Compare Holdapp vs Concept21

Side-by-side comparison of features, pricing, services, ratings and more.

Holdapp

Branding & Design Website

Holdapp is a mobile app development agency founded in 2012. The company offers iOS and Android native app development, Flutter development, web app development, UX/UI design, and product discovery workshops. Clients include industry leaders in fashion eCommerce, sports betting, and home decor.

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Winner

Concept21

Branding & Design Website

Concept21 is a full-spectrum digital agency based in Wroclaw, Poland, founded in 2015. The team of 50-99 employees has completed over 1,500 projects across web design, development, eCommerce, SEO, branding, and digital strategy.

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Feature Comparison

Attribute	Holdapp	Concept21
Category	Branding & Design	Branding & Design
Rating		Winner +0.1 higher
Location	Wroclaw, Poland	Wroclaw, Poland
Services	iOS & Android native app development Flutter app development Web app development UX & UI design Product Discovery workshop UX and code audits Team augmentation Web Development Mobile App Development Product Design UI/UX Design Software Testing Software Development Web Design SEO eCommerce Development CRO Design Services Digital Strategy Branding	iOS & Android native app development Flutter app development Web app development UX & UI design Product Discovery workshop UX and code audits Team augmentation Web Development Mobile App Development Product Design UI/UX Design Software Testing Software Development Web Design SEO eCommerce Development CRO Design Services Digital Strategy Branding
Industries	eCommerce Fashion Gambling Education Travel Nonprofit Design Crypto Fintech Luxury	Construction Consumer Goods Corporate Services Fintech Food and Beverage Hospitality Insurance Design Fashion eCommerce
Pros	Relaxed, hard-working team that delivers Reliable company Award-winning work (Legal Bookmakers Award, Mobile Trends Award)	Google reviewers praise clear communication, responsiveness, and reliability. Co-founders bring 15+ and 14+ years of experience in eCommerce, marketplace technology, Java, and financial systems. Client list includes Allianz, Walmart, IKEA, Visa, Hilton, and Accor.
Website	Visit Site	Visit Site

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