Tech Geek Eco, a personal finance app that offers yields of 2.5% to 5% and cash back for shopping at Amazon, Uber, and DoorDash, raises $26M led by a16z cryptoBy Daniel HarrisonMarch 6, 20230 amazon uber doordash 26mhackettfortune Eco, a personal finance app that offers yields of 2.5% to 5% and cash back for…