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Cover image for I Built ReactoRadar, a Modern React Native Debugger for Hermes and New Architecture
Dave Kurian
Dave Kurian

Posted on • Originally published at otf-kit.dev

I Built ReactoRadar, a Modern React Native Debugger for Hermes and New Architecture

React Native Debugger for Hermes: How ReactoRadar Simplifies Debugging with New Architecture

Modern React Native development in 2026 has a glaring gap: traditional debugging tools have aged out, leaving developers piecing together workflows across obsolete or limited solutions. React Native Debugger stalls with Hermes; Flipper is deprecated. Even Chrome DevTools, still serviceable for web, is hobbled—restricted to the console, blind to network, Redux, or device storage. Enter ReactoRadar: a new standalone macOS debugger purpose-built for React Native 0.74+, closing the gap for the Hermes engine and the new architecture. If you’re wrestling with fragmented diagnostics or longing for Chrome DevTools-like depth on mobile, ReactoRadar is the answer. Here’s how it changes the game for debugging React Native apps.

Why traditional React Native debuggers fail Hermes and new architecture

Developers migrating to Hermes and React Native’s new architecture quickly discover the old tools don’t fit. React Native Debugger, for years the go-to for Redux and network insight, is fundamentally incompatible with Hermes. Your console logs may trickle in—barely—but anything deeper (network, state inspection) will silently break or vanish. Flipper was a workaround, but Meta has officially deprecated it; its plugin architecture is now inert, leaving broken integrations or unsupported features for current React Native versions.

Most are left falling back to Chrome DevTools—an incomplete fallback. While you can view logs, that’s where it ends. No network tab, so you’re flying blind on fetch, axios, or XHR. Redux? Unseeable. AsyncStorage? Opaque. This results in a tangled workflow: logs in one window, network in Charles Proxy, manual state inspection or print-debugging, maybe a custom inspector patched in. The friction slows development and hides subtle bugs behind layers of guesswork.

The consensus is clear: as soon as you’re on Hermes or a new-architecture project (React Native 0.74+), legacy tools are obsolete or broken—leading to context switches, loss of insight, and wasted time.

What is ReactoRadar? Overview and key features

ReactoRadar stands out by starting over: a standalone macOS desktop app built explicitly for Hermess, React Native 0.74+, and the new architecture. There’s no reliance on shaky old plugins, no hacky WebSocket proxies, and (crucially) no Chrome tab juggling. Launch it from your project root with two terminal commands and your full debugging workflow is unified—no config files, native modules, or build plugins required.

What it enables:

  • Console panel: Like Chrome DevTools, but for React Native. Collapsible object trees in logs, copy-on-click, persistent log level filters, lightning-fast Cmd+F search across thousands of lines, and filtering that sticks between reruns.
  • Network Inspector: Resizable/sortable columns, waterfall timelines, detailed request views, cURL export for any network call, fetch/XHR/axios coverage (even custom axios.create), and instant device-side network throttling.
  • Redux DevTools: Real-time stream of Redux actions, diffed key-by-key with highlighted changes and deep value equality. No more sifting through noisy logs trying to spot what actually changed.
  • AsyncStorage inspector: Intuitive, tied-in storage inspection—see and edit key-value pairs as fast as you can reload your app.

All of this is accessible on macOS for any React Native 0.74+ project running Hermes, with future-proofing for the new architecture.

How to set up and get started with ReactoRadar

Setup is fast—by deliberate design. There are no build-time hooks, native code patches, or dependency spaghetti to wrangle. Instead, you run two commands from your React Native project root:

npx reactoradar setup
npx reactoradar
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The first scans and prepares your project (no config files produced), the second launches the debugger. There’s no extra configuration—Hermes and the new architecture are supported out of the box as long as your project is on React Native 0.74+ and you’re running macOS. Once running, your app connects instantly, making every console log, network request, Redux action, and AsyncStorage operation visible.

That’s it: no native modules to link, no build plugins, no exotic tweaks. If you’re used to the “install these five plugins, edit three config files” world, this is a breath of fresh air—pure plug-and-play debugging.

How ReactoRadar enhances debugging: detailed console and network inspector features

Most debuggers split or drop critical features at the Hermes boundary—but ReactoRadar brings Chrome DevTools-level ergonomics to the native ecosystem. The console isn’t just a dump of plain strings: every message can be expanded, collapsed, or copied, and nested JS objects are rendered as reusable trees. Forget sifting logs for structure—one click and you’re at the value you need.

All logs can be filtered by level (info, warn, error, etc.) using a persistent multi-select dropdown. That filter survives debugger restarts, so once you’ve dialed in your preference (for example, hiding noisy info logs), the tool stays out of your way. Searching (Cmd+F) is global, covering thousands of lines—no more losing your place on big projects.

The network inspector is where most tools fail Hermes. Here, ReactoRadar shines: columns (Name, Status, Type, Size, Time, Waterfall) are resizable and sortable. Clicking a request shows raw and parsed headers, the request body, a live preview (as an object tree), and the full response. Need to reproduce an API call? Right-click, “Copy as cURL,” and paste it straight into your terminal. No more piecing together headers and payloads by hand.

Type filters let you zero in on exactly what you care about—Fetch/XHR, JS, images, fonts, docs, even websocket connections. solid device-side network throttling (Fast 3G, Slow 3G, Offline) can be toggled instantly from the panel, helping you nail down edge-case latency bugs without screwing up your whole simulator environment.

Compared to the last-gen tools—where network tabs didn’t exist, or only captured web traffic—ReactoRadar’s implementation restores the visibility that Chrome offers on web, but tailor-made for Hermess and RN. It closes a critical gap where legacy solutions simply stopped working.

[[IMG: ReactoRadar desktop app displaying a network timeline and expandable console log tree]]

Debugging Redux and AsyncStorage with ReactoRadar

Modern React Native apps depend on Redux or comparable state managers, and effective debugging means more than printing the action; you need to see what changed, where, and how. ReactoRadar’s Redux DevTools view streams dispatched actions in real time: click any action to expand the payload (again—collapsible object trees), and get an instant key-by-key diff. Changed store keys are highlighted—no more trawling for subtle bugs. You get a complete old → new value map, using deep equality comparison so that redux-internal updates aren’t mistaken for real app state changes.

AsyncStorage debugging is now built-in and visual. See every key, its value, and edit or delete them live. Unlike piecemeal log inspection, this gives instant feedback—a productivity boost for devs troubleshooting session bugs, persisted state, or edge-case flows.

For teams running heavier state or storage logic, this trustable, deep-inspection approach is a significant: root-cause analysis of app bugs goes from minutes to seconds.

[[IMG: Redux DevTools tab showing action diff and highlighted store key changes]]

Why ReactoRadar is the future of React Native debugging

Flipper’s deprecation leaves a void—the Meta-maintained plugin system is frozen, with no forthcoming updates for current RN releases. Manual workaround scripts don’t scale as the ecosystem evolves. Hermes and the new architecture are here to stay in React Native ≥0.74: ReactoRadar is built for this world from the ground up, not shoehorned in via fragile plugins or obsolete bridges. As more teams upgrade, it’s quickly establishing itself as the reliable baseline for debugging React Native apps—whereas the old approach (multiple patched tools, fragile plugin ecosystems) simply doesn’t keep up.

It’s also pushing forward: full out-of-the-box Hermes/New Architecture support, deep Redux and network integration, and developer-first UX. The architecture agnostic approach means that as the underlying JS engine or storage layer evolves, ReactoRadar adapts—future-proofing your toolchain from version churn. This resilience makes it a complementary layer even if you’re managing multiple React Native projects or onboarding new devs.

You can view the tool and contribute now via the original ReactoRadar Medium article, with open source potential on the horizon.

How to actually use ReactoRadar today

If you’re running a React Native project using Hermes and the new architecture (v0.74 or above) on macOS, setup is trivial. Start from your project root:

npx reactoradar setup
npx reactoradar
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That’s it. No config files needed, no native modules or plugins. Your app connects instantly—console logs, network requests, Redux actions, and AsyncStorage are all visible and interactive.

Supported environments:

  • React Native 0.74+
  • Hermes engine required/enabled
  • New Architecture enabled (auto-detected)
  • macOS (desktop app only at this time)

You can now debug all aspects of your app without stitching together half-broken tools.

The durable debugging layer for React Native’s new era

React Native developers forced to cobble together workarounds as Flipper and old debug tools recede have a genuine upgrade in ReactoRadar. It nails the basics—rich, filterable console, Chrome-style network timelines, real-time Redux diffs, and smooth AsyncStorage inspection—in a single, cohesive Mac app. With Hermes and new architecture compatibility out of the box, durable CLI setup, and zero config, it sets a new baseline: this is how React Native debugging should work in 2026. Set it up in minutes and feel the friction fall away.

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