Concerns have been raised over a new app that was originally designed to help Christchurch ratepayers - but hasn't lived up to its promise.

Christchurch City Council staff have so far spent $6.2 million developing a one-stop-shop app that is actually little more than a new website, prompting outrage and worries from the Council.

Christchurch City Councillor Sam MacDonald says the appointed IT experts are working through the issue to try and solve it.

"We were a bit surprised when they came to us saying - no, no it'll be a web version. Which, as you know, a lot of people don't use. We need to make it as easy for people as possible."

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