All in One Calculator13.1.1 - App Store
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Publisher Description
All in One (aio) Calculator puts three calculators and a unit converter in one app: infix, RPN and programmer, with fractions, statistics, and close to 500 units in 38 measurements. Ideal for everyday use or more complex needs. The app is free and without ads. It's an easy-to-use, modern calculator.
General features
. Designed for iPhone and iPad
. Sidebar and tab bar for easier navigation and sharing of data
. Open a sidebar entry in its own window: drag it to the edge of the screen, pinch it apart, or use its context menu
. Drag a calculator button to the edge of the screen to create a new calculator window
. Widget showing recent results
. Context menus throughout for quick access to many features
. Scribble
. Windowed apps and Stage Manager
. Multitasking
. Quick Notes
. Capture text
. Keyboard shortcuts
. Mark favorites and edit the lists to show only what you use
. Full support for drag and drop
. Light and Dark appearance
. Quick Guide for easy onboarding
. Toolbar for easy access to many features
. Accessibility features like VoiceOver and Voice Control
. Speak any result aloud
. Home Screen quick actions from the app icon
. Delete button for easy editing
. Undo and redo
. Adjustable precision for decimal results, with a slider for quick changes
. Spotlight Search
. App Intents for use with Shortcuts
Calculator Views
. Expressions written in mathematical form
. Views for Infix (standard), RPN and Programmer
. Statistical functions (average, standard deviation and more)
. Expression editing
. Share results, including using AirDrop
. Common memory functions
. View contents in memory
. Multiline expression in portrait and landscape
. Every function is available in portrait, so there is no need to rotate the device: slide the keypad down to reveal the advanced functions
. Landscape shows more keys at once
. Groups of advanced functions: switch from the toolbar or by swiping the keypad, and long press the toolbar button to see each group by name
. Pinch the result to adjust the precision
. Various button styles
. Number pad on the right or left for better accessibility
Unit Converter
. Close to 500 units in 38 measurements, including Currency
. Share a result, or paste it back into the calculator for further use
. Search measurements and units
. Favorite units sync across your devices, and with Converter of Units, through iCloud
History
. History (paper tape) lets you see and use previous calculations
. Results from the calculator and the unit converter are saved here
. Annotate history entries to remember what they were
. Search in history
. Share a previous result, or paste it back into the calculator
. Optional iCloud sync across your devices
Information
. Detailed in-app help for every feature
. Table of contents and search allow you to find topics of interest
RPN
. Shows as many rows in the stack as needed
. Shows the expression that generates the result
. Drag and drop among rows
. Buttons to manipulate the stack
Programmer
. Support for hexadecimal, octal and binary number systems
. Manipulate individual bits
. Many bitwise operators
. Shows equivalent ASCII and Unicode characters
Fractions
. Fractions can be converted to different forms, including decimal
. Fraction keys can be changed to other keys in portrait mode
You no longer need several calculators, nor a unit converter. Future updates will continue to add more features.
Enjoy our app that, as always, is free and without ads!
Version History Thank you for using aio Calculator. It's regularly improved and modernized to better serve you.
Recent changes include:
• Paste to Calculator is back in the Unit Converter's unit menu.
• In degree mode, cos(90°) now shows 0 instead of a tiny number like 6.1e-17, and other right angles are exact too.
• tan(0) and tan(180°) no longer show an error.
• RPN: after swiping a stack row to Clear or Delete it, the row can be swiped again right away.
• Programmer: pasting an expression such as 123 + 321 = into a row now enters its result.
• The Unit Converter grid no longer flickers when the device is rotated.
• The Unit Converter's Feet Inch unit shows its value again, such as 8 ft 2.4 in.
• Touching and holding a measurement in the Unit Converter's list shows its menu again.
• Speed / Velocity adds Inch/Minute (in/min) and Millimeter/Minute (mm/min).
• Unit Converter favorites now sync through iCloud across your iPhone and iPad, and with the Converter of Units app. Sync is on when you're signed in to iCloud; turn it off with Sync via iCloud under Converter Favorites in the app's settings.
• History iCloud sync no longer stops after moving to a new iPhone or iPad. If sync is ever paused because the iCloud account changed, the app now says so and offers to resume it.
• Accessibility: History comments have a VoiceOver label and grow with larger text, the root keys read as a single button, the sidebar's secondary text and the currency update time are easier to read, and each unit's actions button is easier to tap.
• General fixes and improvements. 13.1.1 Oct 5 Thank you for using aio Calculator. This is a big modernization release.
• Expressions now resemble more the way they are written mathematically
• Enter a function before its value: touch sin and it opens sin(, with the closing paren dimmed until you close it. The whole value can be typed inside, operators included — sin(20 + 30)
• The nth root takes its radicand first and its index after the closing paren; permutations and combinations take the population, then the number drawn
• Permutations and combinations are written P(8,3) and C(8,3), and the population is now entered first: 8 P 3. Expressions entered the previous way answer differently
• History can be shared across your devices through iCloud — off until you turn it on in Settings
• Unit Converter results are now saved in History, listed with your calculations in date order. Settings in History shows calculations only, conversions only, or both
• A saved conversion can be sent back to the converter with Paste to Converter, which works it out again at today's rates
• The converter can show a comment field above the units, kept with the conversion saved in History
• Each currency in the converter now shows its country's flag, making the one you want quicker to spot
• Button style and number pad location moved to the app's page in Settings, leaving the calculator's settings menu to the things you change while calculating
• Refreshed, translucent Liquid Glass toolbars across the app
• The calculator's toolbar now matches the rest of the app on iPad — the same size, spacing and grouping as History, the Unit Converter and Information
• Toolbar buttons grow with the system text size, so they stay readable at larger accessibility settings
• Improved VoiceOver and Voice Control: clearer names for buttons and menus, and numbers read naturally
• Hold the Function Group button to choose a group by name — trigonometry, hyperbolic or statistics — with the current one marked. A tap still steps to the next
• Calculator, History, and search rebuilt for a faster, smoother experience
• The Information guide is refreshed: current pictures, sized to fit the screen in either orientation and following Light and Dark appearance. Rotate the device to see any of them larger
• General fixes and improvements 13.1.0 Sep 30 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• General improvements and corrections 13.0.4 Apr 12 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Updated for iOS and iPadOS 26, and new iPhone 17 (all models)
• General improvements and corrections 13.0.3 Mar 4 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Updated for iOS and iPadOS 26, and new iPhone 17 (all models)
• General improvements and corrections 13.0.2 12/19/2025 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Updated for iOS and iPadOS 26, and new iPhone 17 (all models)
• General improvements and corrections 13.0.1 12/16/2025 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Updated for iOS and iPadOS 26, and new iPhone 17 (all models)
• General improvements and corrections 13.0.0 12/12/2025 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Corrected problem where it was not possible to scroll to the start of a long expression when editing it
• General improvements and corrections 12.1.4 10/16/2025 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Corrected problem in RPN calculator with use of +/- after Enter
• General improvements and corrections 12.1.3 07/29/2025 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Removed alert if user not signed into iCloud
• General improvements and corrections 12.1.2 06/21/2025 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Corrected problem where selected measurement would not highlight on iPhone in landscape
• Corrected problem where sometimes tab bar would now show on iPhone
• Corrected problem where navigation bar would not show on larger iPhone when using calculator in landscape
• General improvements and corrections 12.1.1 05/06/2025 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Improvements for use in iOS/iPadOS 18.x
• Converter now has conversions for Concentration - Glucose
• General improvements and corrections 12.1.0 04/10/2025 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Improvements in iOS/iPadOS 18.x
• Conversion for Concentration - Glucose
• General improvements and corrections 12.0.0 04/03/2025 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Corrected problem with Electric Vehicle Efficiency converter
• General improvements and corrections 11.3.4 06/20/2024 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Added Microliter (µl) to Volume - Liquid Capacity
• General improvements and corrections 11.3.3 05/25/2024 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Corrected occasional crash
• General improvements and corrections 11.3.2 02/17/2024 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Corrected occasional crash
• General improvements and corrections 11.3.1 01/24/2024 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Added Feet Inch to Length measurement in Unit Converter
• General improvements and corrections 11.3 01/03/2024 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Updated for iOS/iPadOS 17.x
• Corrected crash when using AppIntents in Shortcuts
• Added App Intent for finding results on given date
• Added App Intent for finding results with some text
• General improvements and corrections 11.2.1 12/10/2023 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Updated for iOS/iPadOS 17
• Corrected crash in History when all items are deleted
• General improvements and corrections 11.2.0 11/21/2023 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Corrected problem with enable/disable of numeric pad buttons in programmer mode when base is changed
• General improvements and corrections 11.1.4 04/05/2023 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Corrected occasional crash when deleting history item from sidebar
• General improvements and corrections 11.1.3 01/24/2023 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• General improvements and corrections 11.1.2 01/11/2023 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Corrected problem that was preventing widget data from updating
• Corrected crash in iOS 14 related to introduction of widget
• General improvements and corrections 11.1.1 01/05/2023 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Added Electric Vehicle Efficiency to Measurements
• General improvements and corrections 11.1.0 11/29/2022
About All in One Calculator
The company that develops All in One Calculator is Ramon Rivas. The latest version released by its developer is 13.1.1.
To install All in One Calculator on your iOS device, just click the green Continue To App button above to start the installation process. The app is listed on our website since 2026-10-13 and was downloaded 0 times. We have already checked if the download link is safe, however for your own protection we recommend that you scan the downloaded app with your antivirus. Your antivirus may detect the All in One Calculator as malware if the download link is broken.
How to install All in One Calculator on your iOS device:
- Click on the Continue To App button on our website. This will redirect you to the App Store.
- Once the All in One Calculator is shown in the iTunes listing of your iOS device, you can start its download and installation. Tap on the GET button to the right of the app to start downloading it.
- If you are not logged-in the iOS appstore app, you'll be prompted for your your Apple ID and/or password.
- After All in One Calculator is downloaded, you'll see an INSTALL button to the right. Tap on it to start the actual installation of the iOS app.
- Once installation is finished you can tap on the OPEN button to start it. Its icon will also be added to your device home screen.
Program Details
System requirements
Download information
Pricing
Version History
version 13.1.1
posted on 2026-10-13
Version History Thank you for using aio Calculator. It's regularly improved and modernized to better serve you.
Recent changes include:
• Paste to Calculator is back in the Unit Converter's unit menu.
• In degree mode, cos(90°) now shows 0 instead of a tiny number like 6.1e-17, and other right angles are exact too.
• tan(0) and tan(180°) no longer show an error.
• RPN: after swiping a stack row to Clear or Delete it, the row can be swiped again right away.
• Programmer: pasting an expression such as 123 + 321 = into a row now enters its result.
• The Unit Converter grid no longer flickers when the device is rotated.
• The Unit Converter's Feet Inch unit shows its value again, such as 8 ft 2.4 in.
• Touching and holding a measurement in the Unit Converter's list shows its menu again.
• Speed / Velocity adds Inch/Minute (in/min) and Millimeter/Minute (mm/min).
• Unit Converter favorites now sync through iCloud across your iPhone and iPad, and with the Converter of Units app. Sync is on when you're signed in to iCloud; turn it off with Sync via iCloud under Converter Favorites in the app's settings.
• History iCloud sync no longer stops after moving to a new iPhone or iPad. If sync is ever paused because the iCloud account changed, the app now says so and offers to resume it.
• Accessibility: History comments have a VoiceOver label and grow with larger text, the root keys read as a single button, the sidebar's secondary text and the currency update time are easier to read, and each unit's actions button is easier to tap.
• General fixes and improvements. 13.1.1 Oct 5 Thank you for using aio Calculator. This is a big modernization release.
• Expressions now resemble more the way they are written mathematically
• Enter a function before its value: touch sin and it opens sin(, with the closing paren dimmed until you close it. The whole value can be typed inside, operators included — sin(20 + 30)
• The nth root takes its radicand first and its index after the closing paren; permutations and combinations take the population, then the number drawn
• Permutations and combinations are written P(8,3) and C(8,3), and the population is now entered first: 8 P 3. Expressions entered the previous way answer differently
• History can be shared across your devices through iCloud — off until you turn it on in Settings
• Unit Converter results are now saved in History, listed with your calculations in date order. Settings in History shows calculations only, conversions only, or both
• A saved conversion can be sent back to the converter with Paste to Converter, which works it out again at today's rates
• The converter can show a comment field above the units, kept with the conversion saved in History
• Each currency in the converter now shows its country's flag, making the one you want quicker to spot
• Button style and number pad location moved to the app's page in Settings, leaving the calculator's settings menu to the things you change while calculating
• Refreshed, translucent Liquid Glass toolbars across the app
• The calculator's toolbar now matches the rest of the app on iPad — the same size, spacing and grouping as History, the Unit Converter and Information
• Toolbar buttons grow with the system text size, so they stay readable at larger accessibility settings
• Improved VoiceOver and Voice Control: clearer names for buttons and menus, and numbers read naturally
• Hold the Function Group button to choose a group by name — trigonometry, hyperbolic or statistics — with the current one marked. A tap still steps to the next
• Calculator, History, and search rebuilt for a faster, smoother experience
• The Information guide is refreshed: current pictures, sized to fit the screen in either orientation and following Light and Dark appearance. Rotate the device to see any of them larger
• General fixes and improvements 13.1.0 Sep 30 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• General improvements and corrections 13.0.4 Apr 12 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Updated for iOS and iPadOS 26, and new iPhone 17 (all models)
• General improvements and corrections 13.0.3 Mar 4 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Updated for iOS and iPadOS 26, and new iPhone 17 (all models)
• General improvements and corrections 13.0.2 12/19/2025 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Updated for iOS and iPadOS 26, and new iPhone 17 (all models)
• General improvements and corrections 13.0.1 12/16/2025 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Updated for iOS and iPadOS 26, and new iPhone 17 (all models)
• General improvements and corrections 13.0.0 12/12/2025 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Corrected problem where it was not possible to scroll to the start of a long expression when editing it
• General improvements and corrections 12.1.4 10/16/2025 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Corrected problem in RPN calculator with use of +/- after Enter
• General improvements and corrections 12.1.3 07/29/2025 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Removed alert if user not signed into iCloud
• General improvements and corrections 12.1.2 06/21/2025 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Corrected problem where selected measurement would not highlight on iPhone in landscape
• Corrected problem where sometimes tab bar would now show on iPhone
• Corrected problem where navigation bar would not show on larger iPhone when using calculator in landscape
• General improvements and corrections 12.1.1 05/06/2025 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Improvements for use in iOS/iPadOS 18.x
• Converter now has conversions for Concentration - Glucose
• General improvements and corrections 12.1.0 04/10/2025 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Improvements in iOS/iPadOS 18.x
• Conversion for Concentration - Glucose
• General improvements and corrections 12.0.0 04/03/2025 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Corrected problem with Electric Vehicle Efficiency converter
• General improvements and corrections 11.3.4 06/20/2024 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Added Microliter (µl) to Volume - Liquid Capacity
• General improvements and corrections 11.3.3 05/25/2024 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Corrected occasional crash
• General improvements and corrections 11.3.2 02/17/2024 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Corrected occasional crash
• General improvements and corrections 11.3.1 01/24/2024 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Added Feet Inch to Length measurement in Unit Converter
• General improvements and corrections 11.3 01/03/2024 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Updated for iOS/iPadOS 17.x
• Corrected crash when using AppIntents in Shortcuts
• Added App Intent for finding results on given date
• Added App Intent for finding results with some text
• General improvements and corrections 11.2.1 12/10/2023 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Updated for iOS/iPadOS 17
• Corrected crash in History when all items are deleted
• General improvements and corrections 11.2.0 11/21/2023 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Corrected problem with enable/disable of numeric pad buttons in programmer mode when base is changed
• General improvements and corrections 11.1.4 04/05/2023 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Corrected occasional crash when deleting history item from sidebar
• General improvements and corrections 11.1.3 01/24/2023 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• General improvements and corrections 11.1.2 01/11/2023 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Corrected problem that was preventing widget data from updating
• Corrected crash in iOS 14 related to introduction of widget
• General improvements and corrections 11.1.1 01/05/2023 Thank you for using our app. It's regularly improved and modernized to better serve you.
Recent changes include:
• Added Electric Vehicle Efficiency to Measurements
• General improvements and corrections 11.1.0 11/29/2022
Disclaimer
Official App Store Link
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