# Key & Textbook Mathematics 9

> Intermediate HSSC bise & fbise notes, past paper & solution for Math class 9

Canonical page: [https://chrome-stats.com/d/com.oef.keybook.mathclass9](https://chrome-stats.com/d/com.oef.keybook.mathclass9)

## Overview

- **ID:** `com.oef.keybook.mathclass9`
- **Platform:** Android
- **Type:** Android app
- **Status:** Removed
- **Publisher:** Open Educational Forum
- **Category:** EDUCATION
- **Downloads:** 236,898
- **Rating:** 3.89 / 5 (1,996 ratings)
- **Version:** 2.3.20
- **Last updated:** 2023-12-27
- **First published:** 2016-02-04
- **Size:** 9.60 MB
- **Data as of:** 2025-08-22
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.oef.keybook.mathclass9)
- **Website:** [https://openeduforum.com/](https://openeduforum.com/)
- **Privacy policy:** [http://openeduforum.com/privacy.html](http://openeduforum.com/privacy.html)

## Description

**Key & Textbook Mathematics 9** is a comprehensive educational Chrome extension designed to simplify learning for Class 9 students across Pakistan's Punjab, Sindh, KPK, Balochistan, and Gilgit Baltistan boards. Offering free access to HSSC BISE and FBISE notes, past papers, and complete solutions, it supports students preparing for exams like NTS, GAT, PPSC, and FPSC.

The extension features an intuitive interface enabling offline access to math textbooks, solved exercises, theorems, MCQs, and revision materials. Users can highlight, underline, zoom, print, and share content, fostering collaborative study. Covering essential topics such as Matrices, Real & Complex Numbers, Algebraic Expressions, Geometry, and Pythagoras Theorem, this tool promotes accessible education and is ideal for educators, teachers, and students aiming to master Class 9 mathematics efficiently.

## Permissions and access

### Permissions

- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.ACCESS_WIFI_STATE`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.INTERNET`
- `android.permission.POST_NOTIFICATIONS`
- `android.permission.RECEIVE_BOOT_COMPLETED`
- `android.permission.WAKE_LOCK`
- `com.android.vending.BILLING`
- `com.google.android.c2dm.permission.RECEIVE`
- `com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE`
- `com.google.android.gms.permission.AD_ID`

## Review summary

### Pros

- Clear and concise organization of chapters
- Step-by-step solutions provided
- Useful for both students and teachers
- Comprehensive coverage of topics
- Helps in easily finding solutions to questions

### Cons

- Requires internet connection
- Many instances of poor image quality and clarity
- Missing pages and unclear text
- Solutions are not always in sequence
- Some glitches and issues when opening chapters

## Similar extensions and apps

- [Key & Textbook Mathematics 10](https://chrome-stats.com/d/com.oef.keybook.mathclass10) — 199,452 users, 4.43 / 5
- [Key & Textbook General Math 10](https://chrome-stats.com/d/com.oef.keybook.newmathsclass10) — 78,579 users
- [Key & Textbook Mathematics 12](https://chrome-stats.com/d/com.oef.keybook.mathclass12) — 146,252 users
- [Key & Textbook Mathematics 11](https://chrome-stats.com/d/com.oef.keybook.mathclass11) — 247,077 users, 3.25 / 5
- [Key & Textbook English 9](https://chrome-stats.com/d/com.oef.keybook.english9) — 153,979 users
- [Key & Textbook physics class 9](https://chrome-stats.com/d/com.oef.physicstextbookIX.PTB) — 43,508 users
- [Key & Textbook Biology class 9](https://chrome-stats.com/d/com.oef.BIOLOGY.classIX) — 40,452 users
- [Key & Textbook English 10](https://chrome-stats.com/d/com.oef.keybook.english10) — 142,436 users
- [Key & Textbook Chemistry 9](https://chrome-stats.com/d/com.oef.chemistrytextbook.PTB) — 43,492 users
- [Key & Textbook Pakstudy 9](https://chrome-stats.com/d/com.oef.pakistanstudiestextbookandkeybook9.PTB) — 16,596 users
- [Key & Textbook Urdu class 9](https://chrome-stats.com/d/com.oef.Urdutextbookandkeybook9.PTB) — 28,067 users
- [Key & Textbook Computer 11](https://chrome-stats.com/d/com.oef.computer.science.solutionclass11) — 11,526 users

---

Source: [Chrome-Stats](https://chrome-stats.com/d/com.oef.keybook.mathclass9)