Based on the users' reviews of the Fork Challenge app, here are three cons and pros: **Cons:** 1. "Disappointing experience with bugs and glitches, often crashes and loses progress." (15 words) 2. "Too many annoying ads and pop-ups, distractions from the actual challenge." (15 words) 3. "Not challenging enough, some users find it too easy and not mentally stimulating." (15 words) **Pros:** 1. "Exciting and fun way to improve mental focus and cognitive skills." (15 words) 2. "Effective tool for building self-discipline and prioritizing tasks." (15 words) 3. "User-friendly interface and easy to use, even for children and seniors." (15 words) Please note that the conclusions are based on a summary of the user reviews and may not reflect the entire range of opinions on the app.