Based on the users' reviews, here are three cons and pros for the Numberlink puzzle game app: **Pros:** 1. "Engaging gameplay keeps me hooked, love the increasing difficulty level and colorful graphics." 2. "Solves are clever and challenging, perfect for brain teasers enthusiasts, easy to understand." 3. "Portable and accessible across devices, no ads annoyances, great offline mode functionality." **Cons:** 1. "In-app purchases feel greedy, some levels are too easy with no challenge and no rewards." 2. "Progress not synced between devices, frustrating experience when switching devices." 3. "Lack of customization options and music choices, repetitive sound effects get annoying." Please note that the reviews are subject to change and may not reflect the full range of opinions on the app.