# Math by Voice: Mental Math

> Hear math problems, solve them mentally, and answer aloud—no typing.

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

## Overview

- **ID:** `com.spacemathtrainer`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** New Circle Shop
- **Category:** EDUCATION
- **Downloads:** 354
- **Version:** 1.4.5
- **Last updated:** 2026-08-23
- **First published:** 2025-12-16
- **Publisher country:** US
- **Size:** 25 MB
- **Data as of:** 2026-09-12
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.spacemathtrainer)
- **Website:** [https://max-2025.com](https://max-2025.com/)
- **Privacy policy:** [https://max-2025.com/privacy-policy.html](https://max-2025.com/privacy-policy.html)

## Description

X-PlanetMath (Math by Voice) is a voice-first mathematics learning app for children and adults.<br><br>Speak answers aloud, choose learning activities with voice commands, and explore mathematical topics step by step. Manual input is available only where it is genuinely useful.<br><br>KEY FEATURES<br><br>• voice navigation and spoken answers;<br>• a structured course of 10 interactive math lessons;<br>• addition, subtraction, multiplication, and division;<br>• fractions, percentages, powers, roots, and equations;<br>• configurable practice sessions;<br>• tests with increasing difficulty;<br>• narrated mathematical terms and explanations;<br>• statistics and saved progress;<br>• English and Russian languages;<br>• no advertising or required account registration.<br><br>10 INTERACTIVE MATH LESSONS<br><br>The course progresses from counting and arithmetic through fractions and formulas to equations, powers, and quadratic equations. Lessons combine spoken explanations, visual material, questions, and saved results.<br><br>VOICE PRACTICE<br><br>Choose an operation, difficulty, number of questions, and answer time. X-PlanetMath reads each problem aloud, listens to the spoken answer, and provides immediate feedback.<br><br>WHO IT IS FOR<br><br>• children learning mathematical foundations;<br>• students practicing mental arithmetic;<br>• adults maintaining calculation speed and concentration;<br>• learners who find spoken interaction more convenient than typing.<br><br>Microphone permission is required for voice features. Offline speech-recognition availability depends on the device and installed speech service.<br><br>Basic practice is available free of charge. Premium unlocks all operations and advanced learning modes with a one-time in-app purchase—no subscription.

## Rankings

- #1,501,531 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.INTERNET`
- `android.permission.MODIFY_AUDIO_SETTINGS`
- `android.permission.RECORD_AUDIO`
- `com.android.vending.BILLING`
- `com.android.vending.CHECK_LICENSE`
- `com.spacemathtrainer.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

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