Privacy Policy

One Spark: Chain Reaction · Last updated: 9 November 2026

This Privacy Policy explains how Kale App (“we”, “us” or “our”) handles information when you play the mobile game One Spark: Chain Reaction (the “App”) on Android and iOS. By using the App you agree to the practices described here. If you do not agree, please do not use the App.

1. Information we collect

1.1 Information you give us

The App has no registration and no forms for personal information. If you e-mail us, we receive your e-mail address and the content of your message, and we use them only to answer you.

1.2 Information collected automatically by third-party SDKs

When you use the App, the software development kits (SDKs) listed in Section 4 may automatically collect:

• Device and app data: device model, operating system and version, language, time zone, screen size, App version, and diagnostic and performance data;
• Identifiers: the mobile advertising identifier (Google Advertising ID on Android; IDFA on iOS only if you allow tracking, otherwise the vendor identifier IDFV), and installation identifiers created by Firebase;
• Network data: IP address, which may be used to derive an approximate location such as country or city;
• Usage data: game events such as starting, completing or failing a level, stars earned, hints used, settings changed, and whether an ad was shown, watched or clicked;
• Crash reports: technical details about errors and crashes, such as stack traces and the screen or level that was open;
• Purchase events: whether the “Remove ads” purchase was started, completed, restored or refunded. Payment details are never shared with us.

1.3 Game data

• Progress and settings: the levels you completed, the stars you earned, and your language, sound and vibration settings are stored locally on your device.
• Cloud save: if you are signed in to Google Play Games (Android) or Game Center with iCloud (iOS), your progress is also stored in your own saved games so it can be restored on another device. This data is tied to your Google or Apple account, not to an account held by us.
• Leaderboard: if you are signed in, your total number of stars is posted to the public leaderboard together with your gaming profile (name and avatar as set in Google Play Games or Game Center).
• Reminders: if you allow notifications, the App schedules a few reminder notifications on your device for days you have not played. They are created locally on your device; no notification server is involved.
• Internet check: the App requires an internet connection. To check it, the App sends a simple request to Google’s or Apple’s public connectivity-check address; no personal data is included.

2. How we use information

• to run the game, save your progress and restore your purchase;
• to show ads, including rewarded ads that unlock hints, and to measure their performance;
• to understand how players use the game and which levels are too easy or too hard, so we can improve it;
• to find and fix crashes and errors;
• to check that the App is a genuine, unmodified copy (Firebase App Check) and to prevent fraud;
• to tell players of an outdated version that an update is required (Firebase Remote Config);
• to comply with legal obligations.

Where the GDPR or similar laws apply, we rely on your consent for personalised advertising and on our legitimate interests in operating, securing and improving the App for the other purposes.

3. Advertising and your choices

• Consent: in the European Economic Area, the United Kingdom, Switzerland and other regions where it is required, the App shows Google’s consent form before ads are personalised. You can change your choice at any time with “Privacy options” in the Settings menu.
• iOS tracking: on iOS the App asks for permission under App Tracking Transparency. If you decline, the IDFA is not accessed and ads are not personalised with it.
• Advertising ID: you can reset or delete your advertising ID, or opt out of personalised ads, in your device settings (Android: Settings › Privacy › Ads; iOS: Settings › Privacy & Security › Tracking and Apple Advertising).
• Remove ads: a single in-app purchase turns off banner and interstitial ads. Rewarded ads, which you choose to watch to unlock a hint, remain available.

4. Third-party services

The following third parties receive information through the App. Each processes data under its own privacy policy.

5. How information is shared

We do not sell your personal information. Information is shared only with the service providers above, which process it to provide their services to us, and with advertising partners through Google AdMob as described in Section 3. We may also disclose information if required by law or to protect the rights and safety of our users or ourselves.

6. Data retention

Game data on your device stays there until you reset your progress in Settings or uninstall the App. Cloud saves stay in your Google or Apple account until you delete them there. Analytics data is kept for up to 14 months and crash reports for up to 90 days. Data held by advertising partners is retained according to their own policies.

7. Your rights and choices

Depending on where you live, you may have the right to access, correct, delete or restrict the processing of your personal data, to object to processing, and to withdraw consent. Because we do not hold an account for you, most data is linked only to random device identifiers. To make a request, e-mail contact@kaleapp.net. Because the data is linked only to device identifiers, we may ask you for details that help us identify your device’s data. You may also lodge a complaint with your local data protection authority.

8. Children’s privacy

The App is not directed to children under 13 and we do not knowingly collect personal information from them. If you believe a child has provided us information, contact us and we will delete it.

9. Security

All data sent by the App and its SDKs is encrypted in transit using HTTPS. No method of transmission or storage is completely secure, but we take reasonable measures to protect information.

10. International transfers

Our service providers may process information in countries other than yours, including the United States. Where required, these transfers are protected by appropriate safeguards such as the European Commission’s Standard Contractual Clauses.

11. Changes to this policy

We may update this policy from time to time. The new version will be posted on this page with a new “Last updated” date.

12. Contact us

Kale App · contact@kaleapp.net · kaleapp.net