Front-line workers and those paid in hourly wages rather than salaries have become a prime target in the world of business IT, with a wave of apps helping them find jobs, do their jobs, communicate with each other better. In the latest development, a UK startup building what it describes as a financial “super app” specifically for waged workers and their financial well-being is announcing a round of funding to double down on its strategy. Wagestream, known best for working with employers to enable salary advances for employees by way of an app, has raised $175 million, money that it will use to continue adding in more features to the app, and to fuel a big push into the U.S. market.