This document outlines a research study conducted to develop a rubric for evaluating mobile apps for language learning (REALL). The study involved three stages: 1) analyzing and categorizing existing English language learning apps, 2) designing an evaluation rubric based on pedagogical criteria, and 3) creating a parallel rubric to assess apps based on linguistic criteria defined by the Common European Framework of Reference for Languages. The rubrics were then used to evaluate the top five apps identified in stage one. The study aims to provide a comprehensive framework for assessing the pedagogical quality, technical features, and linguistic suitability of apps for teaching and learning English as a foreign language.