What are some alternatives?
When comparing Bugsee and Sentry, you can also consider the following products
Instabug - The top apps in the world rely on Instabug for beta testing, user engagement and crash reporting.
Raygun - Raygun gives developers meaningful insights into problems affecting their applications. Discover issues - Understand the problem - Fix things faster.
Buglife - Seriously awesome bug reporting for iOS apps
BugSnag - Be productive - not all bugs are worth fixing. Experience best-in-class error monitoring for applications across the stack.
Stetho - A debug bridge for Android applications, enabling the powerful Chrome Developer Tools and much more.