The Story of e-simmy

Posted on 16. April 2026 by Jan Bunk

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Client Introduction

We recently completed the development of the e-simmy app, a project that involved converting their website into a mobile app. This case study will take you through the process of creating the app, the features we implemented, and the client's feedback.

App Description

e-simmy provides eSIM data plans for international travel across 160+ countries while letting users keep their number.

To get an even better understanding of the app, here's its app store description:

e-simmy is the specialist in eSIM solutions for travelers worldwide. Our goal is to make international connectivity simple, accessible and affordable, so you can stay connected anywhere in the world without the hassle of physical SIM cards. With e-simmy you can quickly and easily purchase and activate an eSIM for more than 160 countries, with no hidden costs or complex contracts. Whether you travel for business, pleasure or a combination of both, we offer flexible data packages tailored to your needs.

Developing the e-simmy App

Our self-serve platform allows customers to create their own app with ease. This approach provides flexibility and control over the app's design and functionality, enabling customers to tailor the app to their specific needs. The e-simmy app was created using this platform, with our support team available to assist customers throughout the process.

As part of the app creation process, we integrate additional features to enhance the app's functionality. These features include push notifications, which enable the e-simmy team to communicate with users effectively and keep them informed about important updates and events. By incorporating these features, we ensure that the app provides a seamless and engaging user experience.

App Launch

During the app publishing process, it's not uncommon to encounter an app rejection from either Google or Apple. Typically these are minor issues, like accidentally providing incorrect links or information in the app store listing. Sometimes there's also a need for small website changes to make sure the content of the app is in compliance with the app store rules.

With our proven track record of successfully publishing apps on the Apple App Store and Google Play Store, we are well-equipped to handle any challenges that may arise during the app review process. Our team is experienced in addressing common issues that can lead to app rejections, and we work closely with our customers to resolve these issues quickly and effectively. This ensures that the app is published without unnecessary delays, allowing users to access the app as soon as possible.

The app has been successfully published on the app stores, making it accessible to users. The e-simmy team is delighted with the app's launch and is eager to see how users engage with the app.

The app has already been downloaded over 200 times and has received an average rating of 0.0 stars based on 0 reviews.

Project Wrap-Up

The completion of the e-simmy app project marks a significant milestone for our team. We are proud to have delivered a high-quality app that enhances e-simmy's online presence and provides users with a convenient way to access their services.

Did we pique your interest? See more example apps here.

Would you like to learn more about our app creation process? Contact us here.

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Author Jan Bunk
Written by
Jan Bunk

With a background in computer science, Jan founded webtoapp.design in 2019 and developed the underlying software to convert websites into apps. With experience and feedback gathered from hundreds of published apps, he strives to write easy to follow guides that help you with everything related to app creation, publishing and maintenance.