Instabug - The top apps in the world rely on Instabug for beta testing, user engagement and crash reporting.
Balto - Easy feedback with screenshot / videos for your beta apps
Bird Eats Bug - Saw a bug? Send an instant replay to engineers. It will come with console logs and everything. Developers will ❤️ you.
buddybuild - Buddybuild ties together continuous integration, continuous delivery and an iterative feedback solution into a single, seamless system. With buddybuild, you can focus on what matters most: creating awesome apps.
Sentry.io - From error tracking to performance monitoring, developers can see what actually matters, solve quicker, and learn continuously about their applications - from the frontend to the backend.
Twitter Audience Insights - Loads of info about your followers, their interests, & more