4.4.1 Safe to install
Calculi: A Powerful Scientific Calculator App

Calculi by Michael Natole, Jr. offers a user-friendly interface and advanced features, making complex calculations easy and efficient for both students and professionals.
Calculi: Making Calculations Simple and Powerful
Calculators can often be challenging to use, but Calculi aims to change that with its smart and user-friendly interface.
Simple Yet Advanced
Designed for both casual users and power users, Calculi offers a simple and intuitive calculator interface with advanced features. Whether you're balancing your checkbook or studying advanced math, this app will meet all your calculating needs.
Effortlessly Solve Complex Expressions
In addition to basic arithmetic operations, Calculi can solve complex expressions using the order of operations. Its multi-line display accommodates small or large expressions seamlessly. Explore scientific functions by simply pressing the 2nd button.
Unit Conversion at Your Fingertips
Convert calculations effortlessly across 17 categories such as length, area, and volume. Calculi conveniently saves unit conversions to your calculation history for easy review. Please note that unit conversion features require a Calculi Pro subscription.
Currency Conversion for International Travelers
When traveling abroad and curious about the cost of your lunch, Calculi comes to the rescue with support for over 30 currencies worldwide. Currency rates are updated daily from the European Central Bank. To access this feature, a Calculi Pro subscription is required.
Useful Constants
Incorporate common constants from various scientific and mathematical fields like astronomy, chemistry, and electromagnetism into your calculations using Calculi.
All-New Design for iOS 16
With an eye towards the latest iOS devices, Calculi flawlessly adapts to provide a seamless experience across all devices. Take advantage of multitasking on iPads in any orientation, and embrace multi-window support enabled on iPadOS. Plus, choose between light and dark modes to suit your preferences.
Simplify Calculations with Gestures
Calculi makes calculations more interactive with intuitive gestures:
- Long press the delete button to clear the display
- Long press the equals button to use the previous result or expression
- Long press the display to copy, paste, or share
- Long press any calculation item to reuse the expression or result
Easily Share and Review Calculations
Share your calculation history via email, messaging, or print. Whether you want to share a single thread or the entire tape, Calculi makes it effortless. It even has an iMessage app for sending calculations directly.
Calculations at Your Fingertips, Even on Your Wrist
Access Calculi on your Apple Watch for quick calculations on the go. Besides a four-function calculator, you'll find a helpful tip calculator and counter.
Enhanced Efficiency with External Keyboard and Trackpad Support
Pair an external keyboard or trackpad to unleash powerful shortcuts and full cursor support. Holding down the command key on your keyboard provides an overview of all available shortcuts.
Your Support Matters
If you've enjoyed using Calculi, please take a moment to leave a review. Your feedback is invaluable and helps us improve for future updates.
Unlocking More Features with Calculi Pro
A Calculi Pro subscription grants you access to several exclusive features:
- Unit Conversions
- Currency Conversions
- App Themes
- Colorful custom icons
- No Ads
Please Consider Supporting the Developer
If you appreciate the work of an independent app developer, you can show your support by sending a tip through Calculi's tip jar.
Subscription Details
- Payment will be charged to the iTunes Account at confirmation of purchase
- Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period
- Account will be charged for renewal within 24 hours prior to the end of the current period, and identify the cost of the renewal
- Subscriptions may be managed by the user, and auto-renewal may be turned off by going to the user's Account Settings after purchase
Terms of Use: https://www.calculiapp.com/terms.html
Privacy Policy: https://www.calculiapp.com/privacy-policy.html
Overview
Calculi: Scientific Calculator is a Freeware software in the category System Utilities developed by Michael Natole, Jr..
The latest version of Calculi: Scientific Calculator is 4.4.1, released on 04/05/2025. It was initially added to our database on 11/12/2023.
Calculi: Scientific Calculator runs on the following operating systems: iOS.
Users of Calculi: Scientific Calculator gave it a rating of 4 out of 5 stars.
Pros
- User-friendly interface with a sleek design.
- Offers a wide range of scientific functions including trigonometry, logarithms, and calculus.
- Ability to customize settings and create user-defined functions.
- Includes a history feature to review past calculations and results.
- No advertisements or in-app purchases.
- Available for both iOS and Android devices, providing flexibility for users.
Cons
- Does not offer advanced graphing capabilities compared to some other scientific calculator apps.
- May not be suitable for complex mathematical tasks or advanced scientific calculations.
- Limited support documentation or tutorials may hinder inexperienced users from fully utilizing all features.

Pete Milner
I'm Pete, a software reviewer at UpdateStar with a passion for the ever-evolving world of technology. My background in engineering gives me a unique insight into the intricacies of software, allowing me to provide in-depth, knowledgeable reviews and analyses. Whether it's the newest software releases, tech innovations, or the latest trends, I'm here to break it all down for you. I work from UpdateStar’s Berlin main office.
Latest Reviews by Pete Milner
Related
Calc 2M
Boasting an extensive user base of over half a million individuals, Calc 2M stands as a noteworthy calculator available on the App Store.Calcbot 2
Calcbot 2: The Sleek Calculator RedefinedCalculation!
Calculation is a user-friendly and advanced scientific calculator that boasts a convenient feature: a copyable expression history. Key features include: The ability to easily copy expressions and results with a simple double tap.Calculator ×
Designed exclusively for today's touch-screen devices, Calculator Pro is a groundbreaking calculator app that goes beyond the outdated design patterns of mechanical calculators.Calculator ÷
Introducing a highly functional and complimentary calculator application exclusively designed for iOS users. The Calculator app offers a seamless user experience with its intuitive interface and remarkable functionality.Calculator Pro: Math On Watch
The Calculator Pro app for the Apple Watch provides users with a robust solution for performing mathematical calculations seamlessly across both iPhone and Apple Watch platforms.Latest Reviews
![]() |
HWMonitor
Monitor your hardware with ease! |
![]() |
TweakPower
Boost Your PC Performance with TweakPower! |
![]() |
Kalorické Tabulky
Effortlessly Track Your Nutrition with Kalorické Tabulky |
![]() |
SRWare Iron
Enhanced Privacy and Security with SRWare Iron Browser |
![]() |
GOM Player
GOM Player: Your Ultimate Media Player |
![]() |
Hyper File Manager
Streamline Your File Management with Hyper File Manager |
![]() |
UpdateStar Premium Edition
Keeping Your Software Updated Has Never Been Easier with UpdateStar Premium Edition! |
![]() |
Microsoft Visual C++ 2015 Redistributable Package
Boost your system performance with Microsoft Visual C++ 2015 Redistributable Package! |
![]() |
Microsoft Edge
A New Standard in Web Browsing |
![]() |
Google Chrome
Fast and Versatile Web Browser |
![]() |
Microsoft Visual C++ 2010 Redistributable
Essential Component for Running Visual C++ Applications |
![]() |
Microsoft Update Health Tools
Microsoft Update Health Tools: Ensure Your System is Always Up-to-Date! |