Mobx vs Zustand

Side-by-side NPM package comparison

mobx

Very Popular

Version 6.15.0

73
Good

Simple, scalable state management.

Weekly Downloads
3.0M
34%
Bundle (gzip)
17.3 KB
Updated
Vulns
0

Health Score Breakdown

Maintenance
60
Popularity
100
Quality
50
Security
100
Stability
70

zustand

Extremely Popular

Version 5.0.11

85
Excellent

🐻 Bear necessities for state management in React

Weekly Downloads
23.3M
43%
Bundle (gzip)
490.0 B
Updated
Vulns
0

Health Score Breakdown

Maintenance
100
Popularity
100
Quality
50
Security
100
Stability
70

Choosing between Mobx and Zustand? 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

Zustand leads with 23.3M weekly downloads — roughly 7.8x more. Mobx has 3.0M weekly downloads. Higher download counts generally indicate broader community adoption and a larger ecosystem of tutorials, plugins, and support.

Bundle Size

Zustand has the smallest gzipped bundle at 490.0 B. Mobx comes in at 17.3 KB. A smaller bundle size means faster page loads, which improves user experience and Core Web Vitals scores.

Health Score Comparison

Zustand has an overall health score of 85/100 (very good), with strong maintenance, security, popularity scores. Mobx has an overall health score of 73/100 (good), with strong security, popularity scores. Health scores are calculated from maintenance activity, code quality, security posture, popularity, and stability metrics.

When to Choose Each

Choose Mobx if you value large community support, strong security track record. Choose Zustand if you value massive community and ecosystem, minimal bundle footprint, actively maintained, strong security track record.

Our Verdict

Both Mobx and Zustand are solid choices for JavaScript development. Zustand 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 mobx better than zustand?
It depends on your needs. Mobx has a health score of 73/100 while Zustand scores 85/100. Zustand has more weekly downloads (23.3M), 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, mobx or zustand?
Zustand has the smaller gzipped bundle at 490.0 B. A smaller bundle means faster load times for your users, which can positively impact SEO and user experience.
How many developers use mobx vs zustand?
Based on npm download statistics, Mobx has approximately 3.0M weekly downloads and Zustand has approximately 23.3M weekly downloads. These numbers reflect package installations, not unique developers, but they indicate relative adoption levels.
Which is better maintained, mobx or zustand?
Zustand currently has the higher overall health score at 85/100. Mobx has a maintenance score of 60/100 and Zustand scores 100/100 on maintenance.

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