# iGraphmatica > Equation plotter for graphing functions, relations, and differential equations. (iPhone/iPad app by Keith Hertzer.) - Source: https://appshunter.io/ios/app/igraphmatica/id525600006 (this page in markdown: same URL + `.md`) - Developer: [Keith Hertzer](https://appshunter.io/developer/525600229) - Category: Education, Productivity - Price: $3.99 - Rating: 3.00/5 from 6 App Store ratings · 15 written reviews indexed - Age rating: 4+ - Requires: iOS 5.1.1 · 10 MB - Languages: American English, French (France), European Portuguese, European Spanish - Released: 2012-05-17 - Data updated: 2026-08-07 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/igraphmatica/id525600006/reviews.md ## What is iGraphmatica? Graphmatica is a powerful, easy-to-use, equation plotter with numerical and calculus features: - Graph Cartesian functions, relations, and inequalities, plus polar, parametric, and ordinary differential equations. - Data plotting and curve-fitting. - Up to 999 graphs on screen at once. - Numerically solve and graphically display tangent lines and integrals. - Find critical points, solutions to equations, and intersections between Cartesian functions. - AutoSquare keeps your graphs from getting squashed as you zoom or enable helper panes; or disable it in General Settings so you can scale each axis independently by pinching horizontally or vertically. - Print your graphs, copy to clipboard or export to Photo Album. - Share graph documents with friends or Graphmatica for Mac or Windows via email or iTunes. - Online help and demo files make getting up to speed a snap. In summary, a great tool for students and teachers of anything from high-school algebra through college calculus. ## Key features - Graph Cartesian, polar, parametric, and differential equations - Data plotting and curve-fitting - Up to 999 graphs on screen - Numerical solutions for tangents and integrals - Find critical points and intersections - Export graphs to various formats ## Recent user reviews (10 of 15) All indexed reviews: https://appshunter.io/ios/app/igraphmatica/id525600006/reviews.md ### 1/5 — I Really Enjoy Math *2023-03-24* My job involves lots of engineering math, but I also enjoy just playing around with graphs. My favorite math toy is now iGraphmatica on my iPad 1, as I can take it along with me for casual equation fun. Not only am I having a good time with it, but my coworkers enjoyed it when I showed it off at lunch. For my usage, the feature set is good and the price is great. UPDATE 3/23/2023 I’m now retired from engineering, and I went back to iGraphmatica on my iPad for some math fun, only to find that it no longer functions. I still have version 2.41, which was once functional, but now doesn’t respond. ### 5/5 — Professor Flint *2016-01-30* I have used Graphmatica on a PC for years to teach college level mathematics and statistics, and it is a great teaching tool! I am excited to be able to use it now on my IPad because my school is pushing this technology and I know this app is easy and effective for student use in all levels of Statistics and graphing all the way through Calculus. ### 5/5 — Everyone should have it. *2015-12-13* I have used it for years. If you only have one, this should be it. ### 5/5 — Great *2015-02-25, version 2.4.1* This app does everything I need for a high school Applied Math course. Great responsive developer as well. ### 1/5 — Fraude *2015-01-20* Acabo de bajar la aplicación y no abre ¿Que sucede? Observo los comentarios y la califican de excelente pero, no puedo acceder a la aplicación. ### 5/5 — Powerful app *2014-09-07* can do a lot if you know your math ### 4/5 — Très bonne application *2014-02-14, version 2.3.0* Application très sérieuse et pratique. Nous attendons d'autres mises à jour. ### 5/5 — Best app! *2014-02-11* This app has helped me so much as a year 10 math students so good!!!! ### 5/5 — IGraphmatica *2014-01-04* Fantastic app for students and teachers! ### 5/5 — Graphmatica *2013-12-22* Excellent app for graphing functions! ## Frequently asked questions about iGraphmatica ### What types of equations can iGraphmatica graph? iGraphmatica can graph Cartesian functions, relations, and inequalities, as well as polar, parametric, and ordinary differential equations. It also supports data plotting and curve-fitting. ### How many graphs can be displayed simultaneously in iGraphmatica? You can display up to 999 graphs on the screen at once with iGraphmatica, allowing for complex visualizations and comparisons. ### Does iGraphmatica offer numerical solutions? Yes, iGraphmatica can numerically solve and graphically display tangent lines and integrals. It can also find critical points, solutions to equations, and intersections between Cartesian functions. ### What are the export and sharing options for graphs in iGraphmatica? You can print your graphs, copy them to the clipboard, or export them to your Photo Album. Graph documents can also be shared with friends or other versions of Graphmatica via email or iTunes. ### Is iGraphmatica suitable for offline use? The description does not explicitly state whether iGraphmatica supports offline use. However, features like sharing via email or iTunes suggest some online functionality may be required for certain actions. ### What is the update frequency of iGraphmatica? The latest version, 2.4.1, was released on December 16, 2014. This indicates that updates may not be very frequent, with the last update being over 9 years ago. ### What devices does iGraphmatica support? iGraphmatica is supported on iPhone, iPad, and iPod devices. It is also available for Mac and Windows. ### Does iGraphmatica have ads? No, iGraphmatica does not contain advertisements. The app is a paid application with no in-app purchases or ads mentioned. ## Version history (last 5 releases) ### 2.4.1 — 2014-12-16 This update from Apple will improve the functionality of this app. No new features are included. Fix application hang when trying to display the equation error popup on iOS 7/8 in versions 2.3.6 and 2.4.0. ### 2.4.0 — 2014-12-09 1. Curves are now highlighted when you touch them or select their equation in the droplist. 2. Added Pick Line Style to the context menu for equations, allowing you to choose from solid, dashed, dotted, and dash-dot line styles. 3. Fixed size of Pick Graph Color popover on iOS8. ### 2.3.6 — 2014-11-11 1. Fixed bug causing Pick Graph Color dialog not to appear on iOS8. 2. Fixed a problem which could cause ODEs (and implicit Cartesian functions) to fail to register (and later disappear) rather than just stop drawing when the approximation hits an error. 3. Fixed graphs of x < 1/y and other inequalities with asymptotes that are functions of y, not x. 4. Graph any equation/inequality that is explicitly specified as x=f(y) as a function of y even if it can be solved for y instead. 5. Added Delete Graph and Clear Screen items to Tools menu, for ease of access (and to allow deleting slope-field graphs). 6. Changed highlight color used for crosshairs and selected domain region to be black rather than white when any high-luminance background color (not just pure white) is selected. 7. Fixed potential startup crash on iPod Touch running iOS 8. 8. Eliminated extra vertical asymptote drawn as part of y=acot x. 9. Fixed crash trying to load graph document with an equation that has an error. ### 2.3.5 — 2014-11-03 1. iOS8 compatibility fixes 2. Fixed bug which could cause graphs to be drawn slightly past the end of their specified domain. 3. Find All Graphs now adjusts the range based only on the requested domain of the equations (rather than the maximum possible values that would be visible on the screen with an unrestricted domain). 4. Fixed-increment Cartesian, polar, and parametric graphs (with a third parameter in their domain to specify the interval between graphed points) are now drawn as a series of dots rather than line segments. Point tables for these graphs display the set of the points graphed. 5. The parser will now accept functions that are run together with their parameter, e.g. y=sinx. 6. Added support for specifying powers of functions before the parameter e.g. y=sin^2x or y=cos²x ### 2.3.4 — 2014-05-19 - Fixed crash in cubert (∛x) function when x < 0. - Fixed issue with persisting a switch back to one of the standard color schemes from a custom scheme (for sure this time!). ## Apps similar to iGraphmatica | App | Rating | Price | Category | | --- | --- | --- | --- | | [C Compiler(Pro)](https://appshunter.io/ios/app/c-compilerpro/id1669071930) | 1.0 (2) | $2.99 | Education | | [Polynomial Regression](https://appshunter.io/ios/app/polynomial-regression/id6741364702) | — | Free | Education | | [Least Squares Curve Fit](https://appshunter.io/ios/app/least-squares-curve-fit/id6443509668) | 5.0 (2) | Free | Education | | [Linear Algebra Pro](https://appshunter.io/ios/app/linear-algebra-pro/id1669762569) | 5.0 (1) | $4.99 | Education | | [Math Solver Pro](https://appshunter.io/ios/app/math-solver-pro/id6467880393) | — | $4.99 | Education | | [3D Rotations and Quaternions](https://appshunter.io/ios/app/3d-rotations-and-quaternions/id6618113140) | — | Free | Education | --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-07.*