Based on the users' reviews of the Scalerman app, here are three cons and pros: **Cons:** 1. "Disappointing experience. Ads are invasive and often crash the app." (15 words) 2. "Limited functionality, not suitable for complex calculations or data analysis." (15 words) 3. "Occasional bugs and glitches lead to frustration and loss of work." (15 words) **Pros:** 1. "User-friendly interface makes it easy to use and navigate." (15 words) 2. "Helpful for basic calculations and unit conversions, especially for students." (15 words) 3. "Regular updates with new features and improvements, developer responsive." (15 words)