Years on Market
Mobile App Development
iOS and Android apps, built fast.
Native-quality iOS and Android apps with React Native or Flutter, auth, and push notifications.
11+ 1,200+ Successful Projects
23+ Countries Served
11 Industries Served
Key challenges
Where software projects go wrong before the build starts.
Unclear scope
Quotes you can't compare
Estimates arrive without a written scope, so the price moves as soon as work starts.
Slow delivery
Months before anything works
Long build phases with nothing to click, test or show until the very end.
Junior handoffs
The team changes after the sale
Senior people pitch the project and less experienced ones are left to build it.
Lock-in
Software you don't control
Code, hosting and credentials stay with the vendor, so leaving means starting again.
Our approach
Built by the team that scopes it, ships it and hands it over.
You need a mobile app — not a six-month conversation about one. We build React Native apps that run natively on iOS and Android from a single codebase: authentication, real-time data, push notifications, and whatever core workflow makes your product worth downloading.
No equity, no bloated retainers. One scoping session, a written spec, and a fixed timeline. You own the code on day one and every day after.
This is for founders, operators, and product teams with a validated use case who are ready to build. If you're still figuring out whether an app is the right solution, we'll tell you in the scoping session.
What We Offer
Eight weeks from scope to live on both app stores.
Discovery & Scoping
Days 1–3: define feature scope, tech decisions, and a written project plan before build starts.
UX & Screen Design
Days 4–8: Figma screens for every core flow. You approve before we write production code.
Auth & Core Architecture
Week 2: authentication, navigation shell, API layer, and database schema — the foundation everything builds on.
Feature Build Sprint
Weeks 3–6: core features, integrations, and backend wired end-to-end. Weekly demo builds for your feedback.
QA & Device Testing
Week 7: testing across iOS and Android devices, performance passes, and crash reporting set up.
App Store Submission
Week 8: App Store and Play Store submission, screenshots, metadata, and review support until approved.
The difference
How we run every engagement.
Four commitments that define how every DevNexum project runs.
Senior engineers only
Every line written and reviewed by experienced engineers. No junior handoffs.
Written scope first
Scope, timeline and quote agreed in writing before work begins.
You own everything
Code, credentials and IP handed over on delivery. No lock-in.
Direct access
Talk to the engineers building your product, not an account manager.
Case studies
View all case studiesReal work. Real outcomes.
Client projects we've shipped, with the results they delivered.
Process
How we build your mobile app
Scoping & Design
Core screens designed in Figma and approved by you before a single line of production code.
Core Build
Navigation, auth, offline support, and core feature set delivered in two-week sprints.
Integration & QA
Backend APIs, push notifications, and payments integrated — then tested on real devices.
Store Launch & Handover
App Store and Google Play submission, full codebase handover, and 30 days support.
How to engage
Get in touchThree ways to work together.
- Fixed scope
Project-Based Delivery
A defined outcome scoped, priced and delivered end to end. You know the cost, timeline and deliverables before work begins.
Best for a single, well-defined build
- Ongoing
Embedded Engineering Team
Senior engineers working directly on your product roadmap — sprint by sprint, with full context and continuity.
Best for continuous product development
- Support
Post-Launch Partnership
Ongoing development, maintenance and support after launch. We stay close to the codebase we built.
Best for products already in production
Tech Stack
Tools we use for this service.
Mainstream, hireable mobile tech — built so your next developer is productive from day one.
- React Native
- Expo
- TypeScript
- Node.js
- PostgreSQL
- Prisma
- REST / GraphQL
- Firebase (optional)
- Expo EAS
- App Store Connect
- Google Play Console
Industries We Focus
View all industriesIndustries we serve with this service.
Founders and product teams with a validated mobile use case — not teams still deciding if an app is the right channel.
FAQ
Common questions about Mobile App Development
Let's build something useful
Have something worth building?
Tell us what you're building. A senior engineer replies to every inquiry.
Reviewed by a senior engineer, not a sales rep
A written scope and quote, yours to keep
No obligation to work with us afterwards