MobX Architecture Setup for React Native Apps

You're building a React Native app and realize state management with Redux consumes up to 40% of your time writing boilerplate code. With 5+ years of React Native experience and 50+ delivered projects, we've found MobX to be the fastest way to implement reactive state management. Actions, reducers, selectors, normalization — all can be replaced with a concise observable store. MobX is a reactive state manager based on observable values. Instead of dispatching, use direct mutations; instead of mapStateToProps, use an observer wrapper. For React Native with mobx-react-lite, we get compact code without unnecessary wrappers. Contact us for a project assessment.

Our team sets up MobX architecture end-to-end, ensuring compatibility with TypeScript, navigation, and push notifications. We'll assess your project and propose timelines starting from 2 days. Get a consultation — we'll show you how to cut code by 60%.

Problems we solve

• Excessive boilerplate: Redux requires actionTypes, action creators, reducers, combineReducers for each module. MobX with makeAutoObservable automatically marks fields and methods for you.
• Async updates: After await, the action context is lost. We use runInAction for safe mutations — preventing accidental changes outside an action.
• Integration complexity: With React Native, useEffect and multiple subscriptions often cause issues. MobX with observer() automatically tracks only the used observables, minimizing re-renders.

Why MobX over Redux for React Native?

import { makeAutoObservable, runInAction } from 'mobx'; class ProfileStore { profile: UserProfile | null = null; isLoading = false; error: string | null = null; constructor(private userRepository: UserRepository) { makeAutoObservable(this); } async loadProfile(userId: string) { this.isLoading = true; this.error = null; try { const profile = await this.userRepository.getProfile(userId); runInAction(() => { this.profile = profile; this.isLoading = false; }); } catch (e) { runInAction(() => { this.error = (e as Error).message; this.isLoading = false; }); } } get displayName() { return this.profile ? `${this.profile.firstName} ${this.profile.lastName}` : ''; } } 

makeAutoObservable automatically marks fields as observable, methods as action, getters as computed. In strict mode, MobX requires action, so runInAction is mandatory for async scenarios — this prevents accidental mutations outside an action.

In the component:

const ProfileScreen = observer(({ userId }: { userId: string }) => { const { profileStore } = useStores(); useEffect(() => { profileStore.loadProfile(userId); }, [userId]); if (profileStore.isLoading) return <ActivityIndicator />; if (profileStore.error) return <ErrorView message={profileStore.error} />; return <ProfileView name={profileStore.displayName} />; }); 

observer() from mobx-react-lite makes the component reactive: re-render only when used observable properties change.

Performance comparison: MobX vs Redux

How to avoid unnecessary re-renders with MobX?

React Context re-renders all consumers when data changes, while MobX updates only dependent components. The table below shows metrics for a typical profile screen:

Context for DI

We pass stores via React Context without extra Provider wiring:

const StoreContext = createContext<RootStore | null>(null); export const useStores = () => useContext(StoreContext)!; // In App.tsx const rootStore = new RootStore(); <StoreContext.Provider value={rootStore}> <AppNavigator /> </StoreContext.Provider> 

RootStore creates all stores and passes dependencies between them.

The main argument for MobX

Compared to Redux, you get two to three times less code for the same functionality. No actionTypes, no mapStateToProps, no store normalization. For teams that value development speed over strictness, MobX wins. Official MobX documentation recommends using makeAutoObservable to simplify setup.

Counterargument: less predictability. Mutations happen directly, without an explicit dispatch log. For debugging, we connect mobx-react-devtools or mobx-logger.

What's included in the work

• Setting up RootStore with dependency injection.
• StoreContext + useStores hook.
• Basic store template with makeAutoObservable.
• Integration of mobx + mobx-react-lite with Babel (if needed).
• Unit tests of store logic via Jest (pure tests without React).
• Documentation on architecture and access.
• Video tutorial for the team.
• Post-deployment support (2 weeks).

Work process

1. Requirements analysis and current architecture review (1 day).
2. Store structure and relationship design (0.5 day).
3. Template and base store implementation (0.5 day).
4. Integration with app modules (authentication, profile, purchases) — 1 day.
5. Testing and debugging (0.5 day).
6. Handover and team training (0.5 day).

Estimated timelines

Setting up MobX architecture from scratch — from 2 to 4 days depending on app complexity. Cost is calculated individually — contact us for a project assessment.

Common implementation mistakes

• Forgetting to wrap async mutations in runInAction — get a warning in strict mode.
• Using one large store instead of several small ones — lose performance.
• Not using computed for derived data — on-the-fly recomputation slows rendering.

If you've encountered any of these issues — order a turnkey MobX setup. We've set up MobX in projects with 50+ screens and guarantee compatibility with TypeScript, navigation, and push notifications.