Calculator – Simple Calculator

App Lock LLC ❘ Freeware ❘
Android

Latest Version
Safe to install

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Reliable all-in-one calculator with unit conversion and themes

Human-built. AI-enhanced.

Boris Weber

09/03/2026

Calculator – Simple Calculator by App Lock LLC (BabyMaria Games) is a lightweight, easy-to-use app offering basic and scientific calculations, a unit converter, history, and light/dark themes with local-only data handling and optional after-call access, supported by a large install base and regular updates.

Calculator – Simple Calculator is a fast, easy-to-use calculator app designed for everyday calculations. It supports basic math, scientific functions, and quick unit conversions through a clean, intuitive interface.

Main Features
- Simple Calculator for daily computations with quick results: addition, subtraction, multiplication, division; supports percentage and square root.
- Scientific Calculator handles advanced math: trigonometric functions, logarithmic and exponential functions, and power operations.
- Unit Converter converts common units including length, weight, temperature, area, volume, speed, and more; works offline for convenience.
- Calculation History automatically saves calculations for review and can be cleared with one tap.
- Light & Dark Themes offer light mode, dark mode, and system default support.
- After-Call Calculator (Optional) quickly access the calculator after a phone call ends for continued calculations.
- Privacy Focused stores all calculations locally on the device; no unnecessary data collection; permissions are used only to enable selected features.

Overview

Calculator – Simple Calculator is a Freeware software in the category Games & Entertainment developed by App Lock LLC.

The latest version of Calculator – Simple Calculator is currently unknown. It was initially added to our database on 09/01/2026.

Calculator – Simple Calculator runs on the following operating systems: Android.

Calculator – Simple Calculator has not been rated by our users yet.

Pros

Simple, easy-to-use interface for basic daily calculations (add, subtract, multiply, divide, percentage, square root)
Includes scientific functions (trigonometric, logarithmic, exponential, power) for advanced calculations
Built-in unit converter covering common units (length, weight, temperature, area, volume, speed)
Calculation history that’s automatically saved and can be cleared with one tap
Light and dark themes with system-default support
Offline functionality for calculator and unit conversion
Optional after-call calculator feature for quick access after phone calls
Developer states a privacy-focused approach and claims no data is collected or shared with third parties
Wide reach (1M+ downloads) suggesting reasonable user adoption

Cons

Contains ads — can negatively affect user experience and screen space during use
Play Store data-safety details contain conflicting/unclear statements (e.g., “No data collected” alongside notes that “Data isn’t encrypted” and “Data can’t be deleted”), which reduces trust and transparency
Developer website (blogspot link) appears empty/placeholder, limiting available public info and support resources
Requires/uses permissions such as phone-call related features (after-call access) which some users may view as intrusive for a calculator app
No clear explanation of what, if any, local data (calculation history) is removable or how long it’s retained given the ambiguous safety notes
Small/individual developer (BabyMaria Games / RAJNIKANT BABULAL SHAH) — may mean slower updates or limited support compared with larger vendors
Recent changelog entries are minimal (bug fixes, performance improvements) with few details, making it hard to assess update quality
Presence of ads and minimal privacy metadata may make the app unsuitable for users needing strict privacy or ad-free environments

Boris Weber

I am an editor at UpdateStar. I started as a support engineer, and am now specialized in writing about general software topics from a usability and performance angle among others. I telecommute from UpdateStar’s Berlin office, when I am not working remote as a digital nomad for UpdateStar. When I'm not analyzing the latest software updates, you can find me exploring new cities, immersing myself in local cultures, and discovering innovative tech trends across the globe.

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