Based on the users' reviews of the "Coloring Nails 3D Salon DIY" app, here are the three cons and pros in English, limited to 15 words each: Pros: * "Life-changing app! So many designs and customization options are incredible." (user review) * "I'm not artistic, but this app made me feel like a pro nail artist!" (user review) * "Love the variety of nail art designs and the ability to save favorites." (user review) Cons: * "Sometimes the colors don't match the pictures, and it gets frustrating." (user review) * "The app crashes frequently, which is really annoying." (user review) * "Lack of realistic texture and dimension makes the designs look flat." (user review) Please note that the reviews might have changed since the last update, and this output is based on the data available at the time of my knowledge cutoff.