Spejl Blank

On a mission to disrupt the window cleaning industry

My role

In collaboration with WeCode, I have been leading the design process of the launch of Spejl Blank’s new subscription product, all the way from the sketching and prototyping phase to designing the interface pixel by pixel.

The client

Spejl Blank has a vision to make window cleaning easy and on-demand. Simply put; “Customers should be happy, we should be happy and nobody has time to wait”.

Their goal is also simple: Being your local window cleaner. The company was founded in 2012 by a group of young entrepreneurs who had a dream of modernizing the window cleaning profession and is now one of Denmark’s strong competitors in the market of window cleaning.

The challenge

Spejl Blank reached out, as they were about to launch their new subscription model, where customers can create a subscription to get their windows cleaned. And to succeed at this, they needed to implement the new product into their current flow, while maintaining their simple booking experience, as they are known for.

Furthermore, they wanted to optimize the landing page to reflect this newly added product. In the process, we also worked on optimizing the actual flow of the booking process by, among other things, moving the first step of the booking process – enter your address – to the frontpage, above the fold.

The solution

Together with Spejl Blank we designed a user flow where users can click through a series of steps to get their unique price for cleaning their windows. In the flow, the user can easily indicate the type of windows they need to get cleaned and how many, and eventually, the user can see their unique price and make the order online.

In the flow, users can choose between a subscription plan or single orders. For subscriptions, users can customize whether they would like to have their windows cleaned indoor, outdoor or both, as well as how often.

Automated transfer of orders to employees

As the new subscription product was implemented, I made sure Spejl Blank’s custom backend system matched. So another big part of this project was to design an effective, easy-to-use backend system for Spejl Blank to manage subscription customers and routes.

The technical solution is designed so Spejl Blank’s calendar is integrated with the website via the backend, so orders made by customers are automatically transferred to the employee's calendars.

Based on the employees’ home address, the Google Maps integration calculates which window cleaner is closest to the customer address, as well as the driving time between each addresses, planning the optimal route for each employee. With these features, Spejl Blank’s team can spend their energy on making customers happy, rather than organizing their orders.


After the implementation of the updated landing page as well as the launch of the new subscription product, Spejl Blank’s conversion rate increased from 10% to 18% with online booking accounting for over 70% of their total revenue.


UX/UI Design


User research


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