Simple Calculator
Overview
Simple Calculator, published by developer Mohammed Benguedda (SIMPLE APPS), is an all-in-one computing utility and multi-unit conversion suite for Android. Designed to serve as a versatile daily calculations hub, the application combines everyday arithmetic and scientific engineering tools with over twenty practical conversion modules.
The core user experience is built around an intuitive workspace. The default interface provides a responsive standard keypad for quick calculations, while a single tap on the engineering toggle switches the layout to include scientific operations such as trigonometry, common and natural logarithms, powers, and roots.
A dedicated calculation history tool tracks previously entered equations, allowing users to review, inspect, or reload past expressions back into the active editing field with a single tap. The app also gives users deep control over numerical formatting, allowing customization of active decimal places, digit-grouping delimiters, and localized numeral scripts.
Where Simple Calculator stands out is its built-in suite of specialized commercial and lifestyle converters. Rather than requiring multiple standalone applications, users can access conversion modules for currency exchange, loan amortization, GST, Body Mass Index (BMI), and date differences directly from the utility menu.
The application also includes practical personalization options, such as customizable interface themes, automated night mode scheduling, optional haptic and acoustic key feedback, and a keep-screen-on toggle for extended calculation sessions. While the free tier includes ad placements, the application maintains a compact storage footprint and broad device compatibility, making it a dependable multi-purpose calculator for daily use.
Pros & Cons
Comprehensive conversion suite covering over 20 financial, physical, and lifestyle metrics.
Accessible historical calculation logs with interactive formula reloading.
Broad numeral formatting controls supporting regional numeral systems and adjustable decimal precision.
Customizable interface featuring scheduled night modes, custom themes, and full-screen options.
Lightweight package size with broad device compatibility across modern and legacy Android versions.
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Intermittent background memory eviction when switching between memory-heavy applications.
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Ad banners and promotional interstitials are present in the free version.
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Lacks advanced symbolic algebra, matrix calculations, and integrated functional graphing.
Download
Get it on Google Play 
Get it on App Store FAQs
Can previous calculation formulas be edited after submission?
Yes, accessing the calculation history allows users to tap any recorded formula to reload it into the active calculation field.
Does the currency converter update exchange rates offline?
The currency converter caches the most recently retrieved online rates, allowing approximate offline conversions when disconnected from the network.
How is the engineering calculation interface activated?
Tapping the engineering calculator icon on the main interface reveals scientific operators, including trigonometric, logarithmic, and power functions.
Can the app prevent the phone display from turning off during work?
Yes, the application settings include a toggle to keep the screen active continuously during long calculation sessions.
Hot Reviews
Having GST, loan planning, unit conversions, and basic math combined in a single lightweight tool saves considerable time and storage space.
The ability to configure decimal precision, regional numbering formats, and automated dark modes makes the app comfortable for daily use.
When switching rapidly between heavy third-party apps, the calculator sometimes restarts its active workspace rather than remaining paused in background memory.