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Top Unit Testing Services in Spain

Ratings Updated: April 3, 2026
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1 Leaders 6 Contenders

7 Companies

Country: Spain
Functional Software Testing: Unit Testing

List of the Top Spain Unit Testing Companies

  • TestDevLab Logotype

    4.9 22 reviews
    Premier Verified
    Undisclosed
    $25 - $49 / hr
    250 - 999
    Málaga, Spain

    Services provided

    100% Application Testing

    Focus Areas

    15% Unit Testing
    15% Acceptance Testing
    15% Installation Testing +4
    15% Integration Testing
    15% Regression Testing
    15% Sanity Testing
    10% IoT Testing

    TestDevLab is a distinguished software quality assurance company specializing in app testing, QA testing, and software validation services. They have consistently impressed clients with their expertise in software quality testing, offering tailored solutions that enhance product quality and performance. With over 90% of reviews highlighting their responsiveness and technical proficiency, TestDevLab is lauded for their effective communication and ability to deliver timely, cost-effective solutions.

    See all 22 projects
    13 of 17 Application Testing reviews are 5 stars
    $200,000 – $999,999 avg. project cost

    Application Testing PROJECT HIGHLIGHT

    QA & Testing Support for Digital Health Company

    5.0 — TestDevLab provides QA and application testing services for a digital health company. The team is responsible for executing regression tests and accessibility testing to support the client's QA Read more
    Read 17 Reviews

    Industry Experience

    TestDevLab has garnered positive feedback across various industries, including Information Technology, Telecommunications, Software, Financial Services, Healthcare, and Advertising & Marketing. Clients praise their expertise in quality assurance, particularly in multimedia streaming and automated testing. The overall sentiment is favorable, highlighting strengths in project management, timely delivery, and effective communication. Industries such as Healthcare and Telecommunications value their capability in regression testing and performance benchmarks, making TestDevLab a strong fit for projects requiring rigorous quality assurance.

    Read All Reviews

    Select Industry to see insights

    Healthcare Information technology Telecommunications Software Financial services IT Services Advertising & marketing Manufacturing Consulting Engineering

    View projects from:

    United States (6) Sweden (3) Estonia (2) Latvia (2) Cayman Islands (1) France (1) Italy (1) South Korea (1) Luxembourg (1) Netherlands (1)

    Málaga, Spain

    23 Calle Severo Ochoa
    Málaga, Spain 29590

    6 - 9

    +44 20 30971616

    See All Locations (11)
    View Profile Visit Website
  • Two.Zero Logotype

    4.9 6 reviews
    $1,000+
    $50 - $99 / hr
    10 - 49
    Sant Cugat del Vallès, Spain

    Services provided

    20% Application Testing
    20% Custom Software Development
    20% E-Commerce Development +2
    20% Mobile App Development
    20% Web Development

    Focus Areas

    13% Unit Testing
    13% A/B Testing
    13% Acceptance Testing +5
    13% Installation Testing
    13% Integration Testing
    13% IoT Testing
    12% Regression Testing
    10% Sanity Testing

    Two.Zero is a versatile digital services company providing a wide range of services including web development, app creation, career coaching, and digital marketing. Reviews highlight their professionalism, responsiveness, and ability to deliver complex projects on time, with approximately 75% of feedback being positive. Clients commend their strong project management skills and adaptability, though minor improvements in technical documentation and advisory guidance are suggested.

    See all 6 projects

    Reviews mention Accessible

    The feedback regarding accessibility highlights Two.Zero's commendable approachability and availability, as clients noted their responsiveness during the project. One client specifically mentioned being impressed by the team's readiness to communicate through various channels, including virtual meetings and messaging apps. Overall, the sentiment is positive, with clients appreciating the ease of access to the Two.Zero team, although there is a suggestion for improvement in detail orientation.
    • Web Dev & Design for Financial Services Company
      5.0 Feb 13, 2026

      Two.Zero delivered on time and was always available for us. We communicated via virtual meetings, emails, and messaging apps. We were impressed by how approachable and available the Two.Zero team was.

      Read Full Review
    Read All Reviews
    5 of 6 reviews are 5 stars
    Less than $10,000 avg. project cost

    Reviewed 6 times in the past 6 months

    Over the last six months, client feedback for Two.Zero has been overwhelmingly positive, highlighting their professionalism and adaptability. Clients praised their ability to deliver tailored solutions, such as a functional MVP for Quicine and an engaging marketing campaign for People Solutions Consulting, leading to significant improvements in user engagement and brand visibility. Notably, clients appreciated their timely delivery and effective communication, although some suggested enhancements in technical documentation and detail orientation. Overall, Two.Zero is viewed as a reliable partner for diverse project needs.
    Read 6 Recent Reviews

    Average Project Cost Breakdown

    $10,000 to $49,000 (3) Less than $10,000 (1)

    What Clients Have Said

    Client feedback highlights Two.Zero's strong value for money, with several clients noting that their pricing fits within budget constraints while delivering high-quality results. For instance, one client appreciated the 'good value for cost' when choosing Two.Zero, while another remarked on their impressive flexibility and professionalism. Overall, sentiment is positive, with multiple clients expressing satisfaction with the quality of work relative to the investment made, reinforcing the perception of Two.Zero as a cost-effective partner.
    Read All Reviews

    View projects from:

    Spain (5) United States (1)
    View Profile
  • Rapita Systems, Inc. Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    50 - 249
    Barcelona, Spain

    Services provided

    100% Application Testing

    Focus Areas

    50% Unit Testing
    50% Integration Testing

    Rapita Systems, Inc. Is an Application Testing company founded in 2004. The team focuses on Application Testing.

    Read more

    Barcelona, Spain

    Parc UPC, Edificio K2M c/ Jordi Girona, 1-3, Office 306-307
    Barcelona, Spain 08034

    34 93 351 02 05

    See All Locations (3)
    View Profile

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  • CENTUM Digital Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    50 - 249
    Getafe, Spain

    Services provided

    25% Application Testing
    30% Cybersecurity
    25% Custom Software Development +1
    20% Mobile App Development

    Focus Areas

    30% Unit Testing
    40% Regression Testing
    30% Integration Testing

    CENTUM Digital is a Cybersecurity company. The team offers Cybersecurity and Custom Software Development and is headquartered in Getafe, Spain.

    Read more
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  • Redsauce Engineering Services S.L. Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    Viladecans, Spain

    Services provided

    40% Application Testing
    20% Custom Software Development
    20% Cybersecurity +1
    20% Mobile App Development

    Focus Areas

    20% Unit Testing
    20% Installation Testing
    20% Integration Testing +2
    20% Regression Testing
    20% Sanity Testing

    Redsauce Engineering Services S.L. Is an Application Testing company. The team provides Application Testing and Cybersecurity and is based in Viladecans, Spain.

    Read more
    View Profile
  • Blue Trail Software Logotype

    5.0 2 reviews
    $50,000+
    $50 - $99 / hr
    50 - 249
    València, Spain

    Services provided

    15% Application Testing
    30% Custom Software Development
    15% Building Security Services +5
    10% API Development
    10% Mobile App Development
    10% Web Development
    5% AI Development
    5% UX/UI Design

    Focus Areas

    20% Unit Testing
    20% Integration Testing
    15% Acceptance Testing +5
    15% Regression Testing
    10% Installation Testing
    10% Sanity Testing
    5% A/B Testing
    5% IoT Testing

    Blue Trail Software is a company specializing in Software Testing and Application Quality Assurance services. They receive positive feedback for delivering high-quality work on time and within budget, with 100% of reviewers highlighting their effective communication and proactive approach. Reviewers appreciate the company's ability to handle ambiguity and align with client values.

    See all 2 projects

    Industry Experience

    Blue Trail Software has demonstrated strong expertise in the Software and Consulting industries, consistently receiving positive feedback for on-time and on-budget project delivery. Clients highlight the company's proactive communication, quality of work, and ability to meet specific project goals. Their impact is particularly noted in developing applications for e-commerce solutions and wellness-focused platforms, making them a suitable choice for businesses seeking reliable software development and innovative app solutions.

    Read All Reviews

    Select Industry to see insights

    Consulting

    Average Project Cost Breakdown

    Less than $10,000 (1) $200,000 to $999,999 (1)

    What Clients Have Said

    Clients consistently highlight Blue Trail Software's competitive pricing and excellent value for money. For instance, the CEO of Futurepay Inc. noted that their pricing fit the budget and provided good value for the cost, resulting in on-time and on-budget delivery of high-quality work. Similarly, the CEO of The Quantum Soul praised their affordability and remarked that they delivered a fantastic product, emphasizing the company's ability to meet financial expectations while maintaining quality.
    Read All Reviews

    View projects from:

    Germany (1) United States (1)
    View Profile
  • w3 research Logotype

    Not yet reviewed

    Undisclosed
    Undisclosed
    10 - 49
    Esplugues de Llobregat, Spain

    Services provided

    30% Application Testing
    40% Custom Software Development
    30% Corporate Training & Coaching

    Focus Areas

    30% Unit Testing
    40% Regression Testing
    30% Integration Testing

    W3 research, a small custom software development firm, is in Esplugues de Llobregat, Spain. Their services include Custom Software Development and Application Testing.

    Read more
    View Profile

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1 Two.Zero

List of the Top 1 Spain Unit Testing Companies

  1. Two.Zero Logotype

    Two.Zero

    $1,000+
    $50 - $99 / hr
    10 - 49
    Sant Cugat del Vallès, Spain

    Ability to deliver

    31.7/40.0
    18/20 Reviews
    8.7/10 Clients & Experience
    5/10 Market Presence

    Service focus

    20% Application Testing
    13% Unit Testing
    80% Other
    View Profile Visit Website
  2. Rapita Systems, Inc. Logotype

    Rapita Systems, Inc.

    Undisclosed
    Undisclosed
    50 - 249
    Barcelona, Spain

    Ability to deliver

    0/40.0
    0/20 Reviews
    0/10 Clients & Experience
    0/10 Market Presence

    Service focus

    100% Application Testing
    50% Unit Testing
    View Profile Visit Website
  3. CENTUM Digital Logotype

    CENTUM Digital

    Undisclosed
    Undisclosed
    50 - 249
    Getafe, Spain

    Ability to deliver

    0/40.0
    0/20 Reviews
    0/10 Clients & Experience
    0/10 Market Presence

    Service focus

    25% Application Testing
    30% Unit Testing
    75% Other
    View Profile Visit Website
  4. Redsauce Engineering Services S.L. Logotype

    Redsauce Engineering Services S.L.

    Undisclosed
    Undisclosed
    10 - 49
    Viladecans, Spain

    Ability to deliver

    0/40.0
    0/20 Reviews
    0/10 Clients & Experience
    0/10 Market Presence

    Service focus

    40% Application Testing
    20% Unit Testing
    60% Other
    View Profile Visit Website
  5. Blue Trail Software Logotype

    Blue Trail Software

    $50,000+
    $50 - $99 / hr
    50 - 249
    València, Spain

    Ability to deliver

    21.9/40.0
    17/20 Reviews
    0/10 Clients & Experience
    4.9/10 Market Presence

    Service focus

    15% Application Testing
    20% Unit Testing
    85% Other
    View Profile Visit Website
  6. w3 research Logotype

    w3 research

    Undisclosed
    Undisclosed
    10 - 49
    Esplugues de Llobregat, Spain

    Ability to deliver

    0/40.0
    0/20 Reviews
    0/10 Clients & Experience
    0/10 Market Presence

    Service focus

    30% Application Testing
    30% Unit Testing
    70% Other
    View Profile Visit Website
  7. TestDevLab Logotype

    TestDevLab

    Undisclosed
    $25 - $49 / hr
    250 - 999
    Málaga, Spain

    Ability to deliver

    26.2/40.0
    18.8/20 Reviews
    1.4/10 Clients & Experience
    6/10 Market Presence

    Service focus

    100% Application Testing
    15% Unit Testing
    View Profile Visit Website

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Specialties

IoT Testing Load Testing Stress Testing Reliability Testing Beta Testing Sanity Testing Unit Testing Acceptance Testing Integration Testing

Popular Locations in Spain

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