Best App Developers for Startups

5 Companies - Rankings updated: June 29, 2026

Each agency undergoes DesignRush evaluation for professional expertise and genuine client satisfaction to assist your search. Some featured placements are paid.

Sponsored
United States × California × Sunnyvale ×

  • Innofied Solution

    Guaranteeing a 5 star experience!

    Guaranteeing a 5 star experience!

    Innofied is an award-winning B2B AI software development company with 600+ successful projects since 2012, helping businessesincluding Fortune 500 companieswith modern AI and SaaS solutions. With a global presence, our game-changing automated solutions continue to drive success across industries.  [... see all Innofied Solution reviews ]
    Location
    Sunnyvale, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    20 Projects Listed
    View Profile
    4.3 4.3 (1)
    4.2 4.2 (78)

  • yuj - UX Design Company

    Enterprise UX Design | 3,000+ Projects for Fortune 100/500 Clients

    Enterprise UX Design | 3,000+ Projects for Fortune 100/500 Clients

    yuj is a global UX design company with 16+ years of experience and 3,000+ projects delivered for Fortune 100 and Fortune 500 clients across automotive, fintech, healthcare, and hi-tech industries.  [... view Yuj - UX Design Company profile ]
    Location
    Sunnyvale, California
    Number of Employees
    100 - 249
    Portfolios Count
    8 Projects Listed
    View Profile
    4.3 4.3 (92)

  • ThinkSys

    Deploy Dream Applications From Scratch

    Deploy Dream Applications From Scratch

    Our team of over 200 IT experts and engineers harness the power of contemporary technologies, advanced frameworks, and innovative methodologies to deliver unmatched and top-notch outsourced services from India.  [... view ThinkSys profile ]
    Location
    Sunnyvale, California
    Number of Employees
    100 - 249
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    4 Projects Listed
    View Profile
    1.0 1.0 (1)

  • Fortunesoft IT Innovations

    Industry-Specific, Ready To Deploy Solutions That Drive Results

    Industry-Specific, Ready To Deploy Solutions That Drive Results

    Fortunesoft is an AI-driven digital engineering and solutions company specializing in Healthcare, Life Sciences, and Fintech.  [... view Fortunesoft IT Innovations profile ]
    Location
    Sunnyvale, California
    Number of Employees
    50 - 99
    Minimal Budget
    $10,000 - $25,000
    View Profile

  • MobMaxime

    Top Mobile App and Web Development Company in Canada, USA and UK

    Top Mobile App and Web Development Company in Canada, USA and UK

    We design highly polished iPhone, Android and Web Apps for startups and Enterprise clients.  [... view MobMaxime profile ]
    Location
    Sunnyvale, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $15/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    3 Projects Listed
    View Profile

About The Author and Expert Reviewer

Content Specialist

selina@designrush.com

Selina Garcia has authored 500+ articles and edited 50+ published books in economics, law, and history. Her unique blend of experiences allows her to approach content creation from a well-rounded perspective. Currently, Selina applies her expertise to producing insightful articles on IT, software, and applications for DesignRush.

Former Development Director

spotlight@designrush.com

Sergio is a technology leader with over six years of experience managing global teams and delivering projects across fintech, sportstech, and B2B platforms. At DesignRush, he drove product growth and development execution, building tools that speed up processes by 95% and cut costs by 35% while maintaining full uptime.

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