MoodPen is a platform designed to help people track and reflect on their emotions in order to take actionable steps towards personal growth. It features a journal with AI-provided personalized feedback, a venting chat system with real-time support, and mood insights to provide summaries and key takeaways. It also offers speech-to-text and multi-lingual support, as well as the ability to change the AI persona. It is available as either a subscription or a lifetime membership.