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Washington, DC · App Development

App Development Company in Washington, DC

We build iOS, Android, and cross-platform mobile apps that DC users actually love. From membership apps for DC associations to field tools for federal contractors — delivered on time, on budget.

80+
Apps Shipped
4.8★
Avg App Store Rating
2M+
App Downloads
12wk
Avg MVP Timeline

App Development Services for DC Clients

Every engagement is tailored to DC market realities — regulatory complexity, competitive density, and client expectations.

iOS & Android Apps

Native apps built in Swift (iOS) and Kotlin (Android) for maximum performance and platform integration.

  • Swift & SwiftUI for iOS
  • Kotlin & Jetpack Compose
  • App Store & Google Play submission
  • Push notifications & biometrics

Cross-Platform Apps

React Native and Flutter apps that run natively on both iOS and Android from one codebase.

  • React Native development
  • Flutter development
  • Shared business logic
  • 60% cost savings vs native

Web Apps (PWA)

Progressive web apps that feel native but install from a browser — no App Store required.

  • Offline functionality
  • Home screen install
  • Push notifications
  • Near-native performance

Backend & API Development

Scalable backend infrastructure, REST/GraphQL APIs, and database architecture for your app.

  • Node.js / Python backends
  • PostgreSQL & MongoDB
  • AWS / Firebase / Supabase
  • Real-time data sync

UI/UX Design

User experience design that reduces churn and increases engagement — Figma prototypes before code.

  • User research & personas
  • Wireframing & prototyping
  • Design system creation
  • Usability testing

App Maintenance & Updates

Ongoing support, OS compatibility updates, and feature releases to keep your app competitive.

  • OS update compatibility
  • Performance monitoring
  • Feature sprints
  • Crash reporting & fixes
Why DC Businesses Choose Us

Built for the Washington, DC Market

We're based at 1717 N Street NW in DC. We understand local compliance, federal contracting nuance, and what DC clients expect — and we've built our process around it.

1717 N St NW, Washington DC
(301) 337-7268
hello@thoriumdc.com
5.0 · Trusted by DC businesses

Federal-Ready Security

Apps built with FedRAMP and FISMA considerations for government and contractor clients.

DC Association Expertise

We've built membership apps for DC trade associations, nonprofits, and member-driven organizations.

Performance-First

Sub-2s load times, 60fps animations, and optimized battery usage on every app we ship.

Rapid MVP in 12 Weeks

Get your app to market fast with our sprint-based development process. Validate before you over-invest.

Proven Results for DC Clients

Numbers that reflect real business impact — not vanity metrics.

4.8★
App Store Average
Across all client apps on iOS and Android
2M+
Total Downloads
Combined downloads across Thorium-built apps
82%
Day-30 Retention
Average 30-day user retention for client apps
12wk
MVP Delivery
Average time from kickoff to App Store submission

How We Work

A transparent, milestone-driven engagement from first call to launch.

1

Discovery & UX

User research, user journey mapping, and Figma prototypes. Approved before a line of code is written.

2

Sprint Development

2-week development sprints. Testable builds after every sprint on your real device.

3

QA & Beta Testing

TestFlight / Play Console beta. Real user testing and crash-free validation before App Store submission.

4

Launch & Iterate

App Store submission, launch support, and post-launch sprint cycles based on user analytics.

Frequently Asked Questions

Common questions from DC businesses considering app development.

Let's Build Your DC App

Get a free app strategy session. We'll scope your idea, recommend the right platform, and give you a realistic timeline and budget estimate.

Based at 1717 N Street NW, Washington, DC · hello@thoriumdc.com · (301) 337-7268