The different lending institutes market their products under all different names. In the finance industry the above refers to 100% interest offset facility.
This is where you use your income and savings to reduce interest on your home loan.

The more you deposit, using income and savings, the less you pay in interest on your home loan. Every day that your funds remain in the account, you are reducing the home loan interest you pay, reducing your debt and building your equity.

In the guideline graph example below; the couple earn $4,012 clear per month.
There average monthly expenses are $2,528 per month, which most is placed on their credit card and then completely paid off in the time period, so no interest is ever incurred on their credit card. After there monthly expenses of $2,528 per month they also have their minimum monthly loan repayment, which is $1,287 per month, (which is based on a current variable rates on a loan of $200,000).

This would leave this couple $197 per month left in their account.

However this method saves this couple $80,811 in home loan interest and they would own the property 8 years and 1 month sooner.