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Description

A MODERN GRAPHING CALCULATOR ON THE iPHONE
1. Fast, Interactive Touch-Screen Graphing
2. Everything is where you’d expect it to be
3. Scrollable Windows (no more spamming the up arrow keys)
4. Intelligent Error Messages
5. Convenient
6. IT’S FREE (for now).

WHY MAKE ANOTHER GRAPHING CALCULATOR APP?
1. We (the creators), once relied on graphing calculators, and after installing countless, similar apps, we couldn’t find anything useable. Hence, we made our own.


2. Before launching on the App Store, we personally worked with a limited, yet sizable, number of students to continuously improve the app.

WILL IT REMAIN FREE?
For those who use it now, it will always be free. However, eventually it will be monetized to ensure it’s sustainable for the developers.

Regardless, we get it, not everyone can just buy things whenever they want. Hence why, even after release, we’ll constantly be trying to find ways to make it available to everyone.

HOW TO SEND FEEDBACK
1. Press the red feedback button.

iOS Store Category:

Primary: Education

Secondary: Productivity

App Store

Privacy Policy

Total Ratings

500
5
370
4
50
3
24
2
15
1
42

Screenshots

Calculate84 screenshot 1Calculate84 screenshot 2Calculate84 screenshot 3Calculate84 screenshot 4

Version History

Launched Aug 14, 2019 (almost 1 year ago).

Releasing new versions every 14 days, on average.

Apr 06
2020
(Current)
Version 1.3.7

* iPad Support
* General Improvements

Apr 03
2020
Version 1.3.6

* Parametric Mode
* Different quartile method for stat functions (change from piecewise linear method to a more standard function)
* Intersection should be more accurate
* General Improvements

Mar 04
2020
Version 1.3.5

Improvements with derivative precision
Lists can now contain any type (ex. {4, 4i} is allowed)

Feb 07
2020
Version 1.3.4

* This + next few updates will be refinements.

Feb 06
2020
Version 1.3.3

* Added Matrix Editor
* General Improvements

Feb 05
2020
Version 1.3.2

* Added Matrix Editor
* General Improvements

Jan 30
2020
Version 1.3.1

* Complex Exponentiation
* General Improvements

Jan 29
2020
Version 1.3

This update mainly focuses on refining the current functions.

* Persistent Memory (ex. Mode Settings will be restored)
* Stats now has defaults
* Overall speed improvement (ex. Graphing is 200-300x faster)
* Answers no longer have .0 (ex. 3.0 is now 3)
* “Feedback” and “Issue” buttons can be toggled red or black in ‘Mode’
* Haptic Feedback can be toggled on or off in ‘Mode’
* Buttons are slightly larger
* Added temporary parens for trig functions
* New Sign In Page (also added ‘Sign in With Apple’ for devices on iOS 13)
* Added Intersect and Integral Graph Functions
* Rewrote the backend (will help for future updates)

Oct 20
2019
Version 1.2.2

- bug fixes

Oct 16
2019
Version 1.2.1

- bug fixes

Oct 15
2019
Version 1.2

Sorry for the delay, but the update is finally here!

- better support for small and big screens
- linear regression
- zoomStat
- use graph equations on home screen (ex. Y1(5))
- support for very very small numbers
- general ui improvements (ex. faster graphing)
- bug fixes

Updates in the future should be quicker.

Sep 20
2019
Version 1.1.4

- Layout Changes
- Support for iOS 13
- Bug Fixes

Sep 16
2019
Version 1.1.3

- Basics for Stat Plot
- Bug Fixes

Sep 14
2019
Version 1.1.2

Bug Fixes

Sep 04
2019
Version 1.1.1

Basic Complex Number Support
Basic Table Setup Support
Bug Fixes

Aug 29
2019
Version 1.1.0

Partial 'ZOOM' Support
Scientific Notation
More Functions Added
Bug Fixes

Aug 26
2019
Version 1.1

- Basic Matrix Arithmetic (access through "ALPHA" + "ZOOM")
- "FRAC" Column is added to "MATH"
- Features yet to come are more clearly defined

Aug 14
2019
Version 1.0

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