Based on the users' reviews, here are three cons and pros of the "Escape Titanic: Killer's Notes" app: Cons: 1. "Buggy and freezes often, frustrating experience overall." 2. "Too much repetition in puzzles and mini-games, got monotonous." 3. "Lack of instructions for some puzzles, felt lost and confused." Pros: 1. "Immersive storyline and atmosphere, felt like I was on the Titanic." 2. "Challenging but not impossible puzzles, kept me engaged and excited." 3. "Beautiful graphics and sound effects, visually stunning experience." Note: The review summaries are condensed to 15 words or less as per your request.