Feijoa co-founder Ben Davin and Mark White-Robinson. (Image: Supplied)A fintech startup estimates its customers’ spare change will turn into an extra $50 million in KiwiSaver contributions over 25 years. That is despite its launch only in September last year.Feijoa has an app that rounds up users’ purchases to the nearest dollar or more and pays those extra cents into their KiwiSaver funds.The company is one of 15 startups selected for Creative HQ’s latest fintech accelerator programme, which was launched on Jan 22. ‘Amazing follow-on effects’ Creative HQ’s fintech le...