# Opportunity Cost

> See every price in satoshis. Understand the Bitcoin opportunity cost of your purchases.

Canonical page: [https://chrome-stats.com/d/opportunity-cost](https://chrome-stats.com/d/opportunity-cost)

## Overview

- **ID:** `opportunity-cost`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** TFTC
- **Category:** shopping
- **Daily users:** 64
- **Rating:** 5.00 / 5 (2 ratings)
- **Version:** 0.0.9
- **Last updated:** 2026-08-12
- **First published:** 2025-06-09
- **Size:** 4.44 MB
- **Data as of:** 2026-09-09
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/opportunity-cost/)
- **Website:** [https://opportunitycost.app](https://opportunitycost.app/)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/opportunity-cost/privacy/](https://addons.mozilla.org/firefox/addon/opportunity-cost/privacy/)

## Description

Opportunity Cost is a Chrome extension that helps you think in sound money wherever you shop online. It automatically detects prices in over 10 local currencies and displays their equivalent value in Bitcoin (₿/sats) right next to the original price. No more switching tabs or calculators—just an instant reminder of the true Bitcoin opportunity cost of your purchases.

Key features include real-time price updates every 30 seconds from reliable Bitcoin exchanges, inline or tooltip display options, seamless dark mode support, and a quick toggle for enabling or pausing the extension on any site. It's fully customizable and privacy-conscious, requiring zero sign-ups and storing all data locally. As an open-source tool, anyone can review or contribute on GitHub. This extension empowers Bitcoin enthusiasts to make informed spending decisions effortlessly.

## Rankings

- #14,304 — Overall
- #1 — opportunity
- #2 — cost
- #34 — support
- #48 — purchase
- #55 — bitcoin

## Permissions and access

### Permissions

- `<all_urls>`

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension was recently updated in the past month. New updates may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/opportunity-cost)