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Privacy Policy

Percentage Calculator

Table of Contents

  1. Overview & Privacy-First Principle
  2. On-Device Mathematical Processing & Local Storage
  3. Third-Party Services & Technical Platform Data
  4. Official Distribution Channel
  5. User Rights & Local Data Management
  6. Data Security
  7. Children’s Privacy
  8. International Privacy Regulations & Scope
  9. Policy Changes & Transfer of Ownership
  10. Contact Information

Last Updated: August 22, 2026

1. Overview & Privacy-First Principle

The "Percentage Calculator" application (the "App") is developed and maintained by avih6 as a free mathematical utility application. This SERVICE is provided at no cost and is intended for use "AS IS".

The App operates on a strict privacy-first approach: it does not require user account registration, does not maintain cloud user databases, and does not collect personally identifiable information (PII) such as personal names, email addresses, phone numbers, or physical locations.

2. On-Device Mathematical Processing & Local Storage

2.1 Local Calculation Processing

All numeric inputs, formulas, percentage changes, discount rates, margin calculations, and tip splits are computed entirely on the local device hardware. No calculation entries, numeric values, or mathematical results are ever transmitted to external servers.

2.2 Calculation History & Preferences

The App includes optional calculation history tracking and user customization options (such as decimal rounding precision, number formatting, and UI theme options). All history entries and preferences are stored strictly in private local storage on the device. Users can clear their calculation history at any time using the in-app clear feature or through Android OS Settings.

3. Third-Party Services & Technical Platform Data

3.1 Google Play Services & Platform Diagnostics

The App is distributed through the Google Play Store and relies on standard Google Play Services for distribution and basic platform diagnostics. Google may process non-identifying technical information (such as Android OS version and device model) to maintain platform compatibility.

3.2 Third-Party Privacy Policy References

For more information on the data processing practices of Google platform services, review the official policy:

4. Official Distribution Channel

The only authorized and official distribution platform for Percentage Calculator is the Google Play Store:

Google Play Store - Percentage Calculator

Any download or distribution through third-party websites, APK mirror portals, or unofficial app stores is unauthorized and unmaintained. avih6 assumes no responsibility for modified, corrupted, or potentially harmful APK files obtained outside the official Google Play Store.

5. User Rights & Local Data Management

Because the App operates without user accounts and stores no data on external servers, data control is managed directly on the local device:

6. Data Security

Security of local data is prioritized through standard Android operating system sandboxing, ensuring that stored calculation history and preferences remain private and isolated within the App's local storage on the physical device.

7. Children’s Privacy

The Service is designed for a general audience. Because the App operates without user accounts, collects no personal information, and maintains no external databases, no personal data is collected or processed from children under the age of 13. For any questions regarding privacy practices, contact av6development@gmail.com.

8. International Privacy Regulations & Scope

9. Policy Changes & Transfer of Ownership

This Privacy Policy may be updated periodically by posting the revised version on this page with an updated "Last Updated" date. In the event of a merger, acquisition, or transfer of the application or its service, stored data will remain subject to the provisions of this Privacy Policy.

10. Contact Information

For any questions, suggestions, or requests regarding this Privacy Policy, please contact: