Marcus Spitzmiller

OneCal Privacy Policy

Last updated: October 2025

OneCal is committed to protecting your privacy. This policy explains what information our app collects, how it’s used, and your choices.

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  1. Information We Collect

OneCal is designed to be simple and private. • Personal data you provide: height, weight, birthday, and gender are stored only on your device. They are used solely to calculate calorie targets. • Health data (optional): if you enable Apple Health, OneCal reads your body weight to keep your profile up to date. This data never leaves your device and is not shared. • App usage data: we use Google AdMob to display ads. AdMob may collect: • Device identifiers (such as Advertising ID) • Approximate location (inferred from IP address) • Interaction data (e.g., ad views and clicks) This data is used by Google to deliver and measure ads.

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  1. How We Use Data • To calculate and display calorie targets within the app. • To display third-party ads via Google AdMob. • To maintain app functionality and performance (through aggregated analytics provided by AdMob).

We do not: • Create user accounts or store data on our servers. • Sell, rent, or share your personal information. • Send marketing messages or personalized recommendations.

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  1. Data Storage

All user profile and Health data remain local to your device. AdMob and Apple handle their data independently under their respective privacy policies.

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  1. Third-Party Services • Google AdMob (advertising): Google Privacy Policy • Apple HealthKit (optional): Apple Privacy Policy

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  1. Your Choices • You can disable Ad personalization in your device’s Settings › Privacy & Security › Tracking. • You can disable Health access anytime in Apple Health › Apps › OneCal. • You can delete the app to remove all locally stored data.

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  1. Updates

We may update this policy from time to time. The latest version will always be available at the URL provided on the App Store listing.