Android Mobile Application

Simple Calculator

Basic/Scientific Calculator, 60+ Converters, AI Problem Solver & Private Vault

📱 Android⚡ Free (Ad-Supported with Rewarded AI Uses)🔒 100% Private & Offline

Application Metadata

Package IDcom.katrex.simplecalculator
DeveloperKatrex Technologies
Version1.0.0
CategoryTools & Productivity
Content RatingEveryone (3+)

About Simple Calculator

Simple Calculator is a powerful, multi-functional utility app for Android devices. Designed for speed, convenience, and privacy, Simple Calculator combines essential math tools, 60+ converters, an AI-powered problem solver, and a passcode-protected private vault into one lightweight app.

Whether you are solving everyday math problems, converting units and currencies, scanning complex homework equations, or securing private files, Simple Calculator delivers a complete, secure experience.

Key Features

  • Calculator & 60+ Tools: Basic & scientific calculator plus 60+ financial, health, and unit converters. All calculations run on-device.
  • AI Problem Solver: Scan math equations with your camera. Uses Google ML Kit OCR on-device and NVIDIA AI API for step-by-step solutions.
  • Private Vault: Import photos, videos, and documents into a passcode/biometric protected storage area. 100% local, no cloud syncing.
  • Currency Converter: Real-time currency exchange rates fetched anonymously from Frankfurter API (api.frankfurter.dev).
  • Local History & Storage: Calculation history and app data stored locally via Android SharedPreferences. Uninstalling erases all data.
  • No User Account Required: No sign-up, registration, or collection of personal contact details.

App Specifications & Play Console Details

Application ID: com.katrex.simplecalculator

Developer: Katrex Technologies

Target Android OS: Android 6.0 (API Level 23) and above

Permissions Used: CAMERA (AI scanner only), INTERNET (Ads, AI solution API, Currency exchange rates)

Ad Integration: Google AdMob (Banner, Interstitial, Rewarded, App-Open)

Support Email: support@katrex.in

Google Play Console & Privacy Compliance

Simple Calculator strictly complies with Google Play Console policies and developer distribution guidelines. You can access the official privacy policy submitted to Google Play Console below: