Early this week, Aakrit Vaish, a Mumbai based technology entrepreneur and angel investor, had a windfall. One of his more recent investments, online real estate listings and search startup Flat.to got acquired by Bangalore company Commonfloor for a undisclosed sum. Vaish had angel funded the company less than a year ago. The profit that Vaish has reaped from exiting Flat.to comes at an opportune time. He’s thick in the middle of getting his own venture Haptik — a instant messaging app for brand and product support — off the block.