Find and compare the best heuristic evaluation agencies. Part of UX/UI Design.

Full-cycle software development delivering custom digital solutions with 18+ years of global IT expertise
Innowise is an international full-cycle software development company founded in 2007. Over the past 18+ years, the firm has grown into a multinational operation with 1,500+ professionals spanning offices across Europe, North America, and Asia. The company specializes in helping businesses build and scale digital products, modernize legacy systems, and adopt advanced technologies such as AI, blockchain, IoT, and AR/VR. With more than 1,600 custom software solutions delivered to clients in over 40 industries, Innowise has established itself as a dependable partner for organizations ranging from startups to large enterprises. The company operates on a full-cycle development model, covering every stage from initial consulting and business analysis through UX/UI design, engineering, quality assurance, deployment, and ongoing support. Its technical teams work across a broad technology stack including JavaScript frameworks, native and cross-platform mobile development, cloud platforms like AWS, Azure, and GCP, and enterprise systems such as SAP, Salesforce, and Microsoft Dynamics 365. Innowise also maintains dedicated practices in machine learning, big data analytics, robotic process automation, and metaverse development. Innowise has earned notable industry recognition, including placement on the Inc. 5000 list of fastest-growing U.S. companies and consecutive appearances on the IAOP Global Outsourcing 100 from 2022 through 2025. The company holds ISO 13485 certification for medical device software development. With a reported 93% client return rate, the firm emphasizes long-term partnership and consistent delivery quality. Innowise offers flexible engagement models including dedicated development teams, IT staff augmentation, and project-based outsourcing, enabling clients to scale technical capacity on demand.
“I was impressed by how good the code quality was right from the beginning. Their frequency and style of communication were to the point and never more than needed.”
— CEO, Zero Beta

Full-cycle product design and development helping startups launch, scale, and succeed faster
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.
“I had never worked with a team so talented while also being competitively priced.”
— Head of Brand Marketing, White Brands

AI-powered custom software development and staff augmentation delivering scalable web, mobile, and AI solutions
Valletta Software Development is a Malta-headquartered custom software development company that has been building digital products for startups and enterprises since 2009. Operating at the intersection of human engineering expertise and artificial intelligence, the firm specializes in end-to-end software delivery across web, mobile, AI/ML, DevOps, and quality assurance disciplines. With a team of over 200 engineers, designers, and project managers, Valletta Software serves clients primarily across Europe and North America, bringing a mature delivery methodology refined over more than 1,000 successfully completed projects spanning 11 industries. The company operates through two core engagement models. Its staff augmentation practice allows clients to rapidly scale their engineering capacity with mid-level and senior specialists who can begin contributing within days of engagement. Its end-to-end development practice handles full product builds from backend and frontend engineering through AI/ML implementation, offering startup-grade speed with enterprise-level quality. Valletta Software has built particular depth in fintech, e-commerce, healthcare, blockchain, and real estate, delivering solutions that range from social trading platforms and subscription-sharing marketplaces to remote vessel inspection systems and loan processing applications. What distinguishes Valletta Software in a crowded outsourcing market is its commitment to transparency and process rigor. The firm maintains a 15% bench level to ensure flexible scaling, employs only mid-level and senior engineers, enforces mandatory weekly code reviews, and provides granular task-level reporting. This approach has earned the company a 4.9-star rating on Clutch across nearly 50 verified reviews, a Clutch Global Award, and a 98% client recommendation rate.
“They found excellent solutions to every problem, so the project kept moving forward.”
— CIO, Beauty Products Company
For over a decade, we’ve helped leading brands launch 400+ digital products. Our expertise spans product strategy, UI/UX design, and software development. We believe no great venture should be held back by execution. That’s why we lead with strategy, work as true partners, and build products that scale. We help you define the right thing to build then design, develop, and launch it with clarity and purpose. Our partners have raised over $1B in funding—and counting.
“They conducted a thorough audit of our internal app and delivered clear, actionable insights that helped us move forward confidently.”
— Manager, Very Nice

Jett is a strategic product design and development company that goes beyond what's expected to achieve businesses' most daring goals.
“Jett has delivered a high-quality website and branding materials, helping the client secure funding for future growth. The team has an outstanding and adaptable project management style. They...”
— Founder, AlphBanx

Designatives is a Budapest-based creative design and technology agency working with ambitious startups and established brands across Europe and the US. We specialize in brand identity, website design and development, UI/UX, product design, motion, and 3D — combining strategic thinking with refined execution. Our work spans Web3, technology, hospitality, education, and forward-thinking B2B companies. What sets us apart is our design-first mindset. We don’t just make things look good — we build brands and digital platforms that create clarity, authority, and long-term value. Every project is approached with deep research, iterative refinement, and close collaboration. Beyond traditional branding and web projects, we also build AI-powered systems and custom digital tools, helping companies operate more intelligently and efficiently. At Designatives, the goal isn’t to blend in. It’s to elevate beyond the ordinary.
“Designatives came up with a great new logo and did an excellent job in redesigning and modernizing our website, as well as our whole branding material. We extended our collaboration to software...”
— Managing Director, Pannon Turfgrass
Intentional Experiences
Home to deep UX/UI knowledge and a unique blend of personalities, our multi-disciplinary team bridges the gap between business, design, and technology. With specialists in systems engineering, behavioural sciences, data science, and visual design, and more, we bring powerful credentials to every project.
UX leaders since 2009. We leverage rigorous mixed methods research to build intuitive experiences for GenAI, XR, and the next wave of emerging tech.
Since 2009, Key Lime Interactive has been the trusted UX partner for the Fortune 1000. We de-risk innovation by blending rigorous mixed-methods research with deep expertise in emerging technologies, including GenAI, XR, and Voice. Our mission is to humanize complex technology, turning deep user insights into a competitive advantage. From legacy platforms to the next frontier of AI, we deliver the actionable data and design strategy your brand needs to lead the market and build lasting loyalty.

Welcome to Loopstudio. We are the strategic secure software development partner for businesses that harness the power of technology to create competitive advantages. Our services are designed to support companies launch secure and intuitive software, modernize legacy systems, optimize data ecosystems, and create AI initiatives that deliver ROI. For either SaaS products or business applications, we are a trustworthy and experienced technology partner that delivers high quality software. Our LATAM-based team counts with hundreds of delivered projects under our belts and over a decade partnering with US companies. We partner with CTOs, CIOs, and Product Heads to build and transform exceptional web and mobile products. OUR CORE SERVICES: - MVPs & POCs - Legacy System Modernization - AI-enabled Processes - AI Adoption Roadmap and Projects - Data Engineering / Data Environment Optimization and Modernization - Product Revamp / Redesign - Fractional CTO / Architect - High-Performance Team - Design, Development, Data, and Management
We are designers who are good at crafting strategy
Kenseo is a strategy and design company. Our expertise lies in understanding what you and your customers want and crafting a design-driven strategy to improve the brand's overall value. We have built experiences that touched lives in a range of domains like Healthcare, Education, Hospitality, Entertainment, Food, IoT and Enterprise Management. Our quality is defined by our work culture. It thrives on freedom of expression and transparency in execution. This gives us the luxury to stay young at heart and thought, always.
AI-Powered Mobile Apps | iOS, Android, Flutter, React Native | MVP in 8 Weeks
WHY CLIENTS CHOOSE WEELORUM: We're not just another dev shop. We use AI-assisted development to deliver your mobile app faster, with fewer iterations, and at a fraction of the traditional cost. What makes us different: • AI-Accelerated Discovery Phase: 2 weeks instead of 4, same quality, half the cost • Claude AI + Cursor integration: 3x faster prototyping and code generation • Full-cycle delivery: Design → Development → QA → App Store launch • Long-term partnerships: avg 3+ years with our clients (Digiproduct — 5+ years) INDUSTRIES WE SPECIALIZE IN: • HealthTech (HIPAA-aware): Swim-Wise AI wellness platform • FinTech (Secure Payments): Jon D. Rock financial app • Social & Marketplace: Photo Shoot, Dating apps • E-Commerce: GetBooks digital bookstore • White-label for agencies: Digiproduct (5+ years) TECH STACK: iOS (Swift, SwiftUI) | Android (Kotlin, Jetpack Compose) | Flutter | React Native Node.js | Firebase | AWS | AI/ML Integration | Claude AI | Computer Vision OUR PROCESS: 1. Discovery Phase (2 weeks) — Research, wireframes, interactive prototype 2. Design (2–3 weeks) — UI/UX, design system, animations 3. Development (4–8 weeks) — Agile sprints, weekly demos, CI/CD 4. QA & Launch — App Store optimization, release management WHAT CLIENTS SAY: "We felt like collaborators, not clients" — Co-Founder, Social Media Startup "Released the final app in just three months" — CEO, Jon D. Rock "5+ years and counting" — Founder, Digiproduct
End-to-End Digital & Software Development Agency
With 25+ years leading the way in digital and UX, we’ve helped shape the future of user experience in Romania. But we didn’t stop here. From strategy and prototyping to development and performance-driven marketing, we guide our clients through every step of their digital journey. Our end-to-end approach ensures not only beautifully crafted experiences, but measurable business impact. All with a human touch. Supercharged by AI.