Opportunity Cost

Name: Opportunity Cost
Rating: 5 (2 reviews)
Author: TFTC

By: TFTC

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

Download

Install

Features & Capabilities

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.

User Growth & Download Statistics

Add-on Cryptocurrency Privacy & Security

By:

TFTC

Daily users:

69 -4

Rating:

5.00

(2)

Version:

0.0.8 Last updated: 2026-06-12

Version code:

6299490

Creation date:

2025-06-09

Risk:

Permissions:

<all_urls>
storage

Content scripts matches:

<all_urls>

Size:

4.43MB

URLs:

Website ,Privacy policy

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-07-09

Compare stats and ranking:

Ranking

# 13,285 ▼ 362

Other rankings

#1 in opportunity keyword 2

#3 in cost keyword 9

#34 in support keyword 14 ▼ 1

#45 in purchase keyword 25

#55 in bitcoin keyword 31 ▼ 1

Upgrade to see more rankings

Other platforms

Opportunity Cost (v0.0.8)

2,000 4.67

(30)

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

TFTC

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/opportunity-cost/

Website:

https://opportunitycost.app

User Reviews

by Ab*****, 2025-07-08

Works perfectly, doesn't seem to slow down sites at all. Completely reframes my thinking. I hope this was vibe coded!

by Fi*****, 2025-06-16

View all user reviews ›

Is Opportunity Cost Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Opportunity Cost requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details

Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****

Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Opportunity Cost is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details

High This extension was recently updated in the past month. New updates may not be stable or safe.
High **** ********* *** *** **** ****** ********* ********** *** *** ** ****** ** *****
Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
Good **** ********* *** **** **** *******