Privacy Policy

Introduction

Sybrand van Zyl ("I," "me," or "my") operates the Contra Calor mobile application and website (collectively, "the Service"). This Privacy Policy explains what information is collected, how it is used, and your rights with respect to that information.

By using the Service, you agree to the collection and use of information as described in this policy.

Information We Collect

Information You Provide

The App does not require account creation. You are not required to provide your name, email address, or any personally identifying information to use the App.

If you contact us by email for support, we receive your email address and the content of your message. This is used solely to respond to your inquiry.

Location Data

The App does not access your device's GPS or request location permissions. All vineyard coordinates are entered manually by the user, either by typing coordinates directly, using the in-app map picker to drop a pin, or searching for a location by name.

Vineyard Data

Vineyard profiles, saved vintages, GDD calculations, and settings are stored locally on your device. This data does not leave your device and is not backed up to our servers. We do not operate a cloud sync service.

Usage Data

The App does not collect usage analytics, crash reports, or behavioral data. No third-party analytics SDKs are included in the App.

Purchase Data

If you subscribe to Contra Calor Pro, payment is processed through Apple App Store. We use RevenueCat to manage subscription status. RevenueCat may receive a pseudonymous user identifier and subscription status. We do not receive or store your payment card details. Please review Apple's and RevenueCat's privacy policies for information on how they handle payment data.

Weather Data

The App queries the Visual Crossing Weather API using the geographic coordinates you provide. These coordinates are sent to Visual Crossing's servers to retrieve historical temperature data for GDD calculation. Please review Visual Crossing's privacy policy at visualcrossing.com.

Map Data

The App uses Mapbox for map display and location selection. When you use the map feature, your device communicates with Mapbox servers to load map tiles. Please review Mapbox's privacy policy at mapbox.com.

How We Use Information

Any information collected is used solely for the following purposes:

• Providing and improving the Service
• Responding to support inquiries
• Managing subscription status via RevenueCat

Data Storage

Your vineyard profiles, saved vintages, and settings are stored locally on your device. This data does not leave your device unless you explicitly share it. We do not operate a cloud sync service and your data is not backed up to our servers.

Data Sharing

We do not sell, trade, or rent your personal information to third parties. We do not share your data with advertisers. We share data only with the following service providers:

• Visual Crossing — weather data retrieval (geographic coordinates only)
• Mapbox — map tile rendering
• RevenueCat — subscription management (pseudonymous user ID and subscription status)
• Apple App Store — payment processing

Children's Privacy

The Service is not directed to children under 13 years of age. We do not knowingly collect personal information from children under 13.

Your Rights

Because we collect minimal data and store the majority of it locally on your device, most data control rests with you. You can delete your data at any time by uninstalling the App.

If you have submitted a support inquiry and wish to have your email removed from our records, contact us at support@contracalor.com.

Changes to This Policy

We may update this Privacy Policy from time to time. The current version will always be available at contracalor.com/privacy.html. Material changes will be communicated through the App or by posting a notice on our website.