Searching for a usability testing agency that can ensure your products and applications properly function? We evaluated numerous success stories, client feedback, and service scopes to compile a list of the best usability testing companies. Browse our directory and refine your search based on location, area of expertise, budget, and other criteria to find a suitable match for your needs.

Best Usability Testing Companies

5 Companies - Rankings updated: September 03, 2026

Every UI/UX design agency on DesignRush has been evaluated for its design expertise, service reliability, and verified client reviews. Some features may be paid.

Usability Testing × Other × $25,000 - $50,000 × Clear Filters
  • Flyaps

    Verified Verified by the DesignRush team for authenticity and credibility. Award Winner Recipient of a Best Design Award for outstanding work.

    AI & Cloud Software Engineering

    Flyaps is an AI & cloud engineering company headquartered in New York, with delivery teams in Ukraine and Poland. For 12+ years, we've helped early-stage startups scale into unicorns and modernized legacy businesses into IT leaders...

    Top Services:

    • Software Development
    • AI Development
    • IT Services
    • DevOps Consulting
    • Cloud Consulting
    • Show more
    Location
    New York City, New York
    Number of Employees
    Under 49
    Average Hourly Rate
    $49/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    9 Projects Listed

    Flyaps Services

    • Software Development
    • AI Development
    • IT Services
    • DevOps Consulting
    • Cloud Consulting
    • Web Development
    • Staff Augmentation
    • Web Design
    • Business Consulting
    • IoT
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • NetSpark IP & Telecom
    • MyersBiz Net
    • Yaana
    • Airbyte
    • Nextgen Clearing
    • JOIN
    • Relocate
    • Shoelace Wireless
    Data sourced from the agency's DesignRush profile

    Flyaps Reviews & Testimonials

    • Andrew Stetsenko
      Andrew Stetsenko Founder at GlossaryTech, backed by Dice
      5.0

      Python Django Review from Andrew Stetsenko

      We partnered with Flyaps to build the GlossaryTech Chrome Extension from scratch, including the backend for tech terminology analysis. The goal was to help recruiters, sales professionals, and other non-technical specialists in IT quickly understand the technical terms they encounter every day. The first release shipped back in 2017, long before today's AI tools were available off the shelf. Flyaps built a custom tokenization layer on top of NLTK library to resolve the ambiguity problem - distinguishing "Go" the language from "go to the shop," or "Swift" the framework from the adjective, while also correctly recognizing multi-token terms like "Ruby on Rails" or "Amazon Web Services". It was a pragmatic, precise solution that made the extension genuinely usable from day one. The outcomes have validated that early bet. GlossaryTech now holds "Featured" status in the Chrome Web Store, has passed 25,000 downloads, and consistently serves 10,000+ weekly active users and 2,000+ daily active users. For a niche professional tool, that level of organic, sustained engagement is rare - and it traces directly back to the technical foundation Flyaps put in place. Beyond the engineering, what stood out was how Flyaps engaged with the product itself. They contributed to architecture decisions, flagged edge cases early, and treated scope conversations with honesty rather than upsell. Communication was straightforward throughout, deadlines were met, and the codebase has held up well as we've extended the product over time. I'd recommend Flyaps to anyone looking for a partner who combines solid engineering with genuine product thinking. They've been central to GlossaryTech's success and continue to be a team we trust.

    • Dariia Ryzhova
      Dariia Ryzhova Product Manager at Nextgen
      4.7

      Software Development Review from Dariia Ryzhova

      Our collaboration with Flyaps has lasted for several major projects, of which I personally worked with them on two. I am very satisfied with the level of expertise (both technical and domain), the involvement and responsibility of the teams, and the quality of delivery. We successfully brought 2 major products to life together. Flyaps teams have diverse specializations, so I had the opportunity to attract consultants from different fields: software developers, including high-level architects, DevOps, QA, and business analysts. The teams have a modern technology stack and are experienced in Agile development. This allowed for smooth integration with internal teams and processes. It is also important to note that Flyaps provides technical consulting on demand, and this was very valuable service as well. Overall, I can recommend working with Flyaps as a reliable and high-quality partner.

    • ТОВ ХОТНАЙТС
      ТОВ ХОТНАЙТС Review from Google
      5.0

      ТОВ ХОТНАЙТС's Review Sourced from Google

      Flyaps delivered outstanding results for our e-commerce store! They built a visually stunning and high-performing website that perfectly captures our brand. Since launching, our site speed has improved by over 60%, and we've seen a noticeable increase in our conversion rate. Their team's technical expertise is top-notch, and the new admin panel they created has made managing our operations so much easier. I am happy to recommend this team of professionals.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Simplifying life through innovation

    At Linnify, we help visionary companies accelerate their digital development efforts. From growing startups to tech-driven organizations, we support you in defining, designing, building, and successfully launching on time through dedicated product teams...

    Top Services:

    • Software Development
    • Web Development
    • AI Development
    • Mobile App Development
    • Staff Augmentation
    • Show more
    Location
    Cluj-Napoca, Romania
    Number of Employees
    Under 49
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    4 Projects Listed

    Linnify Services

    • Software Development
    • Web Development
    • AI Development
    • Mobile App Development
    • Staff Augmentation
    • Web Design
    • UI/UX Design
    • Software Testing
    • Cloud Consulting
    • Market Research
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Readability
    • drd
    • Joyscore
    • Stailer
    • NEWtritionIQ
    • Medefine
    Data sourced from the agency's DesignRush profile

    Linnify Reviews & Testimonials

    • GABRIEL SINCRAIAN
      GABRIEL SINCRAIAN Review from Google
      5.0

      GABRIEL SINCRAIAN's Review Sourced from Google

      I worked with a few freelancers before and only had headaches. Since I discovered Linnify, everything has been going smoothly. They are professional, deliver exactly what they promise, and the app works flawlessly. Everyone is happy. I recommend!

    • Camil Moldoveanu
      Camil Moldoveanu Review from Google
      5.0

      Camil Moldoveanu's Review Sourced from Google

      Linnify has been a reliable partner in our software development journey, providing excellent quality and innovative solutions. This is why we built this collaboration based on expertise trust. Their development team is knowledgeable and attentive, enhancing our user experience significantly. We recommend Linnify to anyone looking for one of the best product development companies in Cluj.

    • Paul Oarga
      Paul Oarga Review from Google
      5.0

      Paul Oarga's Review Sourced from Google

      Great solutions, incredible team and enviable work ethic. Highly recommend them for any tech product, branding or idea you want to boost into reality.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • We're the Creative Thinkers & Digital Doers on Your Side.

    Contra is a full-service web design and digital marketing agency based in London, specialising in crafting award-winning websites and comprehensive marketing strategies for law firms...

    Top Services:

    • Web Design
    • Web Development
    • Digital Marketing
    • Branding
    • SEO
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    Under 49
    Average Hourly Rate
    $85/hr
    Minimal Budget
    $25,000 - $50,000

    Contra Agency Services

    • Web Design
    • Web Development
    • Digital Marketing
    • Branding
    • SEO
    • PPC
    • Content Marketing
    • CRO
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Hudgell Solicitors
    • Magrath Sheldrick
    • University of Cambridge
    • National Film & Television School
    • IDR Law
    • Good Salon Guide
    • The Royal Society
    • Childnet Digital Leaders
    • St. Martin in the Fields
    • MBL Seminars
    Data sourced from the agency's DesignRush profile

    Contra Agency Reviews & Testimonials

    • Life with Keeks
      Life with Keeks Review from Google
      5.0

      Life with Keeks's Review Sourced from Google

      Very good agency help me a lot, the people are so friendly and understanding and patient 100/ would recommend

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • We Design, Develop and Deliver.

    At Cinnova, we treat your business as our own, combining design-thinking, engineering, and business acumen to solve complex challenges. Our flexible engagement models ensure tailored solutions that drive growth and efficiency...

    Top Services:

    • Web Development
    • Mobile App Development
    • Software Development
    • UI/UX Design
    • Web Design
    • Show more
    Location
    Cincinnati, Ohio
    Number of Employees
    100 - 249
    Minimal Budget
    $25,000 - $50,000

    Cinnova Technologies LLC Services

    • Web Development
    • Mobile App Development
    • Software Development
    • UI/UX Design
    • Web Design
    • SEO
    • Big Data Analytics
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • University of Cincinnati
    • HP
    • ProCamps Worldwide
    Data sourced from the agency's DesignRush profile

    Cinnova Technologies LLC Reviews & Testimonials

    • Kyle Neely
      Kyle Neely Review from Google
      1.0

      Kyle Neely's Review Sourced from Google

      Sketchy method of cold calling to get leads by claiming they talked to someone else at my org that they did not in fact talk to. Called on my personal cell phone. Would not do business with them if the engage this this type of misleading lead generation.

    • First
      First Review from Google
      1.0

      First's Review Sourced from Google

      Sketchy people would be a polite way to put it. Kept sending advertisements to a general email box, I responded asking to unsubscribe, they started sending those advertisements to the email from which I responded. I wouldn't trust these people to do anything.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Minneapolis Marketing + Technology Firm

    We solve complex problems with marketing + technology to unlock growth...

    Top Services:

    • Design Services
    • SEO
    • PPC
    • Social Media Marketing
    • Content Marketing
    • Show more
    Location
    Minneapolis, Minnesota
    Number of Employees
    Under 49
    Average Hourly Rate
    $195/hr
    Minimal Budget
    $25,000 - $50,000

    Br8kthru Services

    • Design Services
    • SEO
    • PPC
    • Social Media Marketing
    • Content Marketing
    • Email Marketing
    • Web Design
    • Web Development
    • Digital Services
    • Mobile App Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Waytek
    • Cargill
    • L&M Fleet Supply
    • Comport
    • Qorvo
    • Advanced PCB
    • Affinity Plus Credit Union
    • Polywater
    • One Call Concepts
    • Revox
    Data sourced from the agency's DesignRush profile

    Br8kthru Reviews & Testimonials

    • Mike Jones
      Mike Jones Review from Google
      5.0

      Mike Jones's Review Sourced from Google

      I’ve worked with many agencies in my time as an entrepreneur, and started working with Br8kthru a year ago. It’s been the best agency experience I’ve had thus far. We started a business in March 2021 and finished the year with over $5MM in sales, thanks on part to their team taking on all of my digital marketing efforts - pushing me strategically and tactically to steadily build brand and drive acquisition. Thanks Br8kthru team!

    • Bill Svoboda
      Bill Svoboda Review from Google
      5.0

      Bill Svoboda's Review Sourced from Google

      It was a pleasure working with Br8thru on our web project. They helped breathe life into our existing Hubspot website, and take it to the next level. I've worked with a few web companies in the past, but their Project Manager was the best to work with - very prompt email responses and pro-active in how they approached our build... they caught our vision for the project, then went to work since they're the professionals. Signing off on their work was easy at that point. Overall, it was an excellent experience and would highly recommend them.

    • M L
      M L Review from Google
      5.0

      M L's Review Sourced from Google

      I hired Br8kthru to help refine my company's branding. Jon and his team were insightful, creative and well organized, offering thoughtful and comprehensive feedback throughout the process. In addition to their skillfulness, they were a wonderful group of people, making the whole process a joy, start to finish.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews

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