I do sidework in a very obscure part of the hvac industry, usually as a consultant. Many of my customers would prefer to use a credit card because, if I am around that means they have made a mistake that I have to help them clean up and they’d rather that info not go up the food chain to generate a check. The total dollar value all year is probably less than five k so I would rather not deal with having a merchant account to take credit cards. Is there a generally recommended ap for phones that can link to my normal bank account that lets me accept an occasional credit card? I do not really care about fees for something this small.