SKYFLAG Improves Next-Day Retention by 20%How BitWalk Maximized Revenue and UserRetention with SKYFLAG

First, could you tell us about the service where SKYFLAG has been implemented?

Ms.Minami：“BitWalk” is a reward-based app where users can earn Bitcoin Points (BTCp) based on their step count. For every 250 steps walked, users earn a stamp, and these stamps can be exchanged for BTCp. The accumulated BTCp can then be converted into actual Bitcoin (BTC).

As a Growth Hacker, my mission is primarily to improve retention rates and ARPU. I analyze data to refine product features and continuously work on increasing user retention.
Since BitWalk’s revenue model focuses heavily on advertising, we also put significant effort into maximizing the performance of our ad operations. In addition, we aim to maximize ARPU by improving the user flow and features that encourage users to open accounts at cryptocurrency exchanges, which are necessary for converting BTCp into BTC.

Mr. Yuto：As CEO, I am responsible for designing our monetization strategy, managing advertising budgets, formulating user acquisition strategies, promoting new business initiatives, and making overall business decisions.

Could you tell us about BitWalk’s ad monetization strategy and how SKYFLAG came to be introduced?

Mr. Yuto：At BitWalk, we monetize primarily through rewarded video ads and offerwalls.
Our goal was to maximize advertising revenue while allowing our team to concentrate resources on running and improving the core service. Therefore, we considered introducing an offerwall as a way to increase revenue while minimizing operational workload for ad management.

We had already worked with Skyfall on ad operations for another service, and because we trusted the variety of offers available on SKYFLAG and the reliability of its operational support, we decided to implement it in BitWalk as well.
Currently, we use SKYFLAG and several other offerwall formats. By leveraging the strengths of each platform and expanding the lineup of offers, we provide users with more choices and improve overall monetization.

Maximizing Revenue by Visualizing Latent Needs and Expanding Awareness with Recommend Rewards

How have revenue and performance changed since implementing SKYFLAG?

Ms.Minami：In Japan, SKYFLAG currently generates the highest revenue among our partners.
Many other offerwalls focus mainly on gaming offers, but SKYFLAG offers a much wider range of categories, with financial offers performing particularly well. Because financial offers tend to have higher payouts and directly impact revenue, we actively promote them within the app.

Mr.Wataru：Many SKYFLAG offers are of high-value, especially those in the financial sector, which has significantly contributed to revenue growth.

Another characteristic of BitWalk users is the high approval rate for financial offers. The reliability of the user base creates a positive cycle that leads to consistent revenue.

Mr. Yuto：Before introducing SKYFLAG, we were not fully aware of how well our users matched with financial offers.
After launching SKYFLAG, we realized that there were actually many users who were interested in financial services but had never taken concrete action before. By using SKYFLAG, which has strong financial-sector offers, we were able to visualize these latent needs among our users.

Mr.Wataru：We often see cases where analyzing performance data from SKYFLAG helps deepen understanding of users, so we’re very pleased to hear that it led to new insights for your team.

You are also using SKYFLAG’s Recommend Reward feature. How has that been working?

Ms.Minami：To increase traffic to SKYFLAG and improve user awareness, we introduced Recommend Rewards in October 2025.
Currently, about 7% of SKYFLAG’s total revenue comes through Recommend Rewards on average.

Another advantage of SKYFLAG is that it does not require SDK implementation and supports API integration, which allows us to display the offers we want to emphasize in ways that match our app’s UI. This flexibility makes it easy to adjust creative elements to align with our operational strategy.

Mr.Wataru：It’s great to hear that Recommend Rewards are producing steady results.

BitWalk has also been actively running campaigns such as Super Sales, and we’re impressed by how precisely your team manages campaign settings. It’s clear that SKYFLAG is being used very effectively.

SKYFLAG’s Unique Segmented Delivery Drives User Motivation and Achieves Outstanding Retention

How has retention improved, which was one of your key challenges?

Mr. Yuto：Among new users, those who completed offers on SKYFLAG show higher retention, but even users who simply visited SKYFLAG tend to have higher retention rates overall.
Specifically, users who visited SKYFLAG showed over 20% higher next-day retention compared to users who did not visit it.

In addition, SKYFLAG optimizes offer placements based on user segments such as new vs. existing users and light vs. core users, which helps motivate users and encourages continued engagement.

Mr.Wataru：The user-segment optimization feature you mentioned is one of SKYFLAG’s unique strengths, so we’re very pleased that it’s contributing to solving your challenges.

We’ve also noticed that your team makes creative adjustments on your side. Could you tell us more about that?

Mr. Yuto：When promoting offers through banners, we try to ensure that users perceive them not as external ads, but as notifications from BitWalk itself.

For example, we incorporate BitWalk’s characters into the banner design, so the ads feel like a natural part of the service. By reducing discomfort and helping users clearly understand the benefits, we lower psychological barriers, which ultimately contributes to higher retention.

From Japan to the World: BitWalk’s Next Growth Strategy with SKYFLAG

Finally, could you share what you would like to challenge going forward?

Ms.Minami：BitWalk is expanding globally beyond Japan and is currently available in markets such as the United States and Taiwan.We would like to extend the stable advertising model we established in Japan to our overseas markets as well. Since SKYFLAG is also accelerating its global expansion, we have high expectations for its future development.

Mr. Yuto：One of SKYFLAG’s biggest advantages is that it allows us to improve profitability without requiring significant implementation or operational effort. We would especially recommend it to companies operating services where monetization is difficult on their own, or services targeting younger audiences where ARPU tends to be lower.

Thank you very much for sharing your valuable insights.

_{※All affiliations and titles listed in this article are based on information at the time of the interview.}