All-in-one calculator: basic, scientific, unit & currency converter
Pros & Cons
All-in-one tool: basic, scientific, unit and currency conversions
Floating mode enables multitasking without leaving the current app
Calculation history for quick recall and re-use of formulas
After Call screen and quick access post-call utilities
Offline functionality for basic and scientific calculations
Light and Dark themes for readability and battery efficiency
Lacks explicit AI-powered features or professional-grade solver tools mentioned in competing apps
Uses a broad permission set (ads, overlays, phone state) which may raise privacy considerations for some users
About Calculator
Calculator is a tools app developed by Notes - To Do List.
Download Statistics
Calculator has been downloaded 3.8 million times. In the last 30 days, the app was downloaded 36 thousand times.
User Ratings
Calculator is rated 4.04 out of 5 stars. The rating is based on 3.2 thousand ratings.
App Information
Calculator is FREE to download. The APK download size is 35.72 MB. The latest version available is 1.20. The last update was on July 26, 2026.
Technical Requirements
Calculator requires Android 8.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play December 2025.
Description
Calculator: Scientific, Unit Converter & Floating Mode!
Experience the most versatile free calculator app designed with a sleek, modern interface. Whether you need a simple calculator for daily math or a powerful scientific calculator for complex problems, this app adapts to your needs.
Switch seamlessly between Light and Dark modes to match your style, and multitask like a pro with our unique Floating Calculator feature!
Why this is the best Calculator App:
Basic calculator for students, engineers, and everyday users, this app functions like a physical calculator but adds digital power. It combines a unit converter, smart calculation history.
Simple Calculator can turn into a scientific calculator, allowing you to calculate more complex equations such as quadratic equations, sine, cosine, and tangent.
Using this calculator app, you can perform both arithmetic and scientific calculations. You can also re-enter previously calculated formulas as they are by tapping the formula in the calculation history. This simple calculator utility for Android provides the four fundamental operations as well as engineering calculations.
Key Features:
🧮 Simple & Scientific Calculator
⦿ Simple Calculator: Perfect for quick arithmetic. Add, subtract, multiply, and divide with a clean, easy-to-read layout.
⦿ Scientific Calculator: Tap the engineering calculator icon to open the scientific calculator. Access advanced scientific math functions including log, ln, sin, cos, tan, square root (√), and parentheses for complex equations. Perfect for math homework and engineering tasks.
📱 Floating Calculator
⦿ Multitask effortlessly! Enable the floating view to keep a compact calculator overlay on your screen while using other apps. Calculate numbers while reading documents or browsing the web without switching apps.
📏 Unit Converter
⦿ Tap the unit calculator button to convert and calculate units. You can easily calculate different units such as area, length, and temperature, and more. It’s the perfect companion for homework or technical projects.
📝 Smart Calculation History
⦿ Never lose your progress. The calculation history saves your past computations automatically. Tap the calculation records icon to view the previous results, check for errors, or recall numbers for new calculations.
🎨 Customizable Themes
⦿ Your calculator, your way. Choose between a crisp Light Mode for daytime clarity or a battery-saving Dark Mode that’s easy on the eyes at night.
📞 Calculatorplus – Smart After-Call Screen
⦿ Quickly access information after a call. The after-call screen displays details and offers shortcuts to your essential tools. ⦿ Quick access: open the calculator or currency converter immediately after a call.
Who is this for?
⦿ Students: Solve math problems and convert units for science class. ⦿ Engineers: Access scientific functions and history on the fly. ⦿ Everyone: A reliable and easy-to-use tool for daily use, shopping, and work.
Download now and upgrade to the most convenient calculator app with floating window smart features!
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It's very easy to use it to check relationships. Ex: $r$ between "filter change hours" vs "downtime minutes" to see if delays are there or not
★★★★★Anju Vyas· Jul 1, 2026
Bahut achcha aur Beirut Sundar project Beirut cache Hain aaramdayak hai Har koi khareed sakta hai Beirut Sundar hai I like u Missiho
★☆☆☆☆charles mcdonald· Jun 7, 2026
Why does a calculator need access to your phone? Google is the worst thing to happen to society in my lifetime. Should be stripped of all access it has to society and it's snooping. Worse than a Russian spy
★☆☆☆☆David Clark· Jun 12, 2026
Won't even open without you giving it every single permission. Why the hell does a calculator need access to my phone calls?
★☆☆☆☆ajinkya gosavi· Jul 22, 2026
One of the worst app ever. Before using there are so many ads are there. Useless app.
★☆☆☆☆Devin Bonewitz· Jun 19, 2026
App sent notifications that said test & hi not sure why I got two notifications like that in the middle of the night, but I uninstall the app as soon as I have seen those two notifications
Google Play Rankings for Calculator
This app is not ranked
Technologies used by Calculator
Calculator is requesting 31 permissions and is using 0 libraries.
Show details
Each subscription will automatically renew 3 days before the expiration date for
the same time period. Subscriptions can be cancelled at any time before the renewal.
