
The Bottom Line
- Price
- Free, no paid tier. Compare plans
Key facts
- Simplifies state management for JavaScript applications.
- Uses functional reactive programming for automatic UI updates.
- Framework-agnostic and improves developer productivity.
Pros
- Simple state management
- Observable pattern
- Less boilerplate
- Good performance
- Active development
Cons
- Magic can confuse
- Learning curve
- Less popular than Redux
- Debugging harder
- Pattern differences
What is MobX?
Ratings Across the Web
MobX holds an aggregate rating of 4.3 out of 5 from 67 reviews across SourceForge, last checked September 3, 2026.
Ratings aggregated from independent review platforms. Learn more
Key Features
- State management
- Observable state
- Automatic tracking
- Reactions
- Computed values
- Simple and scalable
Pricing Plans
Pricing checked Oct 1, 2026
| Plan | Price | Details |
|---|---|---|
| Free | $0 |
+2 more Show less
|
Is MobX worth the price?
MobX offers an incredibly fair and generous pricing model as it is entirely free and open-source.
There are no associated costs, making it accessible to all developers. This is best for any JavaScript developer or team looking for a robust state management solution without budget constraints.
Reviews

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Across 67 verified user reviews on SourceForge
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MobX FAQ
How does MobX simplify state management in JavaScript applications?
Which teams would benefit most from using MobX?
How does MobX compare to Redux for state management?
What are the main trade-offs when choosing MobX for state management?
How is MobX priced?
Can MobX be used with various UI frameworks?
Source: mobx.js.org