Based on the user reviews of the app "Trigonometry Identities Proofs", I've extracted the following three cons and three pros: **Cons:** 1. "Limited explanations and examples, leaving users to figure out on their own." 2. "Sometimes incorrect or outdated formulas cause frustration and doubts." 3. "No interactive exercises or quizzes to reinforce learning and retention." **Pros:** 1. "Convenient and easy-to-use interface makes learning on-the-go possible." 2. "Accurate and organized presentation of complex trigonometric identities and proofs." 3. "Effective reference tool for refreshing and broadening understanding of trigonometry concepts." Please note that the limitations of the review data (15 words per item) may affect the accuracy and completeness of the extracted cons and pros.