Custom iOS and Android app development services – Denver, CO

App Development

Your vision, built from scratch, for iOS and Android using Swift, Java, Flutter & React Native

For close to 15 years, Epic Apps has engineered custom iOS and Android solutions using Swift, Kotlin, Flutter, and React Native. Based in Denver, we specialize in high-performance mobile and web platforms, from complex enterprise software and disruptive startup MVPs to modernizing legacy systems. Our team manages the entire lifecycle—from initial conception to a final product built completely from the ground up to ensure long-term scalability and discoverability.

Custom website development services for Denver businesses

Web Development

Responsive Ruby on Rails, .Net, React & Custom-coded WordPress sites

Building on a legacy of engineering excellence, Epic Apps develops everything from high-impact marketing sites to robust enterprise platforms. Our Colorado-based team delivers custom-coded WordPress websites designed for SEO and AI discoverability, alongside heavy-duty enterprise web platforms built with Ruby on Rails, .NET, and React. We specialize in complex databases and seamless API integrations, ensuring every product is architected from the ground up for high-speed performance, security, and cross-device responsiveness.

Denver SEO services – search engine optimization for local businesses

SEO Services

Search Engine Optimization for Websites and Mobile Apps

At Epic Apps, we integrate search visibility into every digital product. Whether launching a new platform or scaling a legacy system, our approach ensures your website or mobile app is built for immediate indexing and maximum discoverability. We optimize for both legacy search and modern AI discovery, ensuring every digital product attracts high-quality traffic designed to convert from day one.

Rapid prototyping and UX/UI design for mobile apps – Denver software company

Rapid Prototyping

Wireframes, User Flows & UI Design

We transform vision into reality through an iterative process that validates your product before development. By blending user feedback with competitive analysis, we create high-fidelity models essential for obtaining proof-of-concept, securing stakeholder buy-in, and winning investor funding.

Dedicated Resources

Seamless integration with your IT team, delivering specialized skills to achieve your project goals efficiently

Scale your team easily based on project demands without long-term commitments or recruitment hassles. Access top-tier developers, designers, and IT specialists experienced in the latest technologies and best practices. Optimize your budget by leveraging our resources without the overhead costs of full-time employees.

Our Expertise

Epic consistently updates its technology stack, ensuring compatibility with the most recent and reliable operating versions as well as adherence to industry standards

01

Mobile Application Development

iOS

Swift, Objective-C

Android

Kotlin, Java

Cross Platform

Flutter, React Native

Database

SQLite

Web Application Development

02

Back-End

ROR, .Net, Java, PHP, NodeJS

Front-End

ReactJS, AngularJS, Bootstrap, JavaScript HTML5/CSS3

CMS

Custom-coded WordPress plugins and themes

Frameworks

Ruby–RoR, Java–Spring MVC, Grails, C#/C++ – .Net Framework, Python-Django, Laravel te

03

Blockchain-Based Solutions

Platform

Ethereum

Transfer Protocol

Stella

Smart Contract Programming

Solidity

ID & Access Management

Uport

Platform API

Web3.JS

Internet of Things (IOT)

04

Protocols

MQTT

Languages

C, C++

Operating Systems

Linux

MQTT Implementation

Paho

05

Machine Language
(AI)

Data Pipelines

Apache Airflow & Kafka

NLP Libraries

NLTK

Languages

Python

ML Libraries

TensorFlow, Scikit-learn, Theano