Calculi: Scientific Calculator
Calculi: Scientific Calculator Summary
Calculi: Scientific Calculator is a with in-app purchases iOS app in Tools by Michael Natole, Jr.. Released in Jul 2011 (14 years ago). It has 454 ratings with a 4.40★ (good) average. Based on AppGoblin estimates, it reaches roughly 1.3K monthly active users and generates around $<10K monthly revenue (100% IAP / 0% ads). Store metadata: updated Mar 4, 2025.
Store info: Last updated on App Store on Mar 4, 2025 .
4.4★
Ratings: 454
Screenshots
App Description
Calculators can be hard to use. Calculi plans to change all that.
SIMPLE BUT POWERFUL
Calculi is a smart calculator that is simple and easy to use, but with advanced features for power users. Whether you are trying to balance your checkbook or taking an advanced math class, this app will help you with all of your calculating needs.
CALCULATE ANYTHING
Calculi doesn’t just add two numbers together but can solve complex expressions using the order of operations. The multi-line display allows for small or large expressions. So go ahead and calculate anything and everything! Press the 2nd button to reveal more scientific functions.
UNIT CONVERSION
You can easily convert any of your calculations to a different unit across 17 categories such as length, area, and volume. Unit conversions are saved to your calculation history for easy review. A Calculi Pro subscription is required for this feature.
CURRENCY CONVERSION
Traveling abroad? Not sure how much your lunch costs? Calculi has you covered with support for over 30 different currencies around the globe (data is updated daily from the European Central Bank). A Calculi Pro subscription is required for this feature.
CONSTANTS
Common constants from both mathematical and scientific fields (astronomical, chemical, electromagnetic, etc.) are included for use in calculations.
DESIGNED WITH iOS 18 AND iPadOS 18 IN MIND
Calculi adapts to all the latest iOS and iPadOS devices. Even better, multitasking and multi-window support is available in all orientations on the iPad. Interactive widgets are included for calculations on your home screen, and Control Center widgets provide quick access. You can have Calculi wherever you need it.
GESTURES
Gestures are fun. So why not?
- 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
SUPERCHARGED HISTORY TAPE
Calculations from the history tape can be bookmarked for later and notes can be added for additional context. You can search across notes, expressions, and answers to find the calculation that you are looking for.
GET SHARING
Don’t be selfish. This history tape can be shared either as a single thread or the entire tape using numerous methods such as email, messaging,