Showdex

Name: Showdex
Rating: 4.963 (27 reviews)
Author: Tize.io

By: Tize.io

Pokémon Showdown extension that harnesses the power of parabolic calculus to strategically extract your opponents' Elo.

This add-on was removed from Firefox Add-ons Store on 2026-03-22

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Features & Capabilities

Showdex is a powerful Chrome extension designed for Pokémon Showdown players who want to enhance their competitive gameplay. By embedding an advanced damage calculator directly into the Showdown interface, it synchronizes automatically during battles, allowing players to perform up to 10 times more damage calculations with ease.

This extension not only saves valuable time by reducing manual clicks but also provides comprehensive information such as Smogon pages, move sets, and detailed descriptions of abilities, items, and moves. Praised by top competitive players for its convenience and efficiency, Showdex helps users focus more on strategic decision-making and less on configuration. Whether you're a casual player or a serious contender, Showdex is an indispensable tool for elevating your Pokémon battling experience.

User Growth & Download Statistics

Add-on Games Developer Tools

By:

Tize.io

Daily users:

10,416

Rating:

4.96

(27)

Version:

1.3.0 Last updated: 2025-09-28

Version code:

6042835

Creation date:

2022-09-09

Risk:

Permissions:

clipboardRead
clipboardWrite
*://play.pokemonshowdown.com/*
*://*.psim.us/*
*://play.radicalred.net/*

Content scripts matches:

play.pokemonshowdown.com
*.psim.us
play.radicalred.net

Size:

3.51MB

Email:

ke*****@tize.io

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-03-22

Compare stats and ranking:

Other platforms

Showdex (v1.3.0)

80,000 4.82

(72)

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:

Tize.io

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/showdex/

Email:

ke*****@tize.io

Website:

https://www.smogon.com/forums/threads/showdex-an-auto-updating-damage-calculator-built-into-showdown.3707265

Permission Change History

2023-01-01: Version 1.1.0 → 1.1.1

Add Permissions: *://play.radicalred.net/*

2022-12-15: Version 1.0.6 → 1.1.0

Add Permissions: *://*.psim.us/*

Remove Permissions: *://dawn.psim.us/* *://rom.psim.us/* *://smogtours.psim.us/* *://sports.psim.us/*

2022-10-11: Version 1.0.2 → 1.0.3

Add Permissions: clipboardRead clipboardWrite *://rom.psim.us/*

User Reviews

Users find Showdex a clean, efficient tool that significantly saves time and accurately computes most damage calculations in Pokémon Showdown. However, recurring issues include difficulty detecting enemy tera types in some battle modes, incorrect move effectiveness displays, and iOS Firefox compatibility problems. Despite these, many users appreciate its ease of use and consider it a valuable asset that could be perfect with further polish.

Pros

Saves significant time when using Pokémon Showdown.
Provides accurate damage calculations for the majority of cases.
Clean and easy-to-use interface that users appreciate.
Effective tool for 'easy-verify' damage calculations.

Cons

Issues with registering enemy tera types in Random Battles mode.
Problems displaying move effectiveness correctly, sometimes showing moves as immune or N/A when they should hit.
Compatibility issues on iOS with Firefox, prompting download even when already installed.

Recent reviews

by Fi*****, 2026-03-19

by Ta*****, 2026-02-23

by Mo*****, 2025-07-13

View all user reviews ›

Is Showdex 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.

Showdex requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details

High Injects scripts into web pages, which may alter or extract site contents, resulting in a substantial risk.
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Low ******* ****** ** *** ********* ******** ******************** ******** **************

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.

Showdex may not be trust-worthy. Avoid installing if possible unless you really trust this publisher.