Top Mobile App Design Agencies in Denver, Colorado

Phenomenon Studio

Verified

Full-cycle product design and development helping startups launch, scale, and succeed faster

5.0(5)

5.0

5 reviews

Phenomenon Studio is a full-cycle product design and development company founded in 2019. What began as a four-person team has grown into a globally distributed studio of over 70 designers, developers, strategists, and product specialists operating across offices in Poland, Estonia, Switzerland, Canada, the United States, and Ukraine. The company serves as a long-term product partner for startups and scaling businesses, guiding them from initial validation through launch, growth, and optimization. Their client portfolio spans regulated and high-growth sectors including SaaS, FinTech, Healthcare, EdTech, and Web3, with HIPAA and GDPR certifications enabling them to operate confidently in compliance-sensitive environments. The studio offers an integrated service model that covers research, design, and engineering under one roof. On the research and strategy side, they conduct UX audits, product discovery workshops, and technical feasibility assessments. Their design capabilities encompass UI/UX for web and mobile applications, branding and identity systems, website design, and interactive prototyping. On the development front, they build custom web and mobile applications, deliver rapid MVP builds, and offer no-code and blockchain development. A hallmark of their approach is developer-ready design — every component is constructed with design tokens, accessibility standards, and real-world engineering constraints in mind, resulting in smoother handoffs and faster implementation cycles. Phenomenon Studio has earned a 5.0/5.0 rating on Clutch with 50+ reviews and was named a Clutch Top Product Design Company in 2024. Their client outcomes include over 120 product launches, more than million in funding raised by their clients collectively, a 35%+ average conversion boost post-redesign, and a 98% customer satisfaction rate. Notable clients include Y Combinator-backed OneText, TechStars graduate Isora (trusted by Berkeley and Yale), and Nomupay. The studio differentiates itself through a direct-access partnership model where clients work with senior practitioners rather than layers of account management.

Clay Global

Verified

Top UI/UX design, web design, and branding agency in San Francisco

5.0(11)

5.0

11 reviews

Clay is a global branding and UX design agency that creates transformative digital experiences for startups and enterprise teams. The agency combines branding, UX, web design, development, content, and AI-powered workflows to build brands, digital products, and websites that are clear, scalable, and memorable. Clay brings together cross-disciplinary senior teams to deliver fast, high-impact work across platforms and brand touchpoints.