromebook, right-click the app's icon in the Shelf, and select Uninstall.
To uninstall on Windows or Mac open the app, logout of it, tap the menu button (⋮ or …) in its top bar, and select the uninstall option. You will be presented with a pop-up similar to that in the lower screenshot above. Click the "clear data" box and then the Remove button.