So many subtleties already mentioned, and of course I agree with all the answers stating that mostly, they mean the same thing. But one subtle. The second form looks more correct to me, but the first expression is "I'm home " is what you say when you walk in through the door to tell "I'm. He visto I'm home y I'm at home, cuál es el correcto para decir: estoy en casa?, ¿ hay alguna diferencia entre ambos? Gracias.