Web & Mobile Apps.

+ Mobile App Agency

Web and mobile apps engineered for product-market fit and built to scale. UX-led design, native iOS and Android development, and full-stack engineering for SaaS platforms, fintech tools, e-commerce, and consumer apps that need to ship fast and grow faster.

Custom web and mobile app design and development for SaaS platforms, e-commerce, fintech, and enterprise tools. Built for startups and scaling businesses.

Web & Mobile Apps.
+ Our clients
Boehringer
Buddha Brands
Chevrolet
Electroimpact
F1
Fiat
FIU
Great Northern Docks
GWM
Harley Davidson
Hyundai
IFF
Legrand
Magellan Jets
NASCAR
Neptune Software
Puma Energy
Sandler
Savvas
Boehringer
Buddha Brands
Chevrolet
Electroimpact
F1
Fiat
FIU
Great Northern Docks
GWM
Harley Davidson
Hyundai
IFF
Legrand
Magellan Jets
NASCAR
Neptune Software
Puma Energy
Sandler
Savvas
+ Overview

As a mobile app design and development agency, CR38® partners with founders and product teams to ship apps that users love and businesses can scale. Whether you're launching a SaaS MVP, building a consumer-facing iOS/Android app, or modernizing an enterprise platform, our team handles UX research, UI design, prototyping, development, and launch, end to end.

Our work has powered platforms with millions of users, generated 5x revenue growth post-launch, and delivered measurable conversion improvements for B2B and B2C clients.

+ Our process

How we work.

Discovery

User research, requirements & technical scoping

UX Design

User flows, wireframes & interactive prototypes

UI Design

Visual design, component library & style guide

Development

Front-end + back-end, APIs & integrations

Launch

Testing, deployment, monitoring & handoff docs

+ What you get

Deliverables
& outcomes.

Product strategy first

We start with the why. User research, competitive analysis, and feature prioritization, so you build what matters.

UX research-driven design

User interviews, journey mapping, and usability testing shape every screen. We design for real behavior, not assumptions.

Native-quality UX

Whether iOS, Android, or responsive web, we follow platform conventions and accessibility standards (WCAG AA, Apple HIG, Material).

Production-ready engineering

API integration, secure auth, analytics, error handling, and performance, engineered for production from day one.

Scalable design systems

Component libraries, design tokens, and documentation that scale as your team and product grow.

MVP to enterprise

We ship lean MVPs in weeks and architect enterprise-grade platforms over months. Engagement scope flexes with your stage.

Web & mobile app services we deliver

SaaS platforms. Multi-tenant dashboards, admin panels, role-based access, billing flows, onboarding sequences, and customer-facing portals, designed for retention and engineered for scale.

E-commerce experiences. Shopify Plus, WooCommerce, custom headless storefronts. Conversion-optimized product pages, checkout flows, and post-purchase journeys.

Fintech & payments. KYC flows, transaction dashboards, wallet UX, and compliance-aware design for fintech, banking, and payment platforms.

Mobile apps (iOS & Android). Native-quality app design, cross-platform development with React Native or Flutter, and App Store / Play Store launch support.

Enterprise tools. Internal platforms, B2B dashboards, data-heavy interfaces, and operational tools where usability directly impacts productivity.

+ Process

How we approach app design and development.

Discovery & product strategy

What problem are you solving? For whom? Why now? We answer these before touching design tools.

UX research

User interviews, competitive teardowns, jobs-to-be-done analysis. We map user goals to product features.

Information architecture

User flows, navigation patterns, screen inventories. The skeleton of your app, decided before any visuals.

UI design + prototyping

High-fidelity Figma designs, interactive prototypes, and design system foundations. Stakeholders test before code is written.

Development

Modern stack — React, React Native, Next.js, Node.js, Swift, or Kotlin depending on platform. Clean code, tested, and CI-ready.

Launch + iterate

Beta releases, analytics, user feedback loops, and rapid iteration on what works.

Mobile app design vs. web app design: what's the difference?

Mobile apps live on a small screen, in a thumb-driven interface, often offline, and compete with every other app on the device. Web apps run in browsers, scale across screen sizes, and rely on persistent connectivity.

The differences shape every design decision, from gesture vocabulary and information density to load priorities and offline behavior. Our team designs for the constraints and strengths of each platform, not by transposing one experience onto the other.

If your product needs both, we design and build a unified experience layer, shared design tokens, consistent core flows, and platform-appropriate adaptations.

+ Why CR38®

Why CR38® for your next app.

01

End-to-end ownership

Strategy, research, design, and development under one roof. Fewer handoffs, faster decisions, better outcomes.

02

Product-thinking, not pixel-pushing

Every decision ties back to user value and business outcomes. We push back when something doesn't make sense, and we ship when it does.

03

Proven scale

Apps and platforms we've designed have served millions of users, supported multi-million-dollar revenue lines, and powered global brands.

04

Founder-friendly

Many of our clients are founders. We speak the language of MVPs, runway, and traction. We move fast without skipping the work that matters.

+ Hear it from our clients

Testimonials.

★★★★★"

The quality of the design was impressive. We're looking forward to continue our collaboration with CR38.

Sarah M.TechVentures Co.
★★★★★"

CR38 is on top of their game 100%. They are a stand-out design firm.

James R.Creative Studio
★★★★★"

Their team was constantly challenging themselves and my team to arrive at the best solution. They took full responsibility for the project, and every credit for its resulting success belongs to them.

Michael T.Venture Labs
★★★★★"

CR38 team's ability to understand our business model is impressive. They get our business, which is exactly what we need. The quality of their work has exceeded our expectations.

Emma L.Digital Inc.
★★★★★"

CR38 has remarkable designers, which allows them to produce exemplary work. We consider them a trusted partner because they're very reliable.

David K.BrandCo
★★★★★"

Despite the time zone difference, CR38 establishes seamless communication with the client. The team is accommodating, understanding, and creative.

Sofia A.Global Agency
★★★★★"

We have been working with CR38 for a while now, and the service is unmatched when it comes to speed, efficiency, and execution.

Robert H.Scale Digital
★★★★★"

CR38 team's creativity in designing easy-to-follow, intuitive, and efficient layouts is truly impressive. Their work has exceeded my expectations!

Anna P.Creative Hub
+ FAQ

Frequently Asked
Questions.

How much does it cost to design and develop a mobile app?
+
MVPs start around $25,000 USD. Production-grade native apps with backend, integrations, and full QA typically range from $60,000 to $250,000 USD. Enterprise platforms can scale higher. We quote per project after discovery.
How long does an app project take?
+
MVPs ship in 8-12 weeks. Full production apps with native iOS + Android, backend, and integrations take 4-8 months. We provide weekly progress reviews and shippable milestones throughout.
Do you build native iOS, native Android, or cross-platform?
+
All three. We recommend the best fit during discovery based on your team, audience, and feature requirements. React Native and Flutter are common picks for startups; native Swift/Kotlin for performance-critical or platform-specific apps.
Can you help with App Store and Play Store submission?
+
Yes. We handle store assets (screenshots, descriptions, listings), submission, and post-launch issue resolution. We've shipped apps approved on the first review by following Apple and Google guidelines closely.
Do you offer post-launch support and feature iteration?
+
Yes. Most app clients keep us on retainer for ongoing design, development, analytics review, and feature work. Apps need to evolve continuously to stay relevant.
Can you work with our existing engineering team?
+
Absolutely. We frequently embed with in-house teams, hand off production-ready Figma files, and collaborate on design systems and code reviews.
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