Michaelis Guia Prático da Nova Ortografia is a free Android application that aims to help users understand the changes in the spelling of the Portuguese language introduced by the Portuguese Language Orthographic Agreement. The agreement was signed in Lisbon on December 16, 1990, and approved by Legislative Decree No. 54 of April 18, 1995, in Brazil. The app uses the 5th edition of "Spelling Vocabulary of the Portuguese Language" (VolP), published by the Brazilian Academy of Letters in March 2009.

The guide provides a simple and convenient way for users of phones and tablets to get answers to their questions about the Portuguese Language Orthographic Agreement. The app is part of the Education & Reference category and the Books subcategory, and it is compatible with Android 9.0.