# oii

> Adds ii (improvement indicator) metric to user profiles on the osu! website

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

## Overview

- **ID:** `oii`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Ferry
- **Category:** games-entertainment
- **Daily users:** 1,821
- **Weekly downloads:** 60
- **Rating:** 5.00 / 5 (3 ratings)
- **Version:** 2025.11.1
- **Last updated:** 2026-07-06
- **First published:** 2025-02-06
- **Size:** 244 KB
- **Data as of:** 2026-09-09
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/oii/)
- **Website:** [https://discord.gg/jRtEpAZMt4](https://discord.gg/jRtEpAZMt4)

## Description

The **oii** Chrome extension enhances your osu! experience by adding the ii (improvement indicator) metric directly to user profiles. This unique metric measures how quickly a player improves compared to the average osu! user, offering insight into player development.

With an ii of 1, a player is improving at an average pace; 2 means twice as fast, while 0.5 indicates half the average speed. The extension calculates ii based on players' performance points (pp) and playtime, allowing users to add additional playtime from other sources for accuracy. It also includes a "Goal pp" feature, projecting when a player may reach a target pp based on individual improvement curves. Note that the extension is still in early release, so expect updates and potential bugs.

## Rankings

- #2,292 — Overall
- #215 — Games & Entertainment

## Permissions and access

### Content script matches

- `osu.ppy.sh`

## Safety

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

### Analysis details

- Injects scripts into web pages, which may alter or extract site contents, resulting in a substantial risk.
- This extension has low user count. Unpopular extensions 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).

## Similar extensions and apps

- [osu! Improvement Indicator Plus](https://chrome-stats.com/d/osu-improvement-indicator-plus) — 105 users
- [osu-pp-torii-edition](https://chrome-stats.com/d/osu-pp-torii-edition) — 1 users
- [osu! Rank Trend Line](https://chrome-stats.com/d/osu-rank-trend-line) — 92 users, 1.00 / 5
- [osu! PP Calculator](https://chrome-stats.com/d/osu-pp-calculator) — 233 users, 4.00 / 5
- [ezpp!](https://chrome-stats.com/d/ezpp) — 828 users, 4.59 / 5
- [osu!idle Score extractor](https://chrome-stats.com/d/osu-idle-score-extractor) — 1 users
- [pp calculator](https://chrome-stats.com/d/pp-calculator) — 4,368 users, 5.00 / 5
- [PippiTrack](https://chrome-stats.com/d/pippitrack)
- [VIP Osu! Styler](https://chrome-stats.com/d/vip-osu-styler) — 42 users, 5.00 / 5
- [Hiroba Extension](https://chrome-stats.com/d/hiroba-extension) — 1 users
- [osu! Mutual finder](https://chrome-stats.com/d/osu-mutual-finder) — 18 users
- [osu!Skills helper](https://chrome-stats.com/d/osu-skills-helper) — 20 users

---

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