# Caliper: Mental Math Trainer

> Boost calculation speed. Earn XP, track stats, and master mental mathematics.

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

## Overview

- **ID:** `com.crl.caliper`
- **Platform:** Android
- **Type:** Android app
- **Status:** Removed
- **Publisher:** CONTENT RESELLERS LIMITED
- **Category:** PRODUCTIVITY
- **Downloads:** 24
- **Version:** 1.0
- **Last updated:** 2026-04-01
- **First published:** 2026-04-01
- **Publisher country:** PK
- **Size:** 11 MB
- **Data as of:** 2026-08-09
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.crl.caliper)
- **Privacy policy:** [https://contentreseller.blogspot.com/p/privacy-policy.html](https://contentreseller.blogspot.com/p/privacy-policy.html)

## Description

Caliper: Mental Math Trainer<br><br>Master the art of rapid calculation with Caliper. Designed for anyone looking to boost their mental agility, Caliper transforms math practice into a rewarding daily habit. From basic arithmetic to complex challenges, sharpen your skills and track your growth with precision.<br><br>Dynamic Practice Modes Tailor your training sessions to your specific needs. Practice addition, subtraction, multiplication, and division individually, or test your versatility with mixed operation quizzes.<br>Personalized Difficulty You are in control. Adjust the number ranges and question counts to create the perfect challenge for your current skill level, whether you are just starting or looking to push your limits.<br><br>Level Up Your Skills Stay engaged with a progression system that rewards your accuracy. Earn XP for every correct answer, unlock new levels, and see your mathematical expertise evolve.<br>Visualize Your Progress Knowledge is power. Access detailed statistics and performance charts that highlight your improvement over time. Review your history to learn from mistakes and celebrate your successes.<br><br>Build Lasting Habits Consistency is key to mastery. Keep your momentum going with the integrated daily streak tracker, designed to keep you coming back for a quick brain workout every day.<br>Refined User Experience Enjoy a seamless interface that adapts to your environment. With full support for both light and dark themes and immersive edge-to-edge design, your focus remains entirely on your performance.<br><br>Features at a glance:<br>• Four fundamental operations plus a mixed mode.<br>• Fully customizable quiz parameters.<br>• Comprehensive statistics and performance trend tracking.<br>• Interactive leveling and XP system.<br>• Daily streak monitoring.<br>• Haptic feedback for a responsive feel.<br>• Clean, focused design for maximum productivity.<br><br>Challenge yourself, improve your focus, and achieve calculation speed you never thought possible. Start training with Caliper today!

## Permissions and access

### Permissions

- `android.permission.VIBRATE`
- `com.android.vending.CHECK_LICENSE`
- `com.crl.caliper.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

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