App development & design house

We help companies launch their products. And scale to millions of users.

Make your startup dream a reality

We love to work with startups because they are as passionate as we are about their products. Whether you need a brand new app, a full website redesign or just some sprucing up of current products, we want to help and make your startup dream a reality.

Ruby on Rails Web Development

We build web applications using Ruby on Rails and AngularJS. Our Agile team focuses on quality code so it easily grows with your business needs. Quickly release new features and test them with users thanks to continuous delivery.

Mobile App Development

Our iOS and Android developers can craft any app, including E-commerce, B2B, or social networking platforms. The in-house design team makes sure your mobile app stands out and attracts a global audience.

UI & UX Design

We love beautiful design and will settle for nothing less. Our designers create stunning graphics for responsive websites or mobile apps across all screen sizes. We create a smooth user experience tailored for your audience.

Our Recent Work


An efficient Agile app development process

We will talk to you about your product vision and decide with you if we are a good fit for your project. If we are, we’ll send you a project estimate for your review. Then we’ll pick the right designer or development team and will get started working on your product’s vision right away.

app development process

Our team becomes your team

With over 100 successful project launches, we’ve got the experience to deliver the results you want. Our app development team is passionate about creating quality products that will bring your vision into reality.

Read our startup tips

Keep up with the latest in app development and design. Follow our blog for expert insights from our team, new technologies and the projects we’re working on.

The Pair Programming Experiment – Part III: The Results

This is Part III of a three-part series on our Pair Programming Experiment. For the experiment, we created two teams working on 2 projects for 2 weeks. One team worked in pairs, second as solo developers. After first week teams started a new project and swapped methodologies. Read all about Read more

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New Captain On Board!

Lately lots of things have been happening at EL Passion. Our team has grown a bit and we also get more involved in the community. We did a pair programming experiment and held the first Warsaw Dribbble Meetup. We have also organised an internal Ruby on Rails Boot Camp and Read more

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Is Elixir / Phoenix Mainstream Yet?

We can all agree that Elixir and Phoenix are in stable versions already. But if we want to answer the question from the title, we need to look into it from a wider perspective. When can we say that a framework becomes mainstream? Commercial use The framework has to be used commercially. Read more

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