New app works out the cheapest way to get around South Australia

As the cost of living continues to bite, a new app could save commuters money, South Australia's peak motoring group says.

Called RAA Go, it brings together all of the state's transport options from public buses, trains and trams, to e-scooters and e-bikes.

It calculates the cost, time and environmental footprint of using multiple modes of transport along the journey, compared to just using a car, allowing commuters to pick which options work best.

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It's anticipated to be a popular consideration as families look to tighten their wallets.

The Royal Automobile Association of South Australia believes under-30s have the biggest appetite to combine transport modes.

But its research has shown broader interest too.

Tom Graue from the RAA said the app promotes public transport.

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"You can snitch together multiple different modes to get you from A to B," he said.

"We certainly would hope that this app provides and promotes public transport as a meaningful option."

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While catching public transport may seem like a clear way of saving money, recent figures show usage of buses, trams and trains are still some way off pre-pandemic levels.

It's down 28 per cent on 2018, but up 11 per cent from last year.