The best part about Appodeal was that it helped me gain more insights into my app's performance, which gave me an opportunity to make changes where needed. I would like to have some new features added or improved as well because sometimes things went wrong when using this service. It has been a great experience so far with Appodeal - they really care about your business and are always trying to find ways of improving user engagement and monetization efforts. They provide excellent customer support, easy access to tools and resources (including APIs) and detailed analytics reports.