Download Android Apps and Games
AppBrain
  • Apps
  • Apps being viewed right now Trending apps today Most popular apps All-time most downloaded apps Top rated apps
  • Intelligence ▾
    Intelligence overview → Track any Android app or your whole market
    Track & analyze
    Keyword Tracker & OptimizerTrack & improve Play rankings App Performance ReportOne-off PDF for any app StatisticsFree Android & Play market stats
    Promote your app
    Featured Apps App Links
  • Intelligence
  • Pricing
  • Dashboard
  • Sign up
  • Log in
Last updated on: 2026-07-09
Android Apps > Tools > Calculator
Calculator icon

Calculator

1.18
Notes - To Do List
4.14
3,005 reviews
1,000,000+
Downloads
Free

All-in-one calculator: basic, scientific, unit & currency converter

Calculator Screenshot 1 of 7
Calculator Screenshot 2 of 7
Calculator Screenshot 3 of 7
Calculator Screenshot 4 of 7
Calculator Screenshot 5 of 7
Calculator Screenshot 6 of 7
Calculator Screenshot 7 of 7

Calculator by Notes - To Do List is a versatile, free app offering basic and scientific math, plus a unit and currency converter, all in one. It ranks in the TOOLS category across MX (#29), BR (#44), and FR (#73) with a solid 3.96 rating from thousands of users, and benefits from a large total install base with strong recent momentum. The app supports offline use and a floating mode for multitasking, making it a practical choice for students, engineers, and everyday users.

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.

How many times has Calculator been downloaded?

Calculator has been downloaded 3.8 million times. In the last 30 days, the app was downloaded 330 thousand times.

What is the rating of Calculator?

Calculator is rated 4.14 out of 5 stars, based on 3 thousand ratings.

Is Calculator free?

Calculator is free to download. The APK download size is 16.43 MB. The latest version available is 1.18. The last update was on June 23, 2026.

What are the requirements for Calculator?

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:

๐Ÿงฎ Simple & Scientific Calculator

โฆฟ Simple Calculator: Perfect for quick arithmetic. Add, subtract, multiply, and divide with a clean, easy-to-read layout.

โฆฟ 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.

๐Ÿ“ฑ Floating Calculator

โฆฟ 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.

๐Ÿ“ Unit Converter

โฆฟ 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.

๐Ÿ“ Smart Calculation History

โฆฟ 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.

๐ŸŽจ Customizable Themes

โฆฟ 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.

Who is this for?

โฆฟ Students: Solve math problems and convert units for science class.
โฆฟ Engineers: Access scientific functions and history on the fly.
โฆฟ 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!
Show more Show less

More data about Calculator

Price Free to download
Total downloads 3.8 million
Recent downloads 330 thousand
Rating 4.14 based on 3 thousand ratings
Ranking Not ranked
Version 1.18
APK size 16.4 MB
Number of libraries 0
Designed for Android 8.0+
Suitable for Everyone
Ads Contains ads

App Performance Report

Get a detailed PDF report for Calculator with download trends, rating history, and key performance statistics โ€” useful for competitive research or tracking your own app. Learn more

Get PDF Report โ€” $29

Alternative downloads for the Calculator app

Higher rated
Calculator โ€“ Simple Calculator icon Calculator โ€“ Simple Calculator
SD Sol App
4.5
Free
50,000+
Calculator icon Calculator
Origin Infotech Apps
4.0
Free
50,000+
Higher rated
Calculator - Simple Calculator icon Calculator - Simple Calculator
Video Player & Photo Video Maker App
4.5
Free
1,000,000+
Higher rated
Calculator icon Calculator
Vigen Mobile App
4.5
Free
50,000+
Basic Calculator Plus icon Basic Calculator Plus
Appgeneration - Radio, Podcasts, Games
4.3
Free
1,000,000+
No ads
Calculator Begins icon Calculator Begins
Pain In My Processor
4.9
Free
10,000+
Calculator icon Calculator
Innov'IT
4.2
Free
10,000,000+
Higher rated
All-in-One Calculator App icon All-in-One Calculator App
OTVINA Co.,LTD
4.6
Free
10,000+

Calculator compared with similar apps

Common keywords of similar apps

Floating Engineering Tap Light Dark Multitask Engineers Arithmetic Icon Homework View Apps Numbers Calculator Scientific App Unit Simple Calculation History Converter Math Calculate Mode Complex Functions Smart Equations Calculations Perfect Easy Units Basic Daily Problems Students Features Access Convert

Keywords missing from this app

Currency Advanced Time Fast Quick Everyday Accurate Professionals Percentage Ai Date Solve Tools Discount Free Loan Currencies Tool Solver Designed Experience Finance Length Call

More from Notes - To Do List

Notes - Simple Notepad icon Notes - Simple Notepad
Notes - To Do List
4.1
Free
500,000+

Google Play Rating history and histogram

Rating history
Subscribe to see the full rating timeline

Downloads over time

Downloads over time
Subscribe to see download velocity and history

Calculator has been downloaded 3.8 million times. Over the past 30 days, it averaged 11 thousand downloads per day.

Changelog of Calculator

Show changelog

Developer information for Notes - To Do List

Notes - To Do List

dailydiarytools@gmail.com

Website

Legal name:

Address:

Are you the developer of this app? Join us for free to see more information about your app and learn how we can help you promote and earn money with your app.
I'm the developer of this app

Share Calculator

Comments on Calculator for Android

โ˜…โ˜…โ˜…โ˜…โ˜… Anju Vyas ยท 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
โ˜…โ˜…โ˜…โ˜…โ˜… Thobile Nzimande ยท Jul 3, 2026
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
โ˜…โ˜†โ˜†โ˜†โ˜† charles mcdonald ยท 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
โ˜…โ˜†โ˜†โ˜†โ˜† David Clark ยท 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?
โ˜…โ˜†โ˜†โ˜†โ˜† Al Par ยท Jun 14, 2026
Why does a calculator need access to things like my call log ect... abit weird so uninstalled straight away
โ˜…โ˜†โ˜†โ˜†โ˜† Juanita Jac ยท May 28, 2026
Frustrates the entire experience by complicating navigation between apps and hogs up the screen with unwanted adds. It turned my phone to a billboards adds machine

Google Play Rankings for Calculator

This app is not ranked

Technologies used by Calculator

17 permissions
Subscribe to see full permission and library details
Trust & Safety: The app requests a broad set of permissions including ads-related IDs, network state, overlay and phone-related permissions. It provides useful calculator features (offline operation, after-call tools) but users should review permissions and monitor how data is used, especially for ad-supported functionality.
Calculator โ€“ Simple Calculator icon Calculator โ€“ Simple Calculator
Calculator icon Calculator
Calculator - Simple Calculator icon Calculator - Simple Calculator
Calculator icon Calculator
Basic Calculator Plus icon Basic Calculator Plus
Calculator Begins icon Calculator Begins
Calculator icon Calculator
All-in-One Calculator App icon All-in-One Calculator App

Back to top
AppBrain Intelligence premium content

Subscribe now to get full and unlimited access to AppBrain Intelligence. You'll have access to:

  • App Intelligence dashboard (performance timeline, competitor comparison, country rankings, insight cards)
  • Detailed ranking data per app
  • Full timeline per developer
  • Device market shares data per country
1 Month

$75/mo
(billed every month)

SAVE 0%
Subscribe
3 Months

$65/mo
($195 billed every 3 months)

SAVE 13%
Subscribe
1 Year

$57.50/mo
($690 billed every year)

SAVE 23%
Subscribe
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.

AppBrain is a directory focused on discovering great apps and games. We give statistics, rankings and search options that Google Play and the App Store don't have. All trademarks are owned by their respective owners. AppBrain doesn't offer APKs or binaries, and always lets users install the official version from Google Play or the App Store.

More apps

  • Top Android apps being viewed
  • View Morrisons Wholesale
  • Slovak - Listening Speaking stats
  • sahara india Scheme calculator

Android Statistics

  • Android statistics
  • Google Play Developer stats
  • Trending Android Apps
  • Top popular Apps
  • Buy the best Android phone

About AppBrain

  • Contact
  • Privacy
  • Documentation
  • DMCA takedowns
  • Articles
  • Blog
  • How to improve the earnings of your ad units
© 2010-2026 - AppBrain