In a statement, Macquarie said the new service is intended for 'do-it-yourself' investors who want to manage their investments online and are seeking a flat-fee advice service to help them with their decisions.
It offers custom advice across a variety of asset classes, including cash, fixed income, equities, commodities and alternatives – all based on an investor's personal profile, objectives and risk appetite, Macquarie said.
Macquarie's move to target investors directly comes after NAB rolled out its free-to-use digital advice platform, NAB Prosper, to 40,000 customers in October 2015.
OwnersAdvisory reviews more than 30,000 investment products around the world to provide recommendations that align with individual investing styles, objectives and risk tolerance, the statement said.
Members receive general advice, regular market insights and a portfolio health score for a monthly fee of $45. Customers may also request custom advice to confirm or re-balance a portfolio on demand for $55 per statement.
"We want to encourage unadvised Australians to become more engaged in managing their finances and investments," Macquarie Wealth Management chief investment officer John O'Connell said.
"Technology is offering investors new opportunities to manage their investment strategies online, and they want quality advice and market insights to guide their choices.
"This is an exciting opportunity for consumers. OwnersAdvisory combines technology with Macquarie's vast market intelligence, insights and advisory expertise to inform and engage investors currently operating without traditional advice."
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