1. A computer-implemented method for correcting words in transcribed text, the method comprising: receiving speech audio data from a microphone in a mobile computing device; sending the speech audio data from the mobile computing device to a transcription system; receiving, at the mobile computing device, a word lattice transcribed from the speech audio data by the transcription system; presenting one or more transcribed words from the word lattice on a display screen of the mobile computing device; receiving, at the mobile computing device, a user selection of at least one of the presented transcribed words; in response to receiving the user selection of the transcribed word, presenting on the display screen one or more alternate words for the selected at least one word, from the word lattice; receiving, at the mobile computing device, a user selection of at least one of the alternate words; and in response to receiving the user selection of the at least one alternate word, replacing the selected transcribed word in the presented transcribed words with the selected alternate word.