Extension Policy

Simple Calculator Privacy

A practical privacy policy for our Chrome extension, written to match how the product actually works: offline-first, local-only, and no tracking.

Effective date: June 18, 2026

Overview

Simple Calculator is a Chrome extension that provides both basic and scientific calculator modes. This page explains what data the extension handles. In short: Simple Calculator does not collect, transmit, sell, or share personal data. Any saved information stays on your own device.

What the Extension Stores

The extension uses Chrome's built-in chrome.storage.local API to save a small set of convenience data directly on your device:

  • check_circleYour calculation history, so recent work is available when you open the popup again.
  • check_circleText in the optional sticky note panel.
  • check_circleYour preferences, including theme selection and whether scientific mode is enabled.

This information is never sent to NHR Soft, to an analytics service, or to third parties. Uninstalling the extension or clearing its local storage removes it.

Permissions Requested

Simple Calculator requests a single Chrome permission:

Required

`storage`

Used only to save calculation history, sticky notes, and interface preferences on your own device.

The extension does not request access to your browsing history, tabs, web page contents, location, contacts, or any sensitive browser data.

No Tracking or Network Requests

  • wifi_offSimple Calculator works fully offline.
  • shield_lockIt does not use analytics SDKs, advertising tools, cookies, or crash reporting services.
  • code_offIt does not download or execute remote code. All code is bundled inside the extension package.

Children's Privacy

Simple Calculator is a general-purpose utility and is not directed at children. Because it does not collect personal information at all, it does not knowingly collect data from children or adults.

Changes to This Policy

If a future version of the extension changes how data is handled, we will update this page and revise the effective date shown above.