Metro
A high-performance bundler optimized for React Native development
- Also known as
- metro
What is Metro?
Optimized JavaScript bundler for React Native that prioritizes rapid feedback cycles and supports large-scale projects with thousands of modules.
Metro pricing
We don't have Metro's full plan breakdown yet (its pricing page resisted automated reading). Here's what we could confirm. Always check live pricing for exact numbers.
What Metro does
The capabilities that matter for bundlers, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.
- Dev server hmr
- ✓
- Native esm dev
- -
- Code splitting
- -
- Tree shaking
- -
- Css bundling
- -
- Zero config
- -
- Webpack plugin compat
- -
- Rollup plugin compat
- -
- Monorepo aware
- -
- Source maps
- ✓
Platform & deployment
Independently observed- CLI
- Self-hosted
Security & compliance
Known vulnerabilities: 0 (0 in the last 12 months) sourcea count reflects scale & disclosure, not quality
Metro FAQ
Common questions about Metro, answered from independent, dated evidence.
What is Metro?
Optimized JavaScript bundler for React Native that prioritizes rapid feedback cycles and supports large-scale projects with thousands of modules. It is indexed under Bundlers.
Source: https://metrobundler.dev
Is Metro free to use?
Metro is open source, so it can be self-hosted and used at no licence cost. It is released under the MIT licence. Pricing changes often, so verify at source before relying on it.
Source: https://metrobundler.dev
What platforms does Metro support?
Metro supports a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.
Source: https://metrobundler.dev
Can Metro be self-hosted?
Yes. Metro can be deployed self-hosted, so it does not have to run on the vendor's infrastructure.
Source: https://metrobundler.dev
Is Metro open source?
Yes. Metro is published under the MIT licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.
Metro alternatives
Other bundlers we track, ranked by the same independent score.
- ViteA modern, high-performance build system for web developmenthigh · 78%
- webpackJavaScript module bundler that packages code and assets for web browsershigh · 78%
- RollupA JavaScript bundler that optimizes ES modules for different runtime environments and removes unused code automaticallyhigh · 76%
- RspackA high-performance bundler that replaces webpack while maintaining API compatibilitymedium · 65%
- Turbopackmedium · 60%
- esbuildmedium · 66%
Compare Metro
Side by side against other bundlers, attribute by attribute, with a source on every value.
The vioscaleAI score: one lens on the evidence
Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for Metro, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Dependent projects | 91 | 0.08 | 7.3 | ✓ |
| Development activity | 59 | 0.12 | 7.1 | ✓ |
| Release cadence | 94 | 0.07 | 6.3 | ✓ |
| Capabilities | 46 | 0.08 | 3.8 | ✓ |
| Security score | 52 | 0.05 | 2.8 | ✓ |
| Stars | 71 | 0.03 | 2.3 | ✓ |
| Integrations | 0 | 0.05 | 0.0 | - |
| Security posture | 0 | 0.09 | 0.0 | - |
| Package downloads | 0 | 0.17 | 0.0 | - |
| Developer Q&A activity | 0 | 0.08 | 0.0 | - |
Computed . Re-weight it by intent, or see the full method.
All data & sourcesshow ↓
Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.
Activity
| Attribute | Value | Evidence |
|---|---|---|
| Commits last 30d | 73 | mediumsource · 2026-10-14 · 65% |
Adoption
Content
| Attribute | Value | Evidence |
|---|---|---|
| Faq | 5 items | mediumsource · 2026-09-10 · 67% |
Features
| Attribute | Value | Evidence |
|---|---|---|
| Capabilities | Source maps, Dev server hmr | mediumsource · 2026-10-14 · 60% |
Language
| Attribute | Value | Evidence |
|---|---|---|
| Primary | JavaScript | highsource · 2026-10-14 · 90% |
License
| Attribute | Value | Evidence |
|---|---|---|
| Spdx | MIT | highsource · 2026-10-14 · 95% |
Pricing
Release
Security
Is Metro the right choice for you?
Tell us the job, the constraints and what you weigh most, and we will rank Metro against the rest of the bundlers we index, using the same dated evidence weighted your way.
Free to run, no account needed to start. How the evaluation works
Is this your product?
This profile was built from public sources without asking you. You can take the badge below and use it anywhere, and you can claim the profile to correct anything we got wrong. Both are free, and neither moves Metro up or down: nobody can buy rank here, including you.
Take the badge
Live, always current, and free to use on your own site. It shows Metro's independent score and links back to this profile.
<a href="https://www.vioscale.ai/software/metro" target="_blank" rel="noopener">
<img src="https://www.vioscale.ai/badge/software/metro.svg" alt="Metro, verified on vioscaleAI" width="330" height="76" loading="lazy" />
</a>Markdown, for a README →
[](https://www.vioscale.ai/software/metro)Claim the profile
Verify you control the domain, then point us at the pages that state the facts about Metro and add your own description and media. Free, and it does not change the score.
- Correct anything wrong, with evidence
- Point our crawler at the pages that matter
- Write your own description and add media
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