# Good Grapher - scientific graphing calculator > Advanced scientific and graphing calculator with equation solving capabilities. (iPhone/iPad app by Iurii Mozharovskyi.) - Source: https://appshunter.io/ios/app/good-grapher-scientific-graphing-calculator/id416996329 (this page in markdown: same URL + `.md`) - Developer: [Iurii Mozharovskyi](https://appshunter.io/developer/411678880) - Category: Education, Productivity - Price: Free - Rating: 4.60/5 from 122 App Store ratings · 126 written reviews indexed - Age rating: 4+ - Requires: iOS 7.0 · 10 MB - Languages: American English - Released: 2011-02-20 - Data updated: 2026-08-15 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/good-grapher-scientific-graphing-calculator/id416996329/reviews.md ## What is Good Grapher? Good Grapher™ - great and very powerful scientific graphing calculator. It will become your reliable assistant from elementary school to university and work. Customer reviews: "Amazing app! I love it. It has Many great features that beat my T83" "Best calculator. It's my favorite app now ) Functionality and usability is on top level." SCIENTIFIC CALCULATOR: - History tape - real and complex numbers - radians and degrees angle modes, support for minutes, seconds, grads - constants: astronomical, atomic, electromagnetic, mathematical, physicochemical, universal - functions: sin, cos, tan, cot, sec, csc, sinh, cosh, tanh, coth, asin, acos, asec, acsc, atan, acot, asinh, acosh, atanh, acoth, log2, log10, ln, logn(n,x) (log x with base n), √, ³√, abs, avg, ceil, floor, round, deg2rad, rad2deg, max, min, sgn, lcm, gcd, nCr, nPr, arg, real, imag, conj, polar - operators: +, -, *, /, % (modulus), ^, ! (factorial), ' (minutes), " (seconds), {grad} - ← - assignment operator and A, B,…,J variables for values storage - copy/email calculations 2D GRAPHING CALCULATOR: - carefully-designed graph visualization with multi-touch support (pinch to zoom and drag to scroll) - cartesian y(x) and x(y), polar r(θ) graphs (parametric x(t)y(t) and implicit in Pro version) - inequalities drawing (in Pro version) - function tracing and automatic min/max, zeros, intersections scanning for all function types - intersection discovering between different function types, e.g. between cartesian y=x and polar r=1 - unlimited number of functions can be drawn simultaneously - standard, trigonometric and logarithmic axes - proportional and non-proportional scaling - customizable graph colors - table of graph values - copy, save, email screenshot 3D GRAPHING CALCULATOR: - pinch to zoom and drag to rotate - cartesian x(y,z), y(x,z), z(x,y), cylindrical x(p,φ), y(p,φ), z(p,φ), spherical r(θ,φ) graphs (parametric xyz(u,v) and implicit in Pro version) - inequalities drawing (in Pro version) - points, lines, surface drawing modes - configurable graph bounds - copy, save, email screenshot MATH SOLVER: - polynomial solver: 2x - 3 = 0 (linear) 3x² + 4x + 8 = 0 (quadratic) 5x³ + 2x² - 4x + 2 = 0 (cubic) 7x⁴ - 2x³ + 3x² + 2x - 1 = 0 (quartic) - system of linear equations solver with 2 unknown 2x - 9 = 9 3x + 4y = -13 with 3 unknown -5x + 4y + 2z = -4 7x + 2y + 3z = 19 3x + 5y - 1z = 10 MAC APP STORE Good Grapher is also available on the Mac App Store. See www.goodgrapher.com Visit www.goodgrapher.com for more screenshots, demo videos, details and news. Feel free to contact us for any questions and suggestions. ## Key features - Scientific calculator with history - 2D and 3D graphing - Polynomial and linear equation solver - Real and complex number support - Multiple angle modes - Graph tracing and scanning ## What do users think of Good Grapher? Overall sentiment: positive **Pros** - 👍 Excellent user interface and intuitive design - 📊 Powerful 2D and 3D graphing capabilities - 🚀 Fast performance and quick load times - 💰 Free app with premium features - 🔄 Easy equation history and recall functionality - 📱 Lightweight and doesn't require much storage - 🧮 Comprehensive scientific calculator functions - 🎓 TI-84/TI-89 equivalent replacement for students - ✨ No ads in free version (or minimal ads) - 🔍 Easy zoom and graph scaling features - 📈 Shows equation as you type - 🎯 Displays points of intersection on graphs **Cons** - ⚠️ Occasional calculation errors - 🐛 App crashes and stability issues - 📱 Not optimized for newer iPhone models - 🔐 Unnecessary location services permission request - ❌ Limited variable support (x variable issues) - ⚙️ Some buttons not intuitive - 🔧 Inconsistent handling of negative numbers - 📊 Graph deletion sometimes fails - 🎨 Display resolution outdated (iPhone 5 era) - ⏱️ Slow startup time in some cases - 🚫 Cannot be used during exams **Commonly reported bugs** - App crashes when deleting graphs - Incorrect cosine calculations - Unclosed parentheses handling issues - Negative number input not working in certain positions - Graph union display limited to 2 unions - Location services popup appears repeatedly - Music cuts out when app opens - Popup interruptions during entry in free version **Most requested features** - System of equations solver - Variable support (especially x variable) - Domain and points of discontinuity features - Spreadsheet-like table graphing capability - iPad optimization and compatibility - Improved negative number handling (e.g., 1*-1) - Number formatting with commas (1,000 instead of 1000) - Union display for multiple graph functions - Paid premium version option - More function options and advanced features ## Recent user reviews (10 of 126) All indexed reviews: https://appshunter.io/ios/app/good-grapher-scientific-graphing-calculator/id416996329/reviews.md ### 5/5 — Excellent Calculator *2023-08-26, version 3.3.3* Great for single calculations and “chain” calculations. ### 5/5 — This is the best free graphing calculator in the app store *2020-10-29, version 3.3.3* Im surprised theres only a few people using this!! It literally has a 3d grapher and theres so many other features that makes this app extra helpful for a calculator! ### 5/5 — Good little pocket calculator *2020-10-05* As an engineering student this app always comes in handy whenever I don’t have my trusty Ti-84 on me, and it’s the closest equivalent I have found on the App Store so far. Once you get used to the layout it is a powerful app and I’m glad I have it. ### 4/5 — 좋은 ‘아플’ *2020-07-04* 정말 좋은 ‘어플’로 초기부터 사용했고, 많은 도움도 받았고, 유용하게 잘 써왔읍다. 고마워요...... ### 5/5 — Perfect Calculator *2020-05-30* This is exactly the perfect calculator for iPhone. In terms of the calculator, it actually shows your the equation as you type it, shows your old equations, and you can pull down equations or values into your current equation. If you’re a mathematician or an engineer and need a real calculator, this is about as good as it gets. 2 wishes: - an option to solve system of equations (complex, but that’s still why I reach for my TI-nSpire CAS usually, before this) - optimize for iPhone X ... this app is still running at the iPhone 5 resolution... it’s worrying me that this app is dying off, and all we need is Apple to do what it does best and cut support for some sort of API that this thing uses or something like that. ### 5/5 — 손안의 공학계산기 *2020-05-27* 언제부턴가 계산기를 별도로 찾은 기억이 없다! 아주 편리하게 사용하고 있어요. ### 5/5 — It is pretty good. *2020-05-17* Very easy to use ### 5/5 — The best calculator for me *2019-07-13* This app is so useful, lightweight and simple to use! ### 5/5 — BEST COMPANION *2019-01-24, version 3.3.3* Can’t ask for more. It’s the best Math practice companion! ### 5/5 — 잘 사용하고 았습니다 *2018-11-19* 모바일 주계산기로 사용중입니다. ## Frequently asked questions about Good Grapher ### What does the Good Grapher app do? Good Grapher is a powerful scientific and graphing calculator designed to be a reliable assistant for users from elementary school through university and professional work. It offers a wide range of scientific functions, advanced 2D and 3D graphing capabilities, and a math solver for various equations. ### What are the key features of this calculator app? Key features include a comprehensive scientific calculator with history, support for real and complex numbers, multiple angle modes, and numerous mathematical functions. It also provides advanced 2D and 3D graphing with multi-touch support, function tracing, and equation solving for polynomials and systems of linear equations. ### Is this app free to use? Yes, the Good Grapher app is available for free. There are no in-app purchases or advertisements mentioned in the provided description, indicating a completely free experience for users. ### What kind of math problems can this app solve? This app can solve a variety of math problems. It includes a scientific calculator for complex calculations, a 2D and 3D graphing calculator for visualizing functions, and a dedicated math solver for polynomial equations (linear, quadratic, cubic, quartic) and systems of linear equations with up to three unknowns. ### Is this app available on other platforms? Yes, Good Grapher is also available on the Mac App Store. More information, including screenshots and demo videos, can be found on their official website, www.goodgrapher.com. ## Version history (last 5 releases) ### 3.3.3 — 2016-01-04 This app has been updated by Apple to display the Apple Watch app icon. - minor buf fixes ### 3.3.2 — 2015-11-03 - fixed iPad iOS 9 keyboard bug ### 3.3.1 — 2015-10-29 - fixed 3D graph displaying in iPhone 6s and iPhone 6s plus - minor bug fixes ### 3.3.0 — 2014-11-06 - iOS 8 support - minor UI changes - bug fixes ### 3.2.5 — 2014-05-12 - fixed crashing on 2D table - minor improvements ## Apps similar to Good Grapher | App | Rating | Price | Category | | --- | --- | --- | --- | | [Desmos Graphing Calculator](https://appshunter.io/ios/app/desmos-graphing-calculator/id653517540) | 4.3 (1,271) | Free | Education | | [Symbolab - AI Math Solver App](https://appshunter.io/ios/app/symbolab-ai-math-solver-app/id876942533) | 4.6 (26,120) | Free | Education | | [Photomath](https://appshunter.io/ios/app/photomath/id919087726) | 4.8 (732,920) | Free | Education | | [MathPapa - Algebra Calculator](https://appshunter.io/ios/app/mathpapa-algebra-calculator/id1024251561) | 4.7 (17,045) | Free | Education | | [Scientific Calculator Plus 991](https://appshunter.io/ios/app/scientific-calculator-plus-991/id1449106995) | 4.7 (12,288) | Free | Education | | [Taculator 84 Graphing Calc](https://appshunter.io/ios/app/taculator-84-graphing-calc/id1457737367) | 4.5 (7,528) | Free | Education | ## More apps by Iurii Mozharovskyi - [Good Grapher Pro - scientific graphing calculator](https://appshunter.io/ios/app/good-grapher-pro-scientific-graphing-calculator/id411678877) - [Ping - network utility](https://appshunter.io/ios/app/ping-network-utility/id576773404) - [SMS Filter](https://appshunter.io/ios/app/sms-filter/id1271159042) All apps by Iurii Mozharovskyi: https://appshunter.io/developer/411678880 ## Related topics [csisections](https://appshunter.io/ios/topics/csisections) · [rbcx calculation tool](https://appshunter.io/ios/topics/rbcx-calculation-tool) · [mathgra math grapher](https://appshunter.io/ios/topics/mathgra-math-grapher) · [eindeks](https://appshunter.io/ios/topics/eindeks) · [graphing calculator math](https://appshunter.io/ios/topics/graphing-calculator-math) --- *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 2026-08-15.*