How to Choose the Right Monitoring Tool for Your React App

React applications face silent failures — from race conditions to null check errors — that often go undetected until users report them, making monitoring essential for production apps. Monitoring broadly falls into three categories: error tracking, performance monitoring, and session replay, each answering a distinct question about app health. A practical comparison of seven popular tools — including Sentry, LogRocket, Datadog, New Relic, Bugsnag, and FullStory — highlights their strengths based on team size and use case. Sentry is recommended as a strong default for most React and Next.js projects, offering all three monitoring categories under one SDK with a free tier covering 5,000 errors per month. Choosing the wrong tool can waste both setup time and budget, making a clear decision framework critical before committing to any solution.