Based on the user reviews of the "Merge Numbers" app, here are three cons and pros: **Cons:** 1. "Not satisfying experience" - Users feel that the app is too easy and lacks challenge and excitement. 2. "Glitches and errors" - Several users have reported glitchy experiences, including game crashes and incorrect calculations. 3. "Limits on progression" - Users feel that the app's levels and content are limited, leading to a sense of stagnation. **Pros:** 1. "Addictive gameplay" - Many users find the game's simple yet engaging mechanics hard to put down. 2. "Easy to learn" - Users appreciate the app's intuitive controls and straightforward gameplay. 3. "Attractive graphics" - Users enjoy the app's colorful and visually appealing design. Note: The users' reviews are subject to change over time, and this conclusion is based on a snapshot of the reviews at the time of my knowledge cutoff.