Effective Date: 9/29/25

Overview

Drawer Calculator (we, our, or the app) is committed to protecting your privacy. This Privacy Policy explains how we collect, use, and protect information when you use our iOS application.

Information We Collect

Data We Collect

We collect limited, non-personally identifiable information to improve our app's functionality and user experience:

Usage Analytics:

App usage patterns (launches, calculations performed, features used)

Calculation data (opening widths, material thickness, slide types selected)

Hardware selections (manufacturer, product lines, part numbers)

User interface interactions (screens viewed, filters applied, favorites)

Search queries within the app

Device information (device model, iOS version, app version)

Technical Data:

Anonymous device identifier (generated randomly by the app)

General location data (country/region level based on IP address)

App performance and crash data

Local Storage:

Custom hardware entries you create

App preferences and settings

Calculation history

Favorite hardware selections

Data We Do NOT Collect

We do not collect:

Personal information (name, email, phone number, address)

Data that can identify you personally

Access to your contacts, photos, or other personal data

Precise location data

Information from other apps

How We Use Information

We use the collected data to:

Improve app functionality and user experience

Analyze usage patterns to enhance features

Fix bugs and improve app performance

Understand which hardware manufacturers and types are most popular

Provide relevant app updates and improvements

Data Anonymity

Important: All data we collect is anonymous and cannot be linked to your personal identity. We use randomly generated anonymous identifiers that cannot be traced back to you personally.

Data Storage and Security

Local Storage: Your custom hardware, preferences, and calculation history are stored locally on your device using secure iOS data storage methods

Analytics Data: Anonymous usage data is processed by Mixpanel, a third-party analytics service, in accordance with their privacy policy

No Personal Data: Since we don't collect personal information, there is no personally identifiable data at risk

Third-Party Services

We use Mixpanel for analytics purposes. Mixpanel may collect:

Anonymous usage data

General location information (country/region level)

Device and app information

For more information about Mixpanel's privacy practices, please visit: https://mixpanel.com/legal/privacy-policy/

Your Rights and Choices

Data Control:

All personal app data (custom hardware, settings, favorites) is stored locally on your device

You can delete the app at any time to remove all local data

Anonymous analytics data cannot be deleted as it's not linked to your identity

Opt-Out:

Currently, analytics collection is essential for app improvement and cannot be disabled

You can stop all data collection by deleting the app

Children's Privacy

Our app does not knowingly collect information from children under 13. The app is designed for professional and hobbyist use by adults.

Data Retention

Local Data: Retained on your device until you delete the app or clear the data

Analytics Data: Anonymous usage data is retained by our analytics provider according to their retention policies

Changes to This Privacy Policy

We may update this Privacy Policy from time to time. We will notify users of significant changes through:

App Store update notes

In-app notifications

Geographic Information

We may collect general geographic information (country/region level) based on IP address to understand our user base geographically. This data is aggregated and anonymous.

Contact Information

If you have questions about this Privacy Policy or our privacy practices, please contact us at:

Email: info@drawercalculator.com

App Support: info@drawercalculator.com

Legal Basis for Processing (For EU Users)

Under GDPR, our legal basis for processing data is:

Legitimate Interest: Improving app functionality and user experience

Consent: By using the app, you consent to anonymous data collection as described

Your Rights Under GDPR (EU Users)

Since we only collect anonymous data that cannot be linked to your identity:

Right to Access: Not applicable as data is anonymous

Right to Rectification: Not applicable as data is anonymous

Right to Erasure: You can delete the app to remove all local data

Right to Portability: Not applicable as data is anonymous

Summary: Drawer Calculator collects only anonymous usage data to improve the app experience. No personal information is collected or stored. All calculation data, custom hardware, and preferences are stored securely on your device.