React Native Community CLI
Command line tools to help you build React Native apps
What you get
Actual user experience across devices and regions: startup times, screen transitions, and real user flows.
Built on OpenTelemetry, unifying logs, metrics, and traces across Datadog, New Relic, Sentry, or a custom provider.
Instrumentation across native code, JS runtimes, and backends for true end-to-end visibility.
Monitoring embedded in your pipeline: surface issues early, gate releases, link metrics to code changes.
Alerts on business-critical signals, tracking what actually moves the product, not metric noise.
Structured root-cause analysis: define, measure, analyze, improve, and control performance over time, not just react to incidents.
How we work together
Our senior engineers join your team to ship features, guide technical decisions, and strengthen delivery.
We take agreed work from technical planning to release, with clear responsibilities and progress you can see.
We address a performance, migration, or infrastructure challenge, or run training around your team’s needs.
Case studies




Release Monitoring & Observability
From first signal to long-term strategy, we tie observability to releases so issues surface before users hit them.
We had been struggling with React Native application performance until we met Callstack.

We’ll connect you with the right expert within 24 hours.
Still have questions?
We help you define what to track, from startup times and screen transitions to real user flows, and instrument it across JS, native, and backend, so you start with meaningful, production-ready signals.
Yes. The stack is vendor-agnostic, built on OpenTelemetry, so we unify logs, metrics, and traces across Datadog, New Relic, Sentry, or a custom provider without making you start over.
We embed monitoring in your pipeline to surface issues early, gate releases, and link metrics to specific code changes, so regressions are caught before they reach users.
We focus dashboards and alerts on business-critical signals that actually move the product, such as startup time, screen transitions, and real user flows, instead of flooding teams with metric noise.
Yes. We instrument native code, JS runtimes, and backends for true end-to-end visibility, so you can trace an issue across boundaries and see what caused it.
Logs and crash reports tell you something broke, but not how real users experienced it. We add Real User Monitoring across devices and regions, capturing startup times, screen transitions, and real flows, so you see release issues before users do.
We build in DMAIC, a structured method to define, measure, analyze, improve, and control performance over time. That turns monitoring into ongoing improvement instead of one-off incident response.