Good Tool

Name: Good Tool
Author: good-tool

By: good-tool

Free mortgage & rental calculators for smarter housing decisions. Compare payments, analyze refinancing, and more.

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Install

Features & Capabilities

Make smarter housing decisions with our collection of professional-grade mortgage and rental calculators right in your browser.

Key Features: • Mortgage Tools:

Calculate monthly payments (PITI)
Analyze refinancing options
Determine home affordability
View detailed amortization schedules

• Rental Property Tools:

Compare rent vs buy costs
Calculate rental yields
Analyze rental income potential
Determine investment break-even

Privacy-Focused:

No data collection or tracking
All calculations performed locally
Zero permissions required
Works offline

Perfect for homebuyers, property investors, and anyone making housing decisions.

User Growth & Download Statistics

Add-on

By:

good-tool

Daily users:

Version:

1.0.0 Last updated: 2025-01-03

Version code:

5868633

Creation date:

2025-01-02

Risk:

Size:

47.03KB

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-07-07

Compare stats and ranking:

Ranking

# 141,098 ▼ 7,798

Other rankings

#198 in payments keyword 20 ▼ 3

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:

good-tool

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/good-tool-calculators/

Website:

https://goodtool.org

Is Good Tool 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.

Good Tool does not require any sensitive permissions.

Risk impact analysis details

Low This permission has no access or impact on the user's system or data, thus carrying no risk.

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.

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

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
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