Flutter has become a popular cross-platform development framework, with 42% of developers using it in 2021. To help Flutter developers monitor their app's performance, Sentry has added support for Mobile Vitals, which includes monitoring cold starts, warm starts, frozen frames, and slow frames. This feature provides insights into an app's performance, helping developers identify issues and improve the user experience. With Sentry, Flutter developers can track metrics such as launch times, frame rates, and loading times to ensure their apps meet the minimum performance requirements for App Stores like Google Play. By using Sentry, Flutter developers can gain visibility into errors and latency issues, enabling fast fixes and delivery of polished experiences.