Users search for Google alternative: Xayn reaches 100K downloads

Xayn’s web search ensures a great user-experience with advanced AI for accurate search results without harvesting your data

  • Privacy-protecting search engine Xayn grows to 100,000 downloads and more than 90,000 daily searches in just three months since its launch
  • Xayn combines privacy, convenience, and control over its algorithms
  • The privacy tech app made in Europe is available for free on iOS/Android  

BERLIN, 24 March 2021Xayn, the privacy-protecting search app that utilizes AI to deliver personalized and relevant results, has been downloaded more than 100,000 times  since its launch in December. In a time of increased online activity and with debates about online privacy heating up, Xayn has found a winning formula for web search: its sleek interface and user-trained AI delivers accurate results, while always protecting personal data. Since its launch three months ago, Xayn’s daily search numbers have risen to more than 90,000 – a number that took DuckDuckGo three years to achieve. The success of this academically grounded startup ushers in a new generation in privacy tech.  

The European tech company combines privacy and a convenient search with control over the search algorithms, empowering users to take back control of their data. For the first time, you can influence what is shown to you by swiping left or right on the results. This way, you can teach the algorithms which results you want to see more of in the future.

Growing pressure from consumers for more privacy-protection  
The growth of Xayn comes at a time when internet users are becoming increasingly aware of the intrusive and exploitative nature of Big Tech. These companies have in turn responded with heartfelt statements and pledges that sound nice but don’t always lead to action. There appears to be a growing consensus that personal data should be controlled by the person generating it. A new model is emerging where online access does not entail surrender of digital privacy.  

Current data such as the Cyber Security Insights Report demonstrates this trend towards more privacy: 92% of globally surveyed online users stated that they have at least one significant concern about their data privacy. More than two-thirds of those surveyed (67%) are more alarmed than ever about threats to their privacy but 64% still accept certain risks to their online privacy to make their life more convenient. Other numbers indicate the relevance of search for how people use the internet: Search queries make up around 30% of all global website traffic.

From research to search
"The first search engines were developed by scientists in order to make online information available to everyone," highlights Leif-Nissen Lundbæk, co-founder and CEO. "Over the last 30 years this system has unfortunately been perverted, forcing users to become losers – you either lose your online data or your precious time when you don’t find what you’re looking for. I was fed up with always having to choose between privacy and convenience when searching online. To end this trade-off, we built a search alternative with no compromises. With Xayn, you’ll find the information you’re looking for in an easy way while always keeping your privacy and deciding yourself – that’s web search as it should be.”    

Born in academia, the company behind the new search engine was founded to move an entire industry forward. To this day, that academic vision remains. Xayn currently plays host to a workforce of 30% PhDs who are committed to privacy as a basic human right, as stated by the United Nations in their Universal Declaration of Human Rights.

"Following in the footsteps of the scientific web pioneers, we not only wanted to make information easily accessible but also privacy available to everyone. That’s why we pioneer a new generation of user-friendly privacy tech made in Europe,” explains Michael Huth, Professor at Imperial College London and co-founder and Chief Research Officer. “We have a strong focus on design because we want to offer users the best experience possible. We are convinced that privacy tech can only go mainstream if users are given alternatives that can compete with the incumbents on design and user experience.”

Four AI models working on your device to find the best results
Unlike its competitors, Xayn’s web search uses a decentralized approach and trains its artificial intelligence directly on your devices. Instead of bringing the data to the algorithm, it brings the algorithms the devices. All personal data stays where it belongs – with you. Only the AI models are shared after they’ve been encrypted to enable collective learning. This decentralized approach is called masked federated learning. It is made possible by the company’s platform XayNet which started as a research project four years ago and which has been open-sourced since then.  

Every time you search online with Xayn, four different AI models work on device level together to personalize your search results. The first model processes natural language to understand each search’s context. The second model creates dynamic clusters of interests based on your input. The third model then analyses the domains you like or don’t like. The fourth model mixes all this together and adds more contexts like the time, weather, location, and other variables to find the best matching search results. This last model also acts as a protection against filter bubbles because it will explore new content outside of your past preferences and show it to you.

By swiping left or right you can give the AI direct feedback and train it to give you even better matching results in the future. The more you use Xayn, the more accurate and personalized the results become. All of this is done, again, without collecting any of your data.  

Feature Highlights
With Xayn being all about privacy and innovation through technological achievement, the company is continuously looking for ways to ensure the best user-experience in web search. Therefore, Xayn offers you features such as:    

  • Your AI: Turn your AI on for unique search results – as unique as you. Turn your AI off if you don’t want to experience personalized search results.  
  • AI Swiping: Puts you in control with handy right or left swipe actions to approve or dislike specific search results. That way, you quickly find what you’re really looking for.
  • Intuitive Interface: Xayn’s interface is designed to make your life easier, including details such as a one-hand control and zero-click search for effortless interaction with the app.  
  • Your Collections: You can collect, store, and sort through your favorite web content so that you won’t lose any information.
  • Your Home Screen: Your home screen is your own personal feed of the entire web, determined by you, and curated for you exclusively by Xayn. You stay in full control and get continuously inspired by the variety of the web.

Xayn search app is available on all smartphones (iOS, Android) and will also be available in a web version at a later stage. Users can download Xayn free of charge from Apple’s App Store and the Google Play Store.


About Xayn

Xayn is a privacy-protecting search engine that enables users to gain back control over the algorithms and provides them with a smooth user-experience. Using the latest AI technology made in Europe, the company ushers in a new generation of user-friendly privacy tech – making privacy available for everyone.

The AI company started as a research project at The University of Oxford and Imperial College London by Leif-Nissen Lundbæk (Ph.D.) and Professor Michael Huth. Together with Felix Hahmann, they founded the tech company in 2017. To this day, that academic vision remains with a workforce comprised of 30% Ph.D.s. The company’s open-source framework for federated analytics and learning, XayNet, is the basis of the privacy-protecting personalised search alternative Xayn. The Berlin-based company has received investment funding of 9.5 million EURO by Earlybird VC as well as Dominik Schiener. Xayn has worked with corporations such as Porsche, Daimler, Deutsche Bahn, and Siemens.



How does Xayn work?

Xayn uses a decentralized approach with so-called computing on the edge. The app is based on XayNet, a specially developed framework for masked federated machine learning. The app doesn’t collect any user data but combines the encrypted AI models of the respective devices asynchronously with homomorphic encryption to a collective model. In a second step, this collective model is then fed back to the individual devices. Thus, the respective models learn from each other while your privacy is always protected.  

On each device, four AI models work together in the app to present you the most relevant search results.

  • AI 1 for processing natural language (quantized tiny multilingual Sentence-BERT):
    Xayn’s first AI model is a quantized tiny multilingual Sentence-BERT optimized for mobile to understand the natural language of queries of the words you used in your query as well as in the results. Therefore, Xayn uses word embeddings that map words or phrases from the vocabulary to vectors of numbers, since the AI needs to process numbers.
  • AI 2 for grouping interests (unsupervised clustering model called Col):
    In the second step, Xayn uses an unsupervised clustering model named Col to group these points in the embedded space into different clusters of interest – for example, Sports, Arts, and so forth. Afterwards, it calculates the distance to the so-called cluster centroids to reduce the computational cost in the re-ranking model later. These clusters of interest are very dynamic and can change over time because your interests might shift. In addition, the clusters can also be very fine-grained. This means, they don’t necessarily represent only over-arching categories like Sports or Arts but could represent also detailed clusters like “Scottish Hurling” or “Canoeing in the German Spreewald”.
  • AI 3 for analysing domain preferences (ListNet):
    A third model called ListNet analyses the history of search interactions to understand which types of domain you like – for example Wikipedia rather than Instagram.
  • AI 4 for computing context (dynamic contextual multi-armed bandit):
    The fourth AI model finally merges the outputs of Col (AI 2) and Col (AI 3). This so-called dynamic contextual multi-armed bandit is a type of reinforcement learning algorithm. In this stage, Xayn learns what is more important for you based on certain contexts such as time and location. The app learns whether you prefer a certain interest over others – e.g., whether you prefer sightseeing over restaurants when searching for “Barcelona”.

    Furthermore, it constantly explores new behaviors and tries out new things to stay topical, since your interests might change over time. This AI model also enables Xayn to understand much better what type of content (news, videos, images...) you prefer.

In the beginning, Xayn delivers general search results but refines them every time you interact with it. This way, you can watch the AI learning and get relevant search results, while your privacy is always protected.

Why should you interact with the Xayn app by swiping?
With each search, you can give Xayn direct feedback so that the app refines future search results. If you swipe to the left, you’re telling Xayn you don’t want to see the result. With a quick swipe to the right, you tell Xayn that you're interested in the result. Swiping slowly to the right indicates to Xayn that you want to save the result in your collections.

What are the Collections?
When searching the web with Xayn you can create flexible content collections where you can save webpages, news, images, videos etc. These personal content collections provide you with all their researched information at one glance, in an interface that provides a clear overview.

How does the personalized home screen work?  
Like a social media newsfeed, your personalized home screen offers you a feed of curated content that matches your interests – be it general web content, videos, images, or news articles. However, unlike conventional new feeds, Xayn doesn't rely on a closed platform but rather collects content suggestions uniquely for you from the variety of the entire web. With every app interaction you make, Xayn understands better what content is relevant for you.

What are the requirements for the Xayn app on a smartphone?
We recommend you use the Xayn app with a smartphone that is as up to date as possible - for Apple starting from the iPhone 8 and for Android operating systems from version 9.

Is Xayn also available as desktop version?
A desktop version of Xayn as well as other features are already in preparation and will follow in the future.

Contact information

Dr. Clara Herdeanu
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