Imagine you are choosing a new vacuum cleaner or portable speaker. What do you choose? You'll probably be interested in what other people have said, what they liked and what they didn't like. And you're not alone. Up to 93% of customers rely on reviews to help them make the right decision before buying.
On Heureka, Europe's largest price comparison site, reviews play a key role. Not only do they help customers find the ideal product, they also give brands greater visibility and sales support. And that's why Brand Testing Club and Heureka have been working together for a long time - connecting brands with real users who test products and share their authentic experiences.
Our work with Heureka has produced unique data that clearly shows the impact that quality reviews can have. In this article, we'll look at the specific results, explain what makes our reviews unique, and show how your products can shine too.
Where do our reviews appear on Heureka?
On Heureka, reviews are displayed in two key places that customers use most in their decision-making process.
The first place is the product homepage, which serves as a quick overview of all important information. Here, customers can find basic information about the product, such as its price, model and a short description. At a glance, they can also see the product's overall score based on reviews and the number of ratings, allowing them to quickly get an overview of the popularity and quality of the product.

The second and more detailed place is the page dedicated to reviews. Here, customers can delve into detailed descriptions from real users who have tried the product. Each review includes both the strengths and weaknesses of the product, helping customers weigh all the pros and cons. In addition to the texts themselves, this page also displays the total number of reviews and the average score, which serves as a reference point when making a choice.

Data that speaks clearly: results from our collaboration
The collaboration between Brand Testing Club and Heureka is yielding results that show the power of quality reviews in influencing customer decisions. Published reviews on Heureka led to an increase in traffic and conversions for the tested products across different categories just one month after publication.
For example, for a stick vacuum cleaner, reviews led to a 156% increase in product page views and an 1144% increase in review page views. Added to this was a near doubling of conversion (+96%), with customers going directly to the e-commerce site to purchase the product.
The portable speaker reviews yielded similar results. Here, product page views increased by 29%, the review page saw a 39% increase in traffic and conversions increased by 65%, confirming that reviews motivate customers to take action even in the consumer electronics segment.
In the nutritional supplements category, Brand Testing Club reviews helped increase traffic to the review page by 28% and, most importantly, achieve a 115% increase in conversions. So it can be seen that in segments where customers are often hesitant, reviews are a crucial factor that increases product credibility.
The reviews for dog food had the biggest impact. The product page saw a 256% increase in views and conversions reached a whopping 147% increase. This example shows how reviews can help products even in competitive categories.
It is obvious that the reviews published on Heureka are getting results. They increase interest in products, boost customer confidence and lead to more sales.
Why are Brand Testing Club reviews so effective?
Reviews can be a common description of a product or, on the contrary, an authentic view of real users that can influence purchasing decisions. At Brand Testing Club, we focus on the latter - we create reviews that truly deliver value to customers and brands.
What sets our review apart?
- Authenticity first: Every product we test passes through the hands of real users. Testers share their own experiences, highlighting not only strengths but also potential weaknesses. It is this balance that builds trust between brand and customer.
- Detailed and enriched content: our reviews are not just brief comments. Each one is at least 250 characters long, often includes real photos or videos of the product, and provides a comprehensive view of its use. This gives customers a true picture of what to expect.
- More than words: In addition to text, our reviews include visual elements such as photos and videos. This visual content adds another level of authenticity that attracts customers and increases their trust.
- Broad focus: We test products across a variety of categories, from electronics to housewares to pet food. This diversity allows us to bring valuable reviews to a wide range of customers.
- SEO benefit: Detailed reviews from Brand Testing Club help not only customers but also search engines. Content-rich reviews improve product visibility, which leads to more organic traffic to the site and a greater chance of conversions.

These features make our reviews an effective tool for driving sales, improving brand reputation and building trust with customers.
How does Brand Testing Club help brands grow through reviews?
At Testuj.to, we believe that quality reviews are the foundation of success in e-commerce. That's why we've created a process that makes it easy for brands to get authentic reviews from real users and use them effectively to drive visibility and sales growth.
Our work starts by connecting products with real users. We carefully select testers who thoroughly test the products and then share their experiences in the form of detailed reviews. We publish these reviews on strategic platforms such as Heureka, where they can have the biggest impact. Of course, we ensure that reviews are regularly updated to keep products up-to-date and trustworthy.
Our reviews are not just texts. They are valuable information that helps brands better understand their customers. With an analytical approach, we share the data we collect, which can be used to optimise marketing strategies, product presentation or even product development.
Whether you sell electronics, housewares or nutritional supplements, our services can help you turn reviews into a powerful tool for success. Want to know how we can help you? Get in touch with us today.



