Our development of the eSIMzero app revolutionised global travel connectivity in Mongolia
The eSIMzero App seamlessly integrates with Shopify and introduces eSIM sharing, enhancing every traveller's mobile experience.Technologies
Figma
Firebase
TypeScript
FlutterServices Used
Industry
Challenge
The aim of creating the eSIMzero app was to transform connectivity across the globe, benefiting not only individual travellers, but also businesses and corporate events alike. The existing solutions failed to offer seamless Shopify integration, lacked features for comprehensive eSIM management, and did not support the innovative concept of eSIM sharing.
The app needed to be versatile enough to cater to the dynamic needs of businesses,facilitating global connectivity, alongside offering an intuitive experience for purchasing, managing, and sharing eSIMs globally

Koroutine has brought eSIMZero to life. They've been able to understand the vision of eSIMzero and deliver a high-quality app and online shopping experience.


Solution
To address the connectivity needs of both individual travellers and businesses, we designed and developed a comprehensive mobile application using Flutter for cross-platform compatibility, and Firebase for backend support. This strategic combination ensures a consistent user experience across iOS and Android, whilst Firebase provides the scalability needed for managing eSIMs and user data securely. The app facilitates eSIM purchases, management and sharing, alongside specialised features for businesses. making global connectivity effortless and efficient for all users.
The app facilitates eSIM purchases, management and sharing, alongside specialised features for businesses. making global connectivity effortless and efficient for all users.
Outcome
The launch of the eSIMzero app by Across The World Mongolia has significantly enhanced global connectivity for travellers and businesses. With its user-friendly design and advanced features, such as eSIM sharing, the app has streamlined the management of international mobile services. Its success is marked by increased user satisfaction, positioning Across The World Mongolia as a leader in innovative travel solutions in Mongolia.
Let's build the future of connectivity together.
From eSIM platforms and carrier integrations to customer apps and digital telecom experiences, we help connectivity brands launch, scale and innovate faster.
Systems built for telecoms
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eSIM Expertise
We've designed, built and integrated eSIM solutions across multiple markets and use cases.
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Carrier Integrations
Deep experience with SM-DP+, billing, CRM, entitlements, policy, and telecom APIs.
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Rapid Delivery
Move from concept to launch faster with an agile, senior team without the overhead.
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Global Connectivity
Proudly supporting operators, MVNOs and connectivity brands worldwide.
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