How do I get a company registered? How much does it cost? I have used Legalzoom once and Harvard Business Review once, to start two companies. They’re both in Delaware (it’s the new hotness or something). It cost me <$400 each time.Don't do this. I don't see a reason in having a corporate entity for making apps, let alone more than one. Get a DBA (sometimes called Fictitious Business Name or FBN; in California, this would be ~$80 one time vs $800/year if you incorporated and had to pay the franchise tax, which is owed regardless of state of incorporation or net income). If circumstances require you to establish a corporation (like a very rapidly growing service), establish a C-Corp and not an LLC. And go through a lawyer, not LegalZoom.
Never ever establish it through a service like LegalZoom. Pay an attorney $2k-$3k and do it the proper way. Any Silicon Valley lawyer (and investor) will tell you the same thing. Before any investor invests in whatever it is you're doing, they will require you to restructure the entity and issue shares all over again. Intellectual property belonging to the corporation may become another issue (I've heard some horror stories about this; make sure you transfer all IP to the corporation). This will end up costing more than if you had done it the right way in the beginning. I've even heard stories about people incorporating through LegalZoom and never actually issuing stock to anyone.
Also, there is a reason for incorporating in Delaware. Delaware's General Corporation Law is very flexible and is the most favored by businesses. The court also works better for businesses since your fate is decided by a judge rather than a jury. Other advantages include some tax advantages, a cheap filing fee, and privacy laws for executives and directors.