You can start offering your Saas for free (so no need to stablish a company since you are not actually selling anything online, nor making money). Let if run fr

You can start offering your Saas for free (so no need to stablish a company since you are not actually selling anything online, nor making money). Let if run free for 3 months, see if people actually use it and if so, then proceed to make things official. It makes absolute no sense to setup a company just to check if your idea works.