By using a GST calculator that is a web app instead of a native app all you are adding is a link and icon to your home screen. No app is install so very little of the valuable space on your mobile phone is used. The Australian GST Calculator is a web app. All that means is the Australian GST Calculator is a web page design to work well on a mobile phone.
To add the Australian GST Calculator to your home screen all your need to do is to go to the site www.AustralianGSTCalculator.com.au and select the option in your web browser to add the site to your home page for quick and convenient access. You don't need to give permissions as none are needed and the web app can't access things on your mobile phone like native apps can.
So if you're looking for a GST calculator, check out www.AustralianGSTCalculator.com.au.