Privacy Policy for Minimal Calc

Last Updated: December 24, 2024

Introduction

Minimal Calc ("we", "our", or "the app") is committed to protecting your privacy. This Privacy Policy explains how Minimal Calc handles your information when you use our calculator application.

Information We Collect

Data Stored Locally on Your Device

Minimal Calc stores the following information locally on your device only:

Calculation History

  • Mathematical expressions you enter
  • Calculation results
  • Timestamps of when calculations were performed
  • This data is stored in a local Room database on your device

User Preferences

  • Theme preference (Light, Dark, or System)
  • This data is stored using Jetpack DataStore on your device

Data We Do NOT Collect

Minimal Calc does NOT collect, transmit, or store:

  • Personal information (name, email, phone number, etc.)
  • Location data
  • Device identifiers
  • Usage analytics
  • Crash reports
  • Any data on external servers

How We Use Your Information

Calculation History

  • Purpose: To provide you with a history of your past calculations for easy reference
  • Storage: Stored locally in a Room database on your device
  • Access: Only you have access to this data through the app's History screen
  • Retention: Data persists until you manually delete it using the "Clear All History" option

Theme Preference

  • Purpose: To remember your preferred theme (Light/Dark/System) across app sessions
  • Storage: Stored locally using Jetpack DataStore on your device
  • Access: Only accessible by the app to apply your theme preference
  • Retention: Data persists until you uninstall the app

Data Security

  • All data is stored locally on your device using Android's secure storage mechanisms
  • No data is transmitted over the internet
  • No external servers or third-party services are used
  • Data is protected by your device's security features (encryption, lock screen, etc.)

Data Sharing

Minimal Calc does NOT share any data with:

  • Third parties
  • Advertisers
  • Analytics services
  • Other apps
  • External servers

Your data never leaves your device.

Your Rights and Controls

You have complete control over your data:

Calculation History

  • View: Access your calculation history through the History screen
  • Delete Individual Items: Currently not supported (all or nothing)
  • Delete All: Use the "Clear All History" button in the History screen
  • Complete Removal: Uninstalling the app will permanently delete all calculation history

Theme Preference

  • Change: Toggle between Light, Dark, and System themes at any time
  • Reset: Uninstalling the app will reset to default settings

Complete Data Removal

To completely remove all data stored by Minimal Calc:

  1. Open your device Settings
  2. Go to Apps → Minimal Calc
  3. Tap "Clear Data" or "Clear Storage"
  4. Or uninstall the app

Children's Privacy

Minimal Calc does not knowingly collect any information from children or any users. The app is designed to be used by anyone, including children, without any data collection concerns.

Third-Party Services

Minimal Calc does NOT use any third-party services, including:

  • Analytics (e.g., Google Analytics, Firebase Analytics)
  • Advertising networks
  • Crash reporting services
  • Cloud storage services
  • Social media integrations

Permissions

Minimal Calc does NOT require any Android permissions. The app operates entirely within its own sandbox with no access to:

  • Internet/Network
  • Location
  • Camera
  • Microphone
  • Contacts
  • Storage (beyond its own app data)
  • Phone state
  • Any other device features

Changes to This Privacy Policy

We may update this Privacy Policy from time to time. Any changes will be reflected by updating the "Last Updated" date at the top of this policy. Continued use of the app after changes constitutes acceptance of the updated policy.

Contact Information

If you have any questions or concerns about this Privacy Policy, please contact:

📋 Summary — In Plain English

  • Minimal Calc stores your calculation history and theme preference only on your device
  • No data is sent to the internet or any external servers
  • No personal information is collected
  • No permissions are required
  • You have complete control over your data and can delete it anytime
  • No third-party services are used
  • No tracking or analytics of any kind

Your privacy is our priority. Minimal Calc is designed to be a simple, offline calculator that respects your privacy completely.