React Native Development

React Native built to scale, without the rewrite.

We build, protect, and scale React Native products that survive due diligence and growth, so you do not pay for the same app twice.

$27M+ raised with founders we've engineered with
4 founder exits through acquisition
1M+ users supported across client products
15+ years building mobile products

Speed without senior judgment is the most expensive mistake in tech.

Whether your code was written by AI tools, offshore developers, a founding engineer who left, or your co-founder learning as they go. the problem is the same: you’re shipping fast, but nobody is asking whether you’re shipping right.

The mistakes that kill startups aren’t bugs. They’re decisions: the wrong architecture, the wrong database, the wrong framework, the shortcut that saves a week now and costs six months later.

That’s where we come in, not just to build, but to make sure what gets built can actually survive what comes next.

Build. Protect. Scale.

Three engagement lanes depending on where you are. all anchored in technical judgment.

Build With Judgment

Most teams build what you ask. We build what you actually need. and push back on the rest.

For founders who want a team that thinks like owners, not order-takers.

Protect What You've Built

Your codebase is a liability you can’t see. We audit the decisions that will cost you later and give you a clear plan.

For teams shipping fast who need a second set of eyes before it’s too late.

Scale With Confidence

You’ve got momentum. Now you need a technical partner who can grow with you and tell you what not to build.

For companies with mid-market revenue scale who want ongoing leadership without a full-time CTO.

When React Native is the right choice.

Choose React Native if:

  • You're pre-Series A and need to prove product-market fit fast
  • You need both iOS and Android without 2x budget
  • Your app is content, commerce, or business-logic driven
  • You want to ship features at a higher tempo, not monthly
  • You have limited engineering resources
  • You need over-the-air updates for instant bug fixes

Examples of successful React Native apps:

  • • Instagram (used for 95% of their app)
  • • Discord (handles millions of concurrent users)
  • • Shopify (powers their entire mobile commerce platform)
  • • Coinbase (manages billions in crypto transactions)
  • • Microsoft (Teams mobile app)

These aren't small apps. These are apps that handle scale better than most native apps.

When React Native is the wrong choice.

We turn down clients when React Native isn't the right fit. Here's when you should build native instead.

Choose native iOS/Android if:

  • You're processing video or audio in real-time
  • You need complex AR features or custom camera processing
  • You're building Apple Watch or Android Wear as primary platform
  • You have meaningful active usage and need to optimize performance and reliability
  • You're a consumer app competing on polish (Instagram-level)

Be honest about your constraints:

  • • If you have a mid six-figure product budget, you often cannot fund true native for both platforms
  • • If you need to ship in 8 weeks, native won't work
  • • If you're pre-product-market-fit, native is premature optimization

We've built both. We'll tell you which makes sense for your stage and budget. Most pre-Series A startups pick React Native. Most Series B+ startups still use React Native.

Get Expert Platform Recommendation

We'll analyze your needs and recommend the right approach.

Our React Native architecture approach.

Most agencies build React Native apps like websites. We build them like production systems that pass technical due diligence.

Business Logic Layer (Pure TypeScript)

  • • Domain models and entities
  • • Business rules and validation (Zod schemas)
  • • Use cases and application services
  • • Zero React dependencies
  • • 100% testable without UI

State Management Layer (Zustand)

  • • Application state stores
  • • API client interfaces
  • • State synchronization logic
  • • Cache management
  • • Offline-first capabilities

Presentation Layer (React Native)

  • • UI components and screens
  • • Navigation and routing
  • • Form handling and validation
  • • Platform-specific UI code
  • • User interaction logic

Why this matters for investors:

When VCs audit your code, they check if your business logic lives in React components. If it does, they see a mess that can't be tested or maintained. Our architecture keeps business logic separate, testable, portable, and investor-ready.

See Our Architecture in Action

We'll show you how clean architecture helps you pass due diligence.

Expo and over-the-air updates.

We use Expo for 90% of our projects. It's not a limitation, it's a superpower.

Instant over-the-air updates

You find a critical bug on Friday night. With native apps, you submit to app stores and wait 24-48 hours. With Expo Updates, you push a fix in 20 minutes. Users get it automatically.

Built-in native modules

Camera, location, notifications, sensors, all work without writing native code. No Xcode. No Android Studio. Just TypeScript.

Development speed

Hot reloading that actually works. Instant preview on real devices. Share builds easily. Ship features 2x faster.

Easy upgrades

New iOS or Android version? Update one package. Done. Native projects break on every OS update.

Real-world impact:

On production apps we use over-the-air updates to ship critical fixes when the stack allows it, so users are not blocked on store review for every regression.

Build with Expo Updates

Ship faster and deploy fixes instantly with our Expo expertise.

TypeScript, Zustand, and Zod: Our stack.

We use the same stack for every React Native project, not because we're lazy, but because this stack actually works at scale.

TypeScript for everything

Type safety catches bugs before production. IDE errors as you type. Safe refactors. Faster onboarding.

Zustand for state management

Redux requires 200 lines of boilerplate for simple features. Zustand does it in 20 lines. Clean, readable state.

Why we don't use Redux:

  • • Too much boilerplate (5x more code)
  • • Harder to maintain (complex mental model)
  • • Slower development (more files, more ceremony)
  • • Overkill for 99% of apps

Zod for runtime validation

TypeScript checks types at compile time. Zod validates data at runtime. API returns invalid data? Zod catches it. Type-safe end-to-end.

Runtime validation is standard in our React Native work because API and contract drift shows up in production first.

React Native performance optimization.

Slow apps hurt retention. We profile, measure, and fix the usual React Native bottlenecks: re-renders, images, JS thread work, navigation, and bundle shape.

Common problems

  • • Unnecessary re-renders
  • • Image loading bottlenecks
  • • JavaScript thread blocking
  • • Navigation performance issues
  • • Large bundle sizes

What we optimize for

  • • Startup and transition paths that feel responsive on real devices
  • • List and scroll stability under production data volumes
  • • Memory and bundle discipline appropriate to your release constraints
  • • Power and thermal behavior as part of normal profiling, not one-off tuning
Optimize Your App Performance

We'll audit and improve your app's performance.

React Native vs Flutter: The honest comparison.

Founders ask us about Flutter. Here's what we tell them.

Choose React Native if:

  • • You have web developers (React skills transfer)
  • • You want over-the-air updates
  • • You need to hire developers easily
  • • You might build a web app (share business logic)
  • • You need mature ecosystem and packages

Choose Flutter if:

  • • You need extremely custom UI animations
  • • You're building a design-heavy consumer app
  • • You have Dart developers already
  • • You prioritize UI polish over development speed
  • • You don't need over-the-air updates

Flutter is great technology. But React Native wins for most funded startups because of ecosystem, hiring, and Expo's over-the-air updates.

React Native testing strategy.

Apps with poor test coverage fail technical due diligence. We implement testing that catches bugs before users do.

Our testing pyramid

  • Unit tests (70%): Test business logic and utilities.
  • Component tests (20%): Test components in isolation with mocks.
  • End-to-end tests (10%): Full flows on real devices.

Quality bars we hold with you

  • • Test and review discipline aimed at technical due diligence, not vanity coverage numbers
  • • Release process with staging, monitoring, and rollback judgment
  • • Performance work tied to real user journeys, not benchmark theater
  • • Store listing and review posture handled as part of shipping, not as a separate vanity metric

VCs review your test posture during due diligence. We work toward coverage and review habits that stand up to that scrutiny without treating a single metric as the product.

Implement Testing Strategy

We'll set up comprehensive testing that passes due diligence.

React Native security and compliance.

One security vulnerability kills your funding round. We implement security that passes audits.

Security measures we implement

  • • OAuth 2.0 and JWT token management
  • • Biometric authentication (Face ID, Touch ID)
  • • AES-256 encryption for data at rest
  • • TLS 1.3 for data in transit
  • • Certificate pinning to prevent MITM attacks
  • • Jailbreak and root detection

Compliance we help achieve

  • GDPR: EU data protection requirements
  • CCPA: California privacy compliance
  • SOC 2 Type II: Security controls investors expect
  • HIPAA: Healthcare data protection (if applicable)
  • PCI DSS: Payment security (if applicable)

Your Series A investors will request these documents. We make sure you have them.

PicklePlay: embedded engineering through acquisition.

Context

PicklePlay is a lead Vermillion case study: multi-year embedded React Native work through acquisition by Universal Tennis. The work was architecture, shipping cadence, and production judgment in a live consumer app, not a one-off build.

What we owned

We carried the mobile engineering function alongside the founding team: refactors and releases, subscription and growth-facing surfaces, and the operational discipline that keeps a consumer app shippable under real usage.

Outcome

PicklePlay was acquired by Universal Tennis. That exit is on our public record as a named client outcome.

Ready to scale like PicklePlay?

Get Your Success Roadmap

Timeline & Investment.

Week 1-2: Technical Audit

We audit your requirements, competitive landscape, and technical risks. You get a detailed roadmap and architecture plan.

Week 3-12: Core Development

We build your React Native app in 2-week sprints. Demos on a cadence we agree. Continuous feedback. Adjust as needed.

Week 13-14: Testing & QA

Comprehensive testing on 20+ devices. Performance optimization. Bug fixes. App store preparation.

Week 15-16: Launch & Handoff

App store submission. Launch support. Team training. Documentation handoff.

Investment:

  • • MVP: scoped per proposal (8-12 weeks typical)
  • • Full product: scoped per proposal (16-20 weeks typical)
  • • Enterprise app: scoped per proposal (20+ weeks common)
Discuss Your Timeline

Does any of this sound familiar.

  • You've spent heavily on development and you're not sure what you actually got
  • Your "temporary" technical decisions from 6 months ago are still running in production
  • You don't have anyone on your team who can honestly tell you if your code is good
  • You're about to raise money, get acquired, or scale. and you're not sure your tech can handle it
  • The features work, but you have no idea if the foundation is solid
  • You've been burned by a dev shop before and you're cautious about who to trust next

If you nodded at even one of these. let’s talk. The first call is free and there’s no pitch.

Book a 15-min Strategy Call

Free 15-minute strategy call. No pitch, just clarity.

Frequently asked questions.

How is this different from hiring a dev shop?

Most dev shops are order-takers. We review the plan, challenge assumptions, and build with the full picture in mind. You’re not paying for code. You’re paying for judgment that saves expensive mistakes.

What if we just need development work?

That’s fine. We do plenty of straight development work. with one difference: we’ll still flag risks and push back on bad decisions. That’s not an upsell. It’s how we work.

Can we start small?

Yes. Start with a free 15-minute strategy call, then choose the lightest engagement that makes sense. Most clients start small and expand once we prove value.

Is React Native production-ready?

Yes. Instagram, Discord, Shopify, and Microsoft use React Native in production. Billions of users interact with React Native apps daily.

Can React Native handle complex apps?

Yes. We've built marketplace, fintech, health, and social apps. React Native scales to millions of users.

What about performance?

React Native performs close to native for most use cases. We've optimized apps to 60fps scrolling and sub-2-second load times.

Why Expo instead of bare React Native?

Expo provides over-the-air updates, easier testing, and faster development. We use bare workflow only when you need custom native code.

Why Zustand over Redux?

Zustand requires far less boilerplate with the same functionality and cleaner code.

How long does React Native development take?

MVP: 8-12 weeks. Full product: 16-20 weeks. Faster than native because you ship both platforms from one codebase.

What happens next.

Book a free 15-minute strategy call. We'll review your requirements and tell you if React Native is the right choice, plus the roadmap to scale.

No pressure. No sales pitch. Just honest advice from engineers who've built React Native apps with extensive React Native experience.

Book a 15-min Strategy Call

Session covers:

  • • React Native feasibility analysis
  • • Architecture and tech stack recommendations
  • • Timeline and milestone breakdown
  • • Investment estimate and payment options
  • • Team structure recommendations

If we decide to do a Technical Health Check (quoted on inquiry), that fee is credited toward your first month.