Co-Founder, Codeskop
Sentry does far more, including tracing, session replay, profiling and self-hosting. Codeskop is a narrower mobile tool built around crashes, ANRs and failed API calls. Here's an honest comparison with dated pricing.
Keep Crashlytics for free, mature crash reporting. Add Codeskop when you need failed API calls, ANRs on older Android versions, web errors and WhatsApp alerts in one place. Here's the honest comparison.
Flutter routes errors through three channels: the framework, the platform dispatcher and isolates. Here's what each catches, a complete main() setup, and how to report them in production.
An ANR means your main thread was blocked for too long. Here are the exact timeouts, the common causes with code, how to read a trace, and how to catch ANRs in production.
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