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Description: In this tutorial, we explain how power calculations without Monte Carlo methods for the chi-squared test and the RMSEA-tests of (not-)close fit can be conducted using the Shiny app ‘power4SEM’. This app facilitates power calculations for SEM using two methods that are not computationally intensive, and that focus on model fit instead of the statistical significance of (functions of) parameters. These two methods are the method of Satorra and Saris (1985) for power calculations of the likelihood ratio test, and the method of MacCallum, Browne, and Sugawara (1996) for RMSEA-based power calculations. We illustrate the use of power4SEM with examples of power analyses for path models, factor models, and a latent growth model.