Based on the users' reviews of the Hair Plant app, here are three cons and pros: **Cons:** 1. "Disappointing results so far, didn't see much hair growth after using the app." 2. "Limited customization options for personalized advice and guidance." 3. "Occasional glitches and errors, causing frustration and unreliable app experience." **Pros:** 1. "Easy to use, intuitive interface, and helpful videos for hair care guidance." 2. "Effective in providing customized routines and product recommendations." 3. "Community features and chat support helpful in addressing concerns and getting advice." Please note that these are summarized from the users' reviews and might not reflect every single opinion.