AP class

After taking both, I'd say AP Chemistry is the more challenging class. Ap Bio is more centered around memorization and the application of terms and concepts. Though memorization is also extremely important in Chem, its more math-based and technical with complex formulas etc. Chem kicked my butt even though I dedicated the majority of my time during the week to the class. Make your choice based on the skills you want to learn or already have strength in and wish to develop.

chem will ruin ur life tbh, id go with bio

Depends on major and career goals as well as prior knowledge.

In my opinion, I'd go with AP Bio cause personally that's what works for me the best only cause AP Chem is just so much harder to excel and do really well but then again it's based on what you can do so just take whatever you think you might be good at.