It's fantastic to see you progressing with your social networking startup! You're absolutely on the right track with the KPIs you've mentioned. Metrics like Users, Retention Rate, Growth Rate, User Downloads, DAU, and MAU are indeed crucial indicators that investors pay close attention to.

In addition to these, another important metric that investors often look at is Engagement Rate, which measures how actively users are interacting with your platform. Metrics related to user engagement such as comments, likes, shares, and time spent on the platform can provide valuable insights into the level of user involvement.

As for the numbers to aim for, it can vary depending on your specific market and target audience. However, generally speaking, showing consistent growth in these metrics, along with a healthy retention rate, is key to demonstrating traction and potential for long-term success.

Regarding your question about KPI analytics and traction, have you considered leveraging the expertise of a specialized development team? Cleveroad, for example, offers tailored solutions for social networking startups, providing not only technical expertise but also strategic guidance to help you achieve your goals - https://www.cleveroad.com/industries/social/. Exploring such partnerships could further enhance your chances of attracting investors. Best of luck with your venture!