Yeah my dad can't take slat since his heart transplant. Luckily we have found all sorts of food taste better without salt as the natural flavor is brought out and no longer covered up.
Cambles makes a line of low sodium soups that are not too bad that you can make in the microwave. They are labeled Healthy Requests and they are low enough in sodium that my dad can eat them. Still given the choice I would rather have home made soup.