Privacy Policy
1. Introduction
NullPo Works ("we") establishes this Privacy Policy regarding the handling of users' personal information in the mobile and web applications ("Apps") we provide.
This policy applies to all apps provided by us, including "Tamashii no Kyoumei ~Believe in Me~," "Piyo's Adventure," "14-banchi," and others.
2. Data We Collect
Our apps may collect the following data:
2.1 Firebase Analytics (Google Analytics for Firebase)
- Anonymous usage statistics (app launch count, screen transitions, usage time, etc.)
- Device information (OS, device model, screen size, etc.)
2.2 Google AdMob
- Device identifiers for ad delivery
- Information related to ad display and clicks
2.3 Firebase Realtime Database (Ranking Feature)
- Nicknames voluntarily entered by users
- Game scores
* We do not collect any personally identifiable information (such as names or email addresses) through these services.
3. Purpose of Data Use
The collected data is used for the following purposes:
- Improving app quality and fixing bugs
- Analyzing and compiling usage statistics
- Delivering and optimizing advertisements
- Providing ranking features
4. Third-Party Services
Our apps use the following third-party services. Please refer to their respective privacy policies for details on how they handle data.
- Google AdMob - Google Privacy Policy
- Firebase (Google LLC) - Firebase Privacy Policy
5. Data Retention and Deletion
Ranking data (nicknames and scores) is retained for as long as necessary for service operation. If you wish to have your data deleted, please contact us using the information below. We will delete it promptly to the extent possible.
Anonymous data from Firebase Analytics is subject to Google's data retention policy.
6. Children's Privacy
We do not intentionally collect personal information from children under the age of 13. If we become aware that a child under 13 has provided data, we will promptly delete it.
7. Changes to This Policy
This Privacy Policy may be updated as needed. Any changes will be posted on this page. In the case of significant changes, we may also notify users within the app.
8. Contact Us
For inquiries regarding this policy, please reach out via our Contact Form or X (Twitter) @nullpo_works DM.
Effective date: February 16, 2026
Last updated: February 16, 2026