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Expo vs Flutter vs React-native

Side-by-side NPM package comparison

Quick Verdict

Smallest Bundle

Flutter

12.7 KB gzipped

Most Popular

React-native

6.4M weekly downloads

Best Maintained

Expo

100/100 maintenance score

Highest Quality

Expo

50/100 quality score

Overall Pick

Expo

Best all-around based on popularity, size, maintenance & quality

expo icon

expo

Very Popular

Version 55.0.11

0
85
Excellent

The Expo SDK

Weekly Downloads
3.8M
31%
Bundle (gzip)
256.2 KB
Updated
Vulns
0

Health Score Breakdown

Maintenance
100
Popularity
100
Quality
50
Security
100
Stability
70
flutter icon

flutter

Niche

Version 0.0.5

0
45
Fair

Twitter oAuth Module for the 1.1 API

Weekly Downloads
337
13%
Bundle (gzip)
12.7 KB
Updated
Vulns
0

Health Score Breakdown

Maintenance
20
Popularity
20
Quality
50
Security
100
Stability
70
react-native icon

react-native

Very Popular

Version 0.84.1

0
85
Excellent

A framework for building native apps using React

Weekly Downloads
6.4M
25%
Bundle (gzip)
6.1 MB
Updated
Vulns
0

Health Score Breakdown

Maintenance
100
Popularity
100
Quality
50
Security
100
Stability
70

Choosing between Expo and Flutter and React-native? Here's a data-driven comparison based on real npm data — downloads, bundle size, health scores, and more — to help you decide which package fits your project best.

Downloads & Popularity

React-native leads with 6.4M weekly downloads — roughly 1.7x more. Expo has 3.8M weekly downloads. Flutter has 337 weekly downloads. Higher download counts generally indicate broader community adoption and a larger ecosystem of tutorials, plugins, and support.

Bundle Size

Flutter has the smallest gzipped bundle at 12.7 KB. Expo comes in at 256.2 KB. React-native comes in at 6.1 MB. A smaller bundle size means faster page loads, which improves user experience and Core Web Vitals scores.

Health Score Comparison

Expo has an overall health score of 85/100 (very good), with strong maintenance, security, popularity scores. React-native has an overall health score of 85/100 (very good), with strong maintenance, security, popularity scores. Flutter has an overall health score of 45/100 (moderate), with strong security scores. Health scores are calculated from maintenance activity, code quality, security posture, popularity, and stability metrics.

When to Choose Each

Choose Expo if you value large community support, actively maintained, strong security track record. Choose Flutter if you value strong security track record. Choose React-native if you value large community support, actively maintained, strong security track record.

Our Verdict

Both Expo and Flutter and React-native are solid choices for JavaScript development. Expo has the edge in overall health score (85/100), while each package brings unique strengths to the table. Evaluate them based on your project's priorities — whether that's community size, bundle efficiency, or maintenance activity — and choose the one that aligns best with your requirements.

Frequently Asked Questions

Is expo better than flutter?
It depends on your needs. Expo has a health score of 85/100 while Flutter scores 45/100. Expo has more weekly downloads (3.8M), suggesting broader adoption. Consider your specific requirements — bundle size, community support, and feature set — to decide which is the better fit.
Which has a smaller bundle size, expo or flutter?
Flutter has the smaller gzipped bundle at 12.7 KB. A smaller bundle means faster load times for your users, which can positively impact SEO and user experience.
How many developers use expo vs flutter?
Based on npm download statistics, Expo has approximately 3.8M weekly downloads and Flutter has approximately 337 weekly downloads. These numbers reflect package installations, not unique developers, but they indicate relative adoption levels.
Which is better maintained, expo or flutter?
Expo currently has the higher overall health score at 85/100. Expo has a maintenance score of 100/100 and Flutter scores 20/100 on maintenance.

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