Direct YallaExpand WorkDeveloper Tools / ObservabilityWebReact Native SDK

WhatzBug

A React Native observability and debugging platform providing crash reporting, network monitoring, session replay, and real-time performance profiling for mobile engineering teams.

WhatzBug — React Native Mobile Observability Platform

About the Project

WhatzBug is a production-grade mobile observability platform built specifically for React Native engineering teams. It provides real-time crash reporting with full stack traces, automatic XHR/fetch network interception, screen-by-screen session replay using privacy-masked screenshots, app launch and FPS performance metrics, and a real-time desktop debugger accessible via WebSocket with 13+ inspection panels. The platform prioritizes developer privacy and security through on-device PII redaction before any data is transmitted.

The Challenge

React Native mobile teams lack production-grade observability tools that combine crash reporting, network inspection, session replay, and real-time debugging without compromising user privacy or requiring cloud dependency for local debugging workflows.

The Solution

WhatzBug integrates directly into the React Native app as an SDK, capturing device-level events locally with PII redaction, then exposing them through a WebSocket-connected desktop debugger and a cloud dashboard for async review — giving engineers full visibility without compromising user data.

Our Role & Contribution

WhatzBug represents direct product engineering work — product design, SDK architecture, real-time debugging infrastructure, and developer experience design for mobile engineering teams.

Outcomes

A production-ready React Native observability platform currently in early access, offering engineering teams full-stack mobile visibility without cloud lock-in.

Dashboard & Web Views

App profiler dashboard

Monitor real-time app resource usage and performance metrics directly from the desktop profiler.

Instantly detect freezes, frame drops, and UI hangs before they impact users.

WhatzBug performance diagnostics dashboard showing FPS, JS stalls, frame drops, UI hangs, and network issues.

Inspect Android logs and debug events in real time from one unified interface.

Dark-mode Logcat viewer displaying Android logs, warnings, and debug entries connected to a live emulator session.

Centralize SDK logs, warnings, and errors for faster debugging and monitoring.

SDK logs dashboard showing info, warnings, debug events, and error messages generated during app testing.

Review recorded sessions and analyze user interactions across your app.

Session management screen displaying recorded app sessions with replay and interaction statistics.

Replay user sessions frame-by-frame to investigate issues and understand behavior.

Session replay interface showing live interaction tracking and recorded gestures from a mobile app session.

App profiler dashboard

Monitor app performance and resource usage in real time.

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WhatzBug — React Native Observability & Debugging | YallaExpand Portfolio