X2 Mobile

X2 Mobile was founded in 2013 and is based in Cluj-Napoca, Romania, operating from Széki Palace, a Gothic Revival building on the river. The team includes founders George and Dan (CEO), along with developers, designers, QA engineers, and project managers—roughly 15–20 people visible on the site. They build native iOS and Android apps, web applications, and have shipped products used by more than 2 million active users globally, with particular strength in education and edtech. The company claims 100% app store acceptance since 2007 (though they were founded in 2013), zero security breaches, and an average client partnership length of six years.

Services and capabilities

X2 Mobile offers end-to-end mobile and web development, product prototyping with UI/UX design, manual and automation QA testing, and tech consultancy. They work through a seven-step process: initial engagement and deep dive, contract signing, product prototyping, planning with PMI-certified project managers, implementation and development, release and app store management, and ongoing maintenance. They assemble project-specific teams and use modular development with SOLID design principles and English code comments for maintainability.

On the QA side, they combine automated testing (Appium, Testim, Selenium) with manual testing and regression testing. Code is verified by at least three developers per part. They handle app store submissions and claim a 100% success rate on launches. On the tech stack, they work with Flutter, Kotlin, Swift, Java, JavaScript, TypeScript, Node.js, React, Angular, Firebase, MySQL, Postgres, MongoDB, PHP, Python, Dart, JetPack, Compose, SwiftUI, Objective-C, ARKit, MLKit, Figma, and Unity. Product prototyping is included by default in their end-to-end process, with options to vary depth based on project needs.

They also offer tech and product consultancy, helping clients choose the right technology stack, team structure, and improvements for long-term product success. Partners stay with them for six years on average.

Notable work

Red Sea International Film Festival received a mobile app built in 2 months that hit 10,000 downloads in 10 days. ClassLink Launchpad scaled from zero to 2 million daily users and 8.5 million downloads. The Hymnals app improved its crash rate from 40% to 98% success (crash-free sessions). Verity Student built an educational app for managing academic journeys. KINNECT uses AI to create a private, secure platform for family memories. Ubongo's PlayRoom is an educational app for kids aged 3–14 across Africa. Transport Cluj provides real-time public transport information in Cluj-Napoca. KiteSpot helps water sports enthusiasts find locations for kiteboarding and windsurfing. ClassLink Audit Center streamlines evaluation processes for education leaders. Other projects include Card Deck App for reading instruction, WordWorks for learning word formation, LeARn (augmented reality for school manuals), Book Room (accessible ebook reader), Scripor Alphabet (for the visually impaired), and warehouse logistics tracking for FishisFast.

How they work

Engagements start with a collaboration match and deep dive to understand business goals and user needs. Once signed, X2 assembles a tailored team and begins the prototyping phase (included by default). PMI-certified project managers create a roadmap with clear priorities. Development follows agile principles with transparent communication, QA from the start, and continuous consultancy on emerging technologies. They prioritize features into a user-centric story map and create an estimated task backlog. MVPs can launch in as fast as two months. The average partnership lasts around six years, suggesting longer-term engagements rather than one-off projects.

Team and credentials

X2 Mobile has approximately 15–20 visible team members, including founders George and Dan, and staff across development, design, QA, and project management. They employ PMI-certified project managers and ISTQB-certified QA engineers. The company operates from Széki Palace in Cluj-Napoca. No formal certifications like ISO 27001 or SOC 2 are mentioned in the source material. They report 13 years of development experience with zero security breaches and 100% app store acceptance. Their apps serve more than 2 million users globally, with over 2,300 daily active users in some projects and a track record of 7,000+ code commits per project.