GraphMath8.10 - App Store

This graphing calculator is user friendly and powerful.
It is fully compatible with iOS 14 and 15, and mostly compatible with iOS 13 and Mac OS.

Cartesian 3D Z = F (X, Y) functions:
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Graphs can be:
1. Drawn as surface, lines, or dots.
2. Drawn with or without perspective, and with different light and reflection settings.
3. Tilted up or down.
4. Rotated to any position.
5. Drawing is animated by either X, Y, or Z.

Table of all points can be sorted by either X or Y.

Cylindrical 3D Z = F (Θ, R) functions:
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Graphs can be:
1. Drawn as surface, lines, or dots.
2. Drawn with or without perspective, and with different light and reflection settings.
3. Tilted up or down.
4. Rotated to any position.
5. Drawing is animated by Θ, R, or Z.

Table of all points can be sorted by either Θ or R.

Spherical 3D R = F (Θ, Φ) functions:
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Graphs can be:
1. Drawn as surface, lines, or dots.
2. Drawn with or without perspective, and with different light and reflection settings.
3. Tilted up or down.
4. Rotated to any position.
5. Drawing is animated by either Θ or Φ.

Table of all points can be sorted by Θ, Φ, or R.

Cartesian 2D Y = F (X) functions:
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Graph displays the following curves:
1. One or two Y = F (X) functions.
2. Derivative of the first function.
3. Integral of the first function as a shade and a curve.

Graph features:
1. Drawing is animated by X.
2. Clicking on the curves shows curve values, and finds closest point in the table.

Tables:
1. All function, integral, and derivative values.
2. Zero intersections of first function.
3. Intersections between first and second functions.

Polar 2D R = F (Θ) functions:
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Graph displays the following curves:
1. One or two R = F (Θ) functions.
2. Integral of the first function as a shade and a curve.

Graph features:
1. Drawing is animated by Θ.
2. Clicking on the curves shows curve values, and finds closest point in the table.

Tables:
1. Table of all function and integral values
2. Table of zero intersections of first function.
3. Table of intersections between first and second functions.

Parametric 2D X = F1 (T), Y = F2 (T) functions:
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Graph features:
1. Drawing is animated by T.
2. Clicking on the curves shows T, X, and Y values, and finds them in the table.

Table of all points.

F (X, Y) = 0 equations:
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Graph displays solutions as points.
Clicking on the points shows X, and Y values, and finds them in the table.

Table of all points.

Common features:
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1. List of previous entries.
2. List of preset entries.
3. Undo and redo buttons for formula entries.
4. Automatic correction of errors in function limits or steps are offered.
5. All function points can be saved to clipboard in a table format.
6. All function points can be displayed on corresponding graphs.
7. Control colors can be changed to black and white.
8. Link to Vectors and Planes 3D Geometry Guide App.
9. Link to Matrix Calculator Step by Step App.
Common features of all images:
1. Animation frames can be frozen and moved back or forward.
2. Animation speed can be adjusted.
3. Zoom.
4. Scroll.
5. Save to Clipboard.
6. Save to Photos
7. Color picker.

New functions and further UI improvements for our apps are coming!

Developers hope to get feedback at graphmath@aol.com.

Version History 1. Link to our new app, 'Math Editor': Notes from Algebra to Calculus.
2. Link to our new statistical app, 'Discrete Probability': Calculator, Proofs, Graphs.
3. Bug fix. 8.10 11/13/2025 1. Link to our new app 'Construct Polynomial: Interpolate & Approximate'.
2. Fixed an issue with e-mail not sending from 'About / Contact us' section. 8.9 04/08/2025 Link to our new app, 'Polynomial Solver\nStep by Step', which will replace 'Polynomials and\nLinear Systems'. 8.8 12/23/2024 Bug fixes and crash prevention. 8.7 10/16/2024 Bug fixes and crash prevention. 8.6 10/15/2024 1. Added a link to our new app: 'Calcu-Logarithm', all about logarithms, from Arithmetic to Calculus.
2. Bug fix and crash prevention. 8.5 09/25/2024 1. Links to our new apps in Other Math Apps: '3D Rotations & Quaternions' and 'Base to Base' (Number Converter).
2. UI improvements and bug fixes. 8.4 09/16/2024 Bug fix 8.3.1 04/07/2024 Added a link to our new app, "Drawing with Math" (Vector and Pixel Art), to "Our Linear Algebra Apps" section. 8.3 03/17/2024 1. New button with our Linear Algebra Apps, including links to 2 new ones: 'Polynomials and Linear Systems' and 'Least Squares Curve Fit'.
2. Bug fixes. 8.2 10/03/2022 New App Icon and other UI improvements 8.1 07/10/2022 1. Link to our new app, Matrix Solver Step by Step.
2. Minor UI improvements. 8.0 05/17/2022 Performance improvements 7.6 05/11/2022 Issues with 3D cylindrical and 3D cartesian graphs containing division by 0 have been fixed. 7.5.1 05/09/2022 1. Improved efficiency of calculations.
2. Improved algorithm of finding solutions of F (X, Y) = 0  equations.
3. Minor UI improvements. 7.5 05/08/2022 V.7.4.1: Bug fix

V.7.4: Dialog allowing to change horizontal and vertical light location, graph surface reflectivity, and fog level. 7.4.1 04/23/2022 1. Dialog allowing to change horizontal amd vertical light location, graph surface reflectivity, and fog level.
2. Improved efficiency of Spherical graph drawing. 7.4 04/22/2022 V7.3.1: Bug fix.

V7.3: Save to Photos option for all images. 
Option of black and white controls. 7.3.1 04/20/2022 1. Save to Photos option for all images.
2. Option of black and white controls.
3. Improved efficiency of cylindrical and spherical graph drawing.
4. Bug fixes. 7.3 04/15/2022 V.7.2.1: Bug fix

V.7.2: All 3D graphs can be rotated to any position. 7.2.1 04/14/2022 1. All 3D graphs can be rotated to any position.
2. Other UI improvements
3. Improved time of calculations.
4. Bug fixes. 7.2 04/11/2022 Bug fixes 7.1.4 04/08/2022 Bug fixes 7.1.3 04/06/2022 1. UI improvements.
2. Bug fixes. 7.1.2 04/04/2022 1. UI improvements.
2. Bug fixes. 7.1.1 04/03/2022