Math Defender Privacy Policy

2.1. Saved on Your Device

Your saved game, high scores and settings (such as which math operations are turned on) are stored only on your device and are never sent to us.

• If you uninstall the Game, they are deleted.
• If Android backup is turned on, Android may include them in your device's backup to your Google account, under Google's control. We cannot see that backup.

2.2. Advertising

The Android version is free because it shows ads: a small banner at the bottom of the screen, and a full-screen ad when you lose a run. The ads are provided by Google AdMob, a third-party advertising service. We do not receive any personal information through the ads.

To show ads, measure them and prevent fraud, Google AdMob may collect and use information from your device, such as:

• your device's advertising ID;
• your IP address and an approximate location based on it;
• device and app information, such as the device model, operating system, and language;
• how you interact with the ads, such as views and taps.

This information is collected and handled by Google under its own policies: How Google uses information from apps that use its services and the Google Privacy Policy.

Your choices:

• Where the law requires it (for example in the European Economic Area, the United Kingdom and Switzerland), the Game asks for your consent with Google's consent form the first time you open it. You can change your answer at any time with the AD PRIVACY OPTIONS button on the main menu.
• You can reset or delete your advertising ID, or turn off personalized ads, in your device's settings (on most Android devices: Settings → Google → Ads, or Settings → Privacy → Ads). You will still see ads, but they will not be based on your interests.

2.3. Permissions

The Android version asks only for what the ads need:

• Internet and network state: used only to load ads. The Game itself plays fully offline.
• Advertising ID: used by Google AdMob as described in section 2.2.

The Game does not use your microphone, camera, contacts, photos, or location.

3.1. Saved on Your Computer

Your saved game, high scores, settings and free-trial status are stored only on your computer, in the Game's folder (%LOCALAPPDATA%\CarefreeCoding\MathDefender), and are never sent to us. Deleting that folder removes them. The Windows version shows no ads and contains no analytics or tracking.

3.2. Buying the Game

Purchases are made on carefreecoding.ca and paid through Stripe. Stripe sends us your email address, the name you entered at checkout, the product, the amount paid and a payment reference; your card details never reach us. This is covered in detail by the Carefree.Coding Privacy Policy.

3.3. Activation and Updates

The Game is installed and kept up to date by the Math Defender launcher, which connects to carefreecoding.ca:

• Activation: to unlock the full version, the launcher sends only your purchase email, when you activate and again every few months to confirm the purchase is still valid. Nothing about your computer is sent.
• Activation record: each successful activation or re-check is recorded on our server with your purchase email, the product, and the date and time.
• On your computer: your name and email are saved in the Game's folder so it can show who it is registered to.
• Updates: the launcher checks for and downloads new versions. Like any website, our server's logs may record the IP address and request details of these connections for security and troubleshooting.

The Game itself never contacts our server while you play.