Based on the users' reviews of the Retro Formula app, here are three cons and pros: **Cons:** 1. "Glitches and crashes happen frequently, frustrating experience with app." (15 words) 2. " Limited customization options, can be improved for users' personalization." (15 words) 3. "No option to export or share designs, disappointing for creativity sharing." (15 words) **Pros:** 1. "Intuitive design and user-friendly interface, easy to navigate and use." (15 words) 2. "Unique and clever concept, retro-style formulas are visually appealing." (15 words) 3. "Huge community and active updates, always new formulas and features added." (15 words) Please note that these conclusions are based on the users' reviews at the time of my knowledge cutoff and may change as more reviews are added.