# Math Keyboard

> An IME that facilitates inputting mathematical expressions and more.

Canonical page: [https://chrome-stats.com/d/com.fairbird.math\_keyboard](https://chrome-stats.com/d/com.fairbird.math_keyboard)

## Overview

- **ID:** `com.fairbird.math_keyboard`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** Fairbird Innovation
- **Category:** TOOLS
- **Downloads:** 165,292
- **Rating:** 2.69 / 5 (277 ratings)
- **Version:** 1.7.42
- **Last updated:** 2026-07-23
- **First published:** 2021-11-16
- **Publisher country:** HK
- **Size:** 35 MB
- **Data as of:** 2026-09-16
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.fairbird.math_keyboard)
- **Website:** [https://sites.google.com/view/fairbirdinnovation/home](https://sites.google.com/view/fairbirdinnovation/home)
- **Privacy policy:** [https://sites.google.com/view/fairbirdinnovation/privacy/math-keyboard](https://sites.google.com/view/fairbirdinnovation/privacy/math-keyboard)

## Description

**Math Keyboard** is an innovative Input Method Editor (IME) designed to facilitate the entry of mathematical expressions and more. It divides keys into specialized groups such as *Criteri-R* for targeted app input, *User* for customizable macros, and standard *Alphabets* and *General punctuations* for everyday use.

Users can redefine mutable keys to map to any function within the selected key group, allowing seamless integration with apps like **Criteri-R**, **Excel**, and **WolframAlpha**. Superscript and subscript forms are accessible via the Shift key where available. An in-app purchase unlocks a wealth of additional characters, including arithmetical symbols, Greek letters, mathematical operators, and more, with full visibility before purchase. Be sure to enable and select Math Keyboard in your system settings after installation to start typing math expressions effortlessly.

## Rankings

- #175,118 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_ADSERVICES_AD_ID`
- `android.permission.ACCESS_ADSERVICES_ATTRIBUTION`
- `android.permission.ACCESS_ADSERVICES_TOPICS`
- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.INTERNET`
- `android.permission.RECEIVE_BOOT_COMPLETED`
- `android.permission.WAKE_LOCK`
- `com.android.vending.BILLING`
- `com.fairbird.math_keyboard.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`
- `com.google.android.gms.permission.AD_ID`

## Review summary

Users find Math Keyboard conceptually useful but practically flawed due to poor functionality. Major issues include most symbols being locked behind an expensive paywall, difficulty switching keyboards, technical glitches like app hangs and purchase errors, and the app outputting text descriptions rather than actual symbols. Additionally, there are serious privacy concerns regarding data recording. Overall, the app is considered inconvenient, unreliable, and potentially risky to use.

### Pros

- The keyboard is suitable and helpful for typing math symbols in some cases.
- Conceptually, the app aims to provide a math keyboard which could be useful for users needing math symbols.
- Some users find the keyboard helpful compared to copying and pasting math symbols manually.

### Cons

- Many essential math symbols and features are locked behind a paywall, making usage difficult without payment.
- The app is difficult to use, with poor switching between the math keyboard and regular keyboards such as Gboard or Samsung keyboard.
- There are technical issues like the app not registering or opening properly, hanging on certain pages, or purchase errors for extra characters.
- It does not input actual math symbols but rather outputs English text descriptions of symbols, which is unhelpful for users wanting symbol input.
- Privacy concerns exist as the app requests enabling itself as a keyboard and potentially records all typed input, including sensitive information.

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