Calculate843.0.4
Publisher Description
Graphing made for iPhone
Calculate84 brings the graphing calculator experience to iPhone with a fast, touch-friendly design.
What you can do:
. Plot and explore graphs with smooth touch controls
. Find familiar calculator functions quickly
. Scroll naturally through equations and results
. Get clearer, more helpful error messages
. Send feedback directly from the app
Why we built Calculate84
We relied on graphing calculators ourselves and wanted an app that felt easier to use on a modern phone. Before launch, we worked with students to refine the experience, and we continue improving it based on user feedback.
Send feedback
Tap the red Feedback button in the app.
Terms of Use (EULA): https://calculate84.com/terms-of-use
Version History Improved equation history and result formatting, more reliable Pro purchases, better accessibility, and fixes for math input and stability. 3.0.4 Aug 31 Create and evaluate piecewise functions, explore clearer in-app function guides, and enjoy smoother equation editing with performance and stability improvements. 3.0.3 Aug 17 Improved graphing, equation editing, and table reliability, with additional performance and stability fixes across iPhone, iPad, and Mac. 3.0.2 Aug 11 Fixed an issue where the equation table could lose your place after switching apps.
This update brings a major 3.0 refresh to graphing, equation editing, function help, and everyday calculator workflows.
- New smoother graphing with better panning, zooming, tracing, labels, highlights, and inline graph previews
- Redesigned equation table that feels faster, scrolls more naturally, and keeps your recent work easier to follow
- Function help previews now show examples and argument details directly where you need them
- New support for implicit graphing, fixed-range graph inputs, clearer trace labels, coordinate labels, and stat plot previews
- Improved equation editing with better cursor movement, selection, copy/paste, matrix editing, and math formatting
- New interactive number and matrix adjustment controls for quicker editing and exploration
- Better layouts on iPad, Mac, and large screens, including keypad sizing, split controls, spacing, and keyboard handling
- Refreshed search with smoother animations, cleaner results, and improved accessibility behavior
- Clearer graph and equation rendering, especially for labels, large text, complex expressions, and formatted results
- Performance and reliability improvements across graphing, tables, equation solving, keypad resizing, and daily use 3.0.1 Aug 3 This update brings a major 3.0 refresh to graphing, equation editing, function help, and everyday calculator workflows.
- New smoother graphing with better panning, zooming, tracing, labels, highlights, and inline graph previews
- Function help previews now show examples and argument details directly where you need them
- New support for implicit graphing, fixed-range graph inputs, clearer trace labels, coordinate labels, and stat plot previews
- Improved equation editing with better cursor movement, selection, copy/paste, matrix editing, and math formatting
- New interactive number and matrix adjustment controls for quicker editing and exploration
- Better layouts on iPad, Mac, and large screens, including keypad sizing, split controls, spacing, and keyboard handling
- Refreshed search with smoother animations, cleaner results, and improved accessibility behavior
- Clearer graph and equation rendering, especially for labels, large text, complex expressions, and formatted results
- Performance and reliability improvements across graphing, tables, equation solving, keypad resizing, and daily use 3.0.0 Aug 1 - Added support for seeding random number results, including rand and randInt.
- Made graph windows and calculator state restore more reliably.
- Improved iPad and Mac window layout so the calculator fits better around system controls.
- Refined large-text and accessibility behavior across calculator screens.
- Fixed several edge cases in matrix, list, and math function handling.
- Added stability improvements throughout the app. 2.6.4 May 21 - Improved the iPhone keypad layout so it adapts more comfortably.
- Made saved graph windows reopen more reliably.
- Cleaned up integral labels and range formatting.
- Improved iPad and large-text layouts across tables, matrix editor, search, and graph setup.
- Refined accessibility and layout polish throughout the app.
- Simplified feedback confirmation messaging. 2.6.3 May 16 Just some general dusting and sweeping. 2.6.2 Mar 18 Bug fixes and performance improvements. 2.6.1 Jan 26 Bug fixes and performance improvements. 2.6.0 10/24/2025 Bug fixes and performance improvements 2.5.9 09/09/2025 Bug fixes and performance improvements. 2.5.7 08/23/2025 - Improved how graphing derivatives work
- Copy/paste graph values (ex. min, max)
- Inertial graphing
- Bug fixes and other performance improvements 2.2.5 04/08/2025 Bug fixes and performance improvements 2.2.4 12/20/2024 Bug fixes and performance improvements 2.2.3 11/01/2024 Bug fixes and performance improvements. 2.2.0 10/23/2024 Bug fixes and performance improvements. 2.1.9 10/22/2024 We've been on a bug witch hunt this last week.
If you notice any glitches or problems in general, please let us know via the red feedback button! We give higher priority to those with more messages. 2.1.8 10/17/2024 Bug fixes and performance improvements. 2.1.6 10/06/2024 Bug fixes and performance improvements. 2.1.5 10/03/2024 - new math display system 2.1.4 09/17/2024 Bug fixes and performance improvements. 2.1.3 09/09/2024 What’s Changed:
- Copy & Paste
- Reduced App Size 2.1.2 09/08/2024 Bug fixes and performance improvements. 2.1.1 08/21/2024 Bug fixes and performance improvements. 2.0.9 08/10/2024
About Calculate84
The company that develops Calculate84 is Century Light LLC. The latest version released by its developer is 3.0.4.
To install Calculate84 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 2026-10-15 and was downloaded 52 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 Calculate84 as malware if the download link is broken.
How to install Calculate84 on your iOS device:
- Click on the Continue To App button on our website. This will redirect you to the App Store.
- Once the Calculate84 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 Calculate84 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 3.0.4
posted on 2026-10-15
Version History Improved equation history and result formatting, more reliable Pro purchases, better accessibility, and fixes for math input and stability. 3.0.4 Aug 31 Create and evaluate piecewise functions, explore clearer in-app function guides, and enjoy smoother equation editing with performance and stability improvements. 3.0.3 Aug 17 Improved graphing, equation editing, and table reliability, with additional performance and stability fixes across iPhone, iPad, and Mac. 3.0.2 Aug 11 Fixed an issue where the equation table could lose your place after switching apps.
This update brings a major 3.0 refresh to graphing, equation editing, function help, and everyday calculator workflows.
- New smoother graphing with better panning, zooming, tracing, labels, highlights, and inline graph previews
- Redesigned equation table that feels faster, scrolls more naturally, and keeps your recent work easier to follow
- Function help previews now show examples and argument details directly where you need them
- New support for implicit graphing, fixed-range graph inputs, clearer trace labels, coordinate labels, and stat plot previews
- Improved equation editing with better cursor movement, selection, copy/paste, matrix editing, and math formatting
- New interactive number and matrix adjustment controls for quicker editing and exploration
- Better layouts on iPad, Mac, and large screens, including keypad sizing, split controls, spacing, and keyboard handling
- Refreshed search with smoother animations, cleaner results, and improved accessibility behavior
- Clearer graph and equation rendering, especially for labels, large text, complex expressions, and formatted results
- Performance and reliability improvements across graphing, tables, equation solving, keypad resizing, and daily use 3.0.1 Aug 3 This update brings a major 3.0 refresh to graphing, equation editing, function help, and everyday calculator workflows.
- New smoother graphing with better panning, zooming, tracing, labels, highlights, and inline graph previews
- Function help previews now show examples and argument details directly where you need them
- New support for implicit graphing, fixed-range graph inputs, clearer trace labels, coordinate labels, and stat plot previews
- Improved equation editing with better cursor movement, selection, copy/paste, matrix editing, and math formatting
- New interactive number and matrix adjustment controls for quicker editing and exploration
- Better layouts on iPad, Mac, and large screens, including keypad sizing, split controls, spacing, and keyboard handling
- Refreshed search with smoother animations, cleaner results, and improved accessibility behavior
- Clearer graph and equation rendering, especially for labels, large text, complex expressions, and formatted results
- Performance and reliability improvements across graphing, tables, equation solving, keypad resizing, and daily use 3.0.0 Aug 1 - Added support for seeding random number results, including rand and randInt.
- Made graph windows and calculator state restore more reliably.
- Improved iPad and Mac window layout so the calculator fits better around system controls.
- Refined large-text and accessibility behavior across calculator screens.
- Fixed several edge cases in matrix, list, and math function handling.
- Added stability improvements throughout the app. 2.6.4 May 21 - Improved the iPhone keypad layout so it adapts more comfortably.
- Made saved graph windows reopen more reliably.
- Cleaned up integral labels and range formatting.
- Improved iPad and large-text layouts across tables, matrix editor, search, and graph setup.
- Refined accessibility and layout polish throughout the app.
- Simplified feedback confirmation messaging. 2.6.3 May 16 Just some general dusting and sweeping. 2.6.2 Mar 18 Bug fixes and performance improvements. 2.6.1 Jan 26 Bug fixes and performance improvements. 2.6.0 10/24/2025 Bug fixes and performance improvements 2.5.9 09/09/2025 Bug fixes and performance improvements. 2.5.7 08/23/2025 - Improved how graphing derivatives work
- Copy/paste graph values (ex. min, max)
- Inertial graphing
- Bug fixes and other performance improvements 2.2.5 04/08/2025 Bug fixes and performance improvements 2.2.4 12/20/2024 Bug fixes and performance improvements 2.2.3 11/01/2024 Bug fixes and performance improvements. 2.2.0 10/23/2024 Bug fixes and performance improvements. 2.1.9 10/22/2024 We've been on a bug witch hunt this last week.
If you notice any glitches or problems in general, please let us know via the red feedback button! We give higher priority to those with more messages. 2.1.8 10/17/2024 Bug fixes and performance improvements. 2.1.6 10/06/2024 Bug fixes and performance improvements. 2.1.5 10/03/2024 - new math display system 2.1.4 09/17/2024 Bug fixes and performance improvements. 2.1.3 09/09/2024 What’s Changed:
- Copy & Paste
- Reduced App Size 2.1.2 09/08/2024 Bug fixes and performance improvements. 2.1.1 08/21/2024 Bug fixes and performance improvements. 2.0.9 08/10/2024
version 3.0.4
posted on 2026-09-03
Version History Improved equation history and result formatting, more reliable Pro purchases, better accessibility, and fixes for math input and stability. 3.0.4 3d ago Create and evaluate piecewise functions, explore clearer in-app function guides, and enjoy smoother equation editing with performance and stability improvements. 3.0.3 Aug 17 Improved graphing, equation editing, and table reliability, with additional performance and stability fixes across iPhone, iPad, and Mac. 3.0.2 Aug 11 Fixed an issue where the equation table could lose your place after switching apps.
This update brings a major 3.0 refresh to graphing, equation editing, function help, and everyday calculator workflows.
- New smoother graphing with better panning, zooming, tracing, labels, highlights, and inline graph previews
- Redesigned equation table that feels faster, scrolls more naturally, and keeps your recent work easier to follow
- Function help previews now show examples and argument details directly where you need them
- New support for implicit graphing, fixed-range graph inputs, clearer trace labels, coordinate labels, and stat plot previews
- Improved equation editing with better cursor movement, selection, copy/paste, matrix editing, and math formatting
- New interactive number and matrix adjustment controls for quicker editing and exploration
- Better layouts on iPad, Mac, and large screens, including keypad sizing, split controls, spacing, and keyboard handling
- Refreshed search with smoother animations, cleaner results, and improved accessibility behavior
- Clearer graph and equation rendering, especially for labels, large text, complex expressions, and formatted results
- Performance and reliability improvements across graphing, tables, equation solving, keypad resizing, and daily use 3.0.1 Aug 3 This update brings a major 3.0 refresh to graphing, equation editing, function help, and everyday calculator workflows.
- New smoother graphing with better panning, zooming, tracing, labels, highlights, and inline graph previews
- Function help previews now show examples and argument details directly where you need them
- New support for implicit graphing, fixed-range graph inputs, clearer trace labels, coordinate labels, and stat plot previews
- Improved equation editing with better cursor movement, selection, copy/paste, matrix editing, and math formatting
- New interactive number and matrix adjustment controls for quicker editing and exploration
- Better layouts on iPad, Mac, and large screens, including keypad sizing, split controls, spacing, and keyboard handling
- Refreshed search with smoother animations, cleaner results, and improved accessibility behavior
- Clearer graph and equation rendering, especially for labels, large text, complex expressions, and formatted results
- Performance and reliability improvements across graphing, tables, equation solving, keypad resizing, and daily use 3.0.0 Aug 1 - Added support for seeding random number results, including rand and randInt.
- Made graph windows and calculator state restore more reliably.
- Improved iPad and Mac window layout so the calculator fits better around system controls.
- Refined large-text and accessibility behavior across calculator screens.
- Fixed several edge cases in matrix, list, and math function handling.
- Added stability improvements throughout the app. 2.6.4 May 21 - Improved the iPhone keypad layout so it adapts more comfortably.
- Made saved graph windows reopen more reliably.
- Cleaned up integral labels and range formatting.
- Improved iPad and large-text layouts across tables, matrix editor, search, and graph setup.
- Refined accessibility and layout polish throughout the app.
- Simplified feedback confirmation messaging. 2.6.3 May 16 Just some general dusting and sweeping. 2.6.2 Mar 18 Bug fixes and performance improvements. 2.6.1 Jan 26 Bug fixes and performance improvements. 2.6.0 10/24/2025 Bug fixes and performance improvements 2.5.9 09/09/2025 Bug fixes and performance improvements. 2.5.7 08/23/2025 - Improved how graphing derivatives work
- Copy/paste graph values (ex. min, max)
- Inertial graphing
- Bug fixes and other performance improvements 2.2.5 04/08/2025 Bug fixes and performance improvements 2.2.4 12/20/2024 Bug fixes and performance improvements 2.2.3 11/01/2024 Bug fixes and performance improvements. 2.2.0 10/23/2024 Bug fixes and performance improvements. 2.1.9 10/22/2024 We've been on a bug witch hunt this last week.
If you notice any glitches or problems in general, please let us know via the red feedback button! We give higher priority to those with more messages. 2.1.8 10/17/2024 Bug fixes and performance improvements. 2.1.6 10/06/2024 Bug fixes and performance improvements. 2.1.5 10/03/2024 - new math display system 2.1.4 09/17/2024 Bug fixes and performance improvements. 2.1.3 09/09/2024 What’s Changed:
- Copy & Paste
- Reduced App Size 2.1.2 09/08/2024 Bug fixes and performance improvements. 2.1.1 08/21/2024 Bug fixes and performance improvements. 2.0.9 08/10/2024
version 3.0.3
posted on 2026-08-21
Version History Create and evaluate piecewise functions, explore clearer in-app function guides, and enjoy smoother equation editing with performance and stability improvements. 3.0.3 4d ago Improved graphing, equation editing, and table reliability, with additional performance and stability fixes across iPhone, iPad, and Mac. 3.0.2 Aug 11 Fixed an issue where the equation table could lose your place after switching apps.
This update brings a major 3.0 refresh to graphing, equation editing, function help, and everyday calculator workflows.
- New smoother graphing with better panning, zooming, tracing, labels, highlights, and inline graph previews
- Redesigned equation table that feels faster, scrolls more naturally, and keeps your recent work easier to follow
- Function help previews now show examples and argument details directly where you need them
- New support for implicit graphing, fixed-range graph inputs, clearer trace labels, coordinate labels, and stat plot previews
- Improved equation editing with better cursor movement, selection, copy/paste, matrix editing, and math formatting
- New interactive number and matrix adjustment controls for quicker editing and exploration
- Better layouts on iPad, Mac, and large screens, including keypad sizing, split controls, spacing, and keyboard handling
- Refreshed search with smoother animations, cleaner results, and improved accessibility behavior
- Clearer graph and equation rendering, especially for labels, large text, complex expressions, and formatted results
- Performance and reliability improvements across graphing, tables, equation solving, keypad resizing, and daily use 3.0.1 Aug 3 This update brings a major 3.0 refresh to graphing, equation editing, function help, and everyday calculator workflows.
- New smoother graphing with better panning, zooming, tracing, labels, highlights, and inline graph previews
- Function help previews now show examples and argument details directly where you need them
- New support for implicit graphing, fixed-range graph inputs, clearer trace labels, coordinate labels, and stat plot previews
- Improved equation editing with better cursor movement, selection, copy/paste, matrix editing, and math formatting
- New interactive number and matrix adjustment controls for quicker editing and exploration
- Better layouts on iPad, Mac, and large screens, including keypad sizing, split controls, spacing, and keyboard handling
- Refreshed search with smoother animations, cleaner results, and improved accessibility behavior
- Clearer graph and equation rendering, especially for labels, large text, complex expressions, and formatted results
- Performance and reliability improvements across graphing, tables, equation solving, keypad resizing, and daily use 3.0.0 Aug 1 - Added support for seeding random number results, including rand and randInt.
- Made graph windows and calculator state restore more reliably.
- Improved iPad and Mac window layout so the calculator fits better around system controls.
- Refined large-text and accessibility behavior across calculator screens.
- Fixed several edge cases in matrix, list, and math function handling.
- Added stability improvements throughout the app. 2.6.4 May 21 - Improved the iPhone keypad layout so it adapts more comfortably.
- Made saved graph windows reopen more reliably.
- Cleaned up integral labels and range formatting.
- Improved iPad and large-text layouts across tables, matrix editor, search, and graph setup.
- Refined accessibility and layout polish throughout the app.
- Simplified feedback confirmation messaging. 2.6.3 May 16 Just some general dusting and sweeping. 2.6.2 Mar 18 Bug fixes and performance improvements. 2.6.1 Jan 26 Bug fixes and performance improvements. 2.6.0 10/24/2025 Bug fixes and performance improvements 2.5.9 09/09/2025 Bug fixes and performance improvements. 2.5.7 08/23/2025 - Improved how graphing derivatives work
- Copy/paste graph values (ex. min, max)
- Inertial graphing
- Bug fixes and other performance improvements 2.2.5 04/08/2025 Bug fixes and performance improvements 2.2.4 12/20/2024 Bug fixes and performance improvements 2.2.3 11/01/2024 Bug fixes and performance improvements. 2.2.0 10/23/2024 Bug fixes and performance improvements. 2.1.9 10/22/2024 We've been on a bug witch hunt this last week.
If you notice any glitches or problems in general, please let us know via the red feedback button! We give higher priority to those with more messages. 2.1.8 10/17/2024 Bug fixes and performance improvements. 2.1.6 10/06/2024 Bug fixes and performance improvements. 2.1.5 10/03/2024 - new math display system 2.1.4 09/17/2024 Bug fixes and performance improvements. 2.1.3 09/09/2024 What’s Changed:
- Copy & Paste
- Reduced App Size 2.1.2 09/08/2024 Bug fixes and performance improvements. 2.1.1 08/21/2024 Bug fixes and performance improvements. 2.0.9 08/10/2024 What's Changed:
- Graph table can now scroll infinitely in both directions
- Reduced app size 2.0.8 08/05/2024
version 2.6.4
posted on 2026-07-24
Version History - Added support for seeding random number results, including rand and randInt.
- Made graph windows and calculator state restore more reliably.
- Improved iPad and Mac window layout so the calculator fits better around system controls.
- Refined large-text and accessibility behavior across calculator screens.
- Fixed several edge cases in matrix, list, and math function handling.
- Added stability improvements throughout the app. 2.6.4 May 21 - Improved the iPhone keypad layout so it adapts more comfortably.
- Made saved graph windows reopen more reliably.
- Cleaned up integral labels and range formatting.
- Improved iPad and large-text layouts across tables, matrix editor, search, and graph setup.
- Refined accessibility and layout polish throughout the app.
- Simplified feedback confirmation messaging. 2.6.3 May 16 Just some general dusting and sweeping. 2.6.2 Mar 18 Bug fixes and performance improvements. 2.6.1 Jan 26 Bug fixes and performance improvements. 2.6.0 10/24/2025 Bug fixes and performance improvements 2.5.9 09/09/2025 Bug fixes and performance improvements. 2.5.7 08/23/2025 - Improved how graphing derivatives work
- Copy/paste graph values (ex. min, max)
- Inertial graphing
- Bug fixes and other performance improvements 2.2.5 04/08/2025 Bug fixes and performance improvements 2.2.4 12/20/2024 Bug fixes and performance improvements 2.2.3 11/01/2024 Bug fixes and performance improvements. 2.2.0 10/23/2024 Bug fixes and performance improvements. 2.1.9 10/22/2024 We've been on a bug witch hunt this last week.
If you notice any glitches or problems in general, please let us know via the red feedback button! We give higher priority to those with more messages. 2.1.8 10/17/2024 Bug fixes and performance improvements. 2.1.6 10/06/2024 Bug fixes and performance improvements. 2.1.5 10/03/2024 - new math display system 2.1.4 09/17/2024 Bug fixes and performance improvements. 2.1.3 09/09/2024 What’s Changed:
- Copy & Paste
- Reduced App Size 2.1.2 09/08/2024 Bug fixes and performance improvements. 2.1.1 08/21/2024 Bug fixes and performance improvements. 2.0.9 08/10/2024 What's Changed:
- Graph table can now scroll infinitely in both directions
- Reduced app size 2.0.8 08/05/2024 Bug fixes and performance improvements. 2.0.6 07/07/2024 Bug fixes and performance improvements. 2.0.5 06/04/2024 Bug fixes and performance improvements. 2.0.4 05/27/2024 Bug fixes and performance improvements. 2.0.3 05/25/2024
version 2.6.2
posted on 2026-03-18
Just some general dusting and sweeping.
version 2.6.1
posted on 2026-01-26
Bug fixes and performance improvements.
version 2.5.9
posted on 2025-09-24
Sep 24, 2025
Version 2.5.9
Bug fixes and performance improvements
version 2.1.3
posted on 2024-09-09
Sep 9, 2024
Version 2.1.3
What’s Changed:
- Copy & Paste
- Reduced App Size
version 2.1.1
posted on 2024-08-21
Aug 21, 2024
Version 2.1.1
What's Changed:
- Inline graphing support
- TVM Solver (pro)
- Equation Solver (pro)
- Pinch to zoom out of graphs (pro)
- Many other smaller ui/ux changes
version 1.9.9
posted on 2024-04-25
Apr 25, 2024
Version 1.9.9
Bug fixes and performance improvements.
