Based on the user reviews of the app, here are three cons and pros in English, with 15 words limited for each item: **Pros:** 1. "Innovative approach to learning Japanese grammar with interactive exercises and fun phrases." 2. "Clear explanations and concise lessons make it easy to understand Japanese syntax." 3. "Opportunities to practice writing Japanese characters with correct stroke order." **Cons:** 1. "Explanation of kanji readings sometimes unclear, leading to confusion for beginners." 2. "Limited vocabulary and sentence structure, making it hard to practice speaking." 3. "Sometimes crashes or freezes, disrupting learning flow and leaving no option to resume." Please note that these are summarized points based on the user reviews, and individual experiences may vary.