To save the app on your phone, just follow the next steps:
For IOS devices
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Access the app here
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Click on "share".
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Select: "Add to Home Screen".
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You can now access the app from your home screen.
How to make a shortcut for Android (Chrome):
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Access the app here
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Open "Settings"
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Select "Install app"
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You can now access the app from your home screen.