Fitterfly, a Navi Mumbai-based health tech start-up specialising in Digital Therapeutics (DTx) and is founded and run by a team of Doctors, Engineers and Senior Nutritionists, has raised $3.1 million in a Pre-Series A funding round led led by Fireside Ventures. 9Unicorns — the accelerator fund of Venture Catalysts —Venture Catalysts and a clutch of…