HK Hong Kong based · Building for a global audience

We craft mobile apps people love to use.

Union Kit is an independent mobile app studio. We design, build and grow iOS and Android apps with a focus on clean experiences, solid performance and respect for user privacy.

Explore our work Get in touch
iOSApp Store apps
AndroidGoogle Play apps
GlobalMulti-language reach
PrivacyFirst by design
About us

A small studio with a big focus on quality

Union Kit Corporation Limited is a company incorporated in Hong Kong, specialising in mobile application development and technology solutions.

Our team builds useful, easy-to-use apps that run fast on every device. We follow platform guidelines from Apple and Google, and international standards for security and data privacy.

User experience comes first in every product decision.

Performance tuned for low-end and high-end devices alike.

Transparent data practices and compliant advertising.

What we do

Services built around mobile

From the first sketch to millions of sessions, we cover the full life of a mobile product.

Mobile App Development

Design and development of iOS and Android applications with modern technology.

  • Native & cross-platform apps
  • UI/UX design and prototyping
  • Store publishing & updates

Technology Solutions

Consulting and implementation of technology solutions tailored to business needs.

  • Backend & cloud services
  • Analytics and data pipelines
  • Technical consulting

Ad Optimization

Integration and optimization of mobile advertising platforms for sustainable growth.

  • AdMob & mediation setup
  • Monetization strategy
  • A/B testing & reporting
How we work

A clear process, from idea to launch

Discover

We study the market, the users and the goals to define what the app must do.

Design

Wireframes and visual design, tested early with real users.

Build

Agile development with frequent builds, code review and QA on real devices.

Launch & grow

Store release, analytics, monetization and ongoing improvements.

Contact

Have a question or a project in mind?

Write to us and our team will get back to you as soon as possible.

Email us
Website union-kit.com
Address

Flat/Room 1405B, 14/F, The Belgian Bank Building, Nos. 721-725 Nathan Road, Mong Kok, Kowloon, Hong Kong

Legal

Privacy Policy

How Union Kit Corporation Limited collects, uses and protects information in our applications.

Last updated: October 2026

01Information We Collect

We may collect the following information when you use our applications:

  • Device information (device type, operating system, app version)
  • App usage data and interactions
  • Advertising information (Ad ID, ad interactions)
  • Analytics and app performance data

02How We Use Information

Information is collected to:

  • Improve app quality and performance
  • Personalize the user experience
  • Display relevant ads and measure advertising effectiveness
  • Analyze user trends and behavior
  • Keep our apps safe and secure

03Advertising

Our applications use Google AdMob and partner advertising platforms to display ads. Advertising partners may use cookies and similar technologies to collect information in order to show relevant ads. You can change ad settings in your device settings.

04Information Sharing

We only share information with:

  • Advertising partners (Google AdMob, etc.)
  • Analytics service providers
  • Third parties when required by law

05Data Security

We apply appropriate technical and organizational measures to protect your personal information from unauthorized access, loss or disclosure.

06Your Rights

You have the right to:

  • Access and request a copy of your personal data
  • Request deletion of your personal data
  • Opt out of personalized advertising
  • Withdraw consent at any time

07Contact

If you have any questions about this privacy policy, please contact us at support@union-kit.com or write to Union Kit Corporation Limited, Flat/Room 1405B, 14/F, The Belgian Bank Building, Nos. 721-725 Nathan Road, Mong Kok, Kowloon, Hong Kong.

08Advertising Transparency

Union Kit complies with the advertising transparency standards of IAB Tech Lab and Google. Our seller information is registered in sellers.json to keep the digital advertising supply chain transparent.

Authorized seller information for our apps is published at union-kit.com/app-ads.txt.