I would recommend a limited company. I started a SAAS service (http://usehuman.com http://usehuman.com) for fun but also to learn about the economics/technical

I would recommend a limited company. I started a SAAS service (http://usehuman.com http://usehuman.com) for fun but also to learn about the economics/technical side of the business. Whilst I developed the product as a hobby, once I began charging, I decided incorporating would be best. If anything, incorporating it not just about better bookkeeping, it means you are committed. Companies (or individuals for that matter) buying your software need re-assurance that they can rely on you. Incorporating also doesn't mean you are tied to one particular product, it gives you a platform to launch several products if that's what works for you.