# PocketCAS: Graphing Calculator — Graphs, derivatives, 3D plots > Advanced mathematics application for calculus, algebra, and graphing. (iPhone/iPad app by Timing Software GmbH.) - Source: https://appshunter.io/ios/app/pocketcas-graphing-calculator/id517249689 (this page in markdown: same URL + `.md`) - Developer: [Timing Software GmbH](https://appshunter.io/developer/333261118) - Category: Education, Utilities - Price: Free - Rating: 4.60/5 from 204 App Store ratings · 152 written reviews indexed - Age rating: 4+ - Requires: iOS 18.0 · 42 MB - Languages: American English, French (France), German (Germany) - Released: 2012-04-26 - Data updated: 2026-10-19 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/pocketcas-graphing-calculator/id517249689/reviews.md ## What is PocketCAS? PocketCAS is a graphing calculator for iPhone and iPad. It graphs your functions, finds derivatives and works with exact fractions and roots. Everything runs on your device, so it works without internet or an account. An in-app purchase unlocks PocketCAS Pro, with steps, integrals and the solver. Graphs - 2D plots of functions, implicit equations, polar and parametric curves and vector fields, two functions per plot. PocketCAS marks zeros, extrema and intersections. In full screen, tap a mark to read its coordinates. - 3D surfaces with soft light and shading. Drag to turn them, pinch to zoom. Derivatives - Under each function, a suggestion shows its derivative, already worked out, and a small plot sits beside the result. Tap one to add it to your document. - Exact derivatives of products, quotients, roots and chains, written the way your textbook writes them. Exact results - Arithmetic with exact fractions and roots, trigonometric, exponential and logarithmic functions. - Matrices: determinants, inverses and products. - Your own functions, with conditions and recursion. - Common units and physical constants. Reads like your textbook - Results look the way they do in a textbook: fractions, roots, powers and matrices. - A math keyboard with every function in reach, and a hint shows what goes between the brackets. Made for daily work - Documents keep your calculations and plots together, and iCloud syncs them between your devices. - Export and print plots, entries or whole documents (with a watermark). - Help built in: the function reference explains every function with examples, and tutorials get you started. Unlock PocketCAS Pro One purchase in the app unlocks everything in PocketCAS Pro, without a subscription: calculation steps that name the rule behind each step, integrals, limits, series and sums, equation and system solving, factoring and simplifying, eigenvalues, differential equations, scripts, plots with more than two functions, imports of documents and CSV data, larger matrices in the editor, exports without a watermark, and suggestions with zeros, extrema and integrals. Family Sharing is included, and Restore Purchases is in the main menu. Until you unlock it, the function reference marks the functions of Pro with a PRO badge. PocketCAS Pro is also sold as its own app; you need only one. Questions or ideas? Write to us at https://pocketcas.com/support. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://pocketcas.com/privacy.php ## Key features - 2D and 3D plotting - Calculus functions (limits, derivatives) - Linear algebra operations - Equation solving - Scripting language - Physical units and constants - iCloud sync ## What do users think of PocketCAS? Reviews of PocketCAS are mostly positive: the Education app is rated 4.6/5 from 204 App Store ratings. What users like most: intuitive and user-friendly interface, excellent graphing capabilities with 3D visualization. Top complaints: recent updates cause crashes on older documents, expensive compared to free alternatives. Summarized from real user reviews. **Pros** - 👍 Intuitive and user-friendly interface - 📊 Excellent graphing capabilities with 3D visualization - 💰 Free version available with substantial features - 🧮 Powerful mathematical computation engine - 📱 Convenient mobile alternative to expensive calculators - ✏️ Paper-like workspace for calculations - ⚡ Fast and responsive performance - 🎓 Great for students and educational use - 🔧 Comprehensive function library including trigonometry - 🎨 Attractive and well-designed UI **Cons** - 🐛 Recent updates cause crashes on older documents - 💸 Expensive compared to free alternatives - 🔒 Limited free version functionality - 🎮 Clunky interface in some areas - ❌ Cannot plot certain advanced functions - 🌍 Pro version unavailable in some regions - 📖 Poor documentation and user manual - 🔄 Compatibility issues with iOS updates - 🎯 Steep learning curve for complex features **Commonly reported bugs** - App crashes when loading previously saved documents - Crashes with no error feedback or debugging information - Cannot plot certain mathematical functions - Zoom scaling issues with 3D graphs (scales Z-axis incorrectly) - Compatibility broken with iOS 6 after iOS 7 update - Function plotting limitations for advanced equations **Most requested features** - Dark theme/dark mode for UI - Multiple polynomials on single graph - Inverse button functionality - Better zoom functionality for 3D graphs - Improved documentation and tutorials - More Greek characters support - Measurement conversion capabilities - Better control layout and cleanup ## Is PocketCAS safe? PocketCAS: Graphing Calculator appears safe based on user ratings. The AppsHunter Safety Score for PocketCAS is 90 out of 100. This assessment is based on 204 user ratings, with an App Store average of 4.6 out of 5. Of 204 App Store ratings, 91.7% point to a safe experience, 4.9% suggest some concerns, and 3.4% point to a risky experience. ## Is PocketCAS legit? PocketCAS: Graphing Calculator appears to be a legitimate app. The AppsHunter Legitimacy Score for PocketCAS is 88 out of 100 points across 7 verification signals from App Store and developer data. ## Recent user reviews (10 of 152) All indexed reviews: https://appshunter.io/ios/app/pocketcas-graphing-calculator/id517249689/reviews.md ### 5/5 — great app *2026-01-09* Love its graphics, evaluation is fast enough for me and overall , it is very handy during calculus study. ### 5/5 — 如何写分段函数 *2021-08-27* 如何写分段函数 ### 5/5 — Geile Funktionen *2021-08-09* Wenn man so wie ich keinen Plan hat, wie das Ding (Die Funktion) verläuft, dann ist, dies schon sehr geil dargestellt! Funktion der App super gut ! Deshalb 5/5 ### 4/5 — Jetzt ok! *2021-02-04* Nach Info durch den Hersteller nun mehr Klarheit. Leider sind manche Fehlermeldungen wenig aussagekräftig, aber die App scheint ziemlich gut zu sein. Man muss sich wohl nur in die Bedienung hineinfinden. **Developer response:** Rechts oben auf dem Bildschirm befindet sich eine Taste namens "Berechnen". Bitte drücken Sie diese Taste, wenn Sie etwas berechnen wollen. ### 3/5 — A trouble *2020-12-19* Why can not I use the “∑”？ ### 5/5 — 语言问题 *2020-12-18* 可以有中文版吗 ### 5/5 — 建议开发者做个中文版 *2020-12-16* 建议开发者做个中文版 ### 5/5 — Die App ist super! *2020-09-20* Für alle die nur einen Graphen darstellen wollen oder etwas zu berechnen haben, ist die App vollkommen ausreichend, besonders auch weil sie kostenlos ist. ### 5/5 — Good! *2020-03-07* Who can tell me the function formula of the last page? Thx! ### 5/5 — looking for help ! *2020-02-28* I’m a green hand,I don’t know how to plot parametric equations. I hope you can help me ,please. **Developer response:** Hello! Could you please reach out via https://pocketcas.com/contact, so we can help you? Thanks! ## Frequently asked questions about PocketCAS ### What does PocketCAS lite do? PocketCAS lite is a free version of an advanced mathematics application designed to help users with a variety of math problems. It can assist with calculations ranging from elementary math to calculus, algebra, and statistics. It also offers graphing capabilities and can be used as a replacement for traditional graphing calculators. ### What are the key features of PocketCAS lite? PocketCAS lite allows for 2D and 3D plotting, basic calculus operations like limits and derivatives, linear algebra functions, and equation solving. It also includes a scripting language, support for physical units, and iCloud synchronization for documents. ### Is PocketCAS lite free to use? Yes, PocketCAS lite is a free version of the application. It allows users to try out the interface and many features before purchasing the full PocketCAS pro version. However, some advanced functions are unavailable in the lite version. ### What are the limitations of the lite version? The lite version has limitations such as unavailable advanced mathematical functions like integration and eigenvalue calculations, plotting only two functions at a time, and watermarked exported graphics. The full functionality is available in PocketCAS pro. ### Who would benefit from using PocketCAS lite? PocketCAS lite is beneficial for students of all levels, teachers, and engineers who need a robust tool for solving mathematical problems, checking homework, and performing complex calculations. It's particularly useful for those studying calculus and algebra. ## Version history (last 5 releases) ### 2026.2 — 2026-10-15 You can now unlock PocketCAS Pro right in this app. This update also explains results without a value, makes large numbers easier to read and fixes a number of smaller things. New in version 2026.2: - Unlock PocketCAS Pro in the app with a one-time purchase, without a subscription. It adds calculation steps, integrals, the equation solver, hundreds more functions, and bigger plots and matrices. Family Sharing is included, and Restore Purchases is in the main menu. - Under a result you now see every suggestion. Some come with PocketCAS Pro, and a tap on one shows how to unlock it. The same goes for a Pro function that you type. - When a result has no value, PocketCAS now says why, such as Undefined or Not invertible, often with a short reason below. A typing error is marked in the input, and a suggestion offers the fix: sin x becomes sin(x). A stopped calculation shows how long it ran and offers Calculate Again. - Next to an exact result, the ≈ line now also shows the decimal value of a result with units. Very large and very small numbers read as 2.43 × 10¹⁸ instead of 2.43E+18, and when rounding changed a decimal result, the suggestion Exactly shows the exact value. - Results and inputs show large numbers in groups of three digits, such as 1 234 567. Settings > Digit Grouping offers another separator, or none. The editor and copied text keep plain digits, and a number too long for the screen continues on the next line. - On iOS 26, the titles of What's New and the welcome pages are no longer cut off at the top. - On an iPhone in landscape, the Tools menu shows all its tools without scrolling. - Plot Settings show a swatch next to each color, and a color that is not in the list appears as Custom Color. - VoiceOver reads ( and ) as parentheses instead of braces, and selecting entries in Select mode works as expected. The German and French texts are clearer. - The previous version of PocketCAS still opens your documents. It shows the new reasons as plain text next to the result. Changes from version 2026.1: - Under a function's result, suggestions show its derivative with the answer, and a small plot sits next to it. Tap one to add it to your document. - Results look like a math textbook, and long results wrap to the width of the screen. - Clearer 2D plots with a finer grid, and 3D surfaces with soft light and shading. Plots in a document pan, turn and zoom right where they are. - A new keyboard look, with your recent functions right above it. - A short welcome for new users, and the function reference now lists every function, with a PRO badge on the ones that PocketCAS Pro adds. - On iOS 26 and later, PocketCAS uses Apple's new design, Liquid Glass, and has a new icon. - Brackets close by themselves. If something works differently from what you are used to, or you find a problem, please write to us. ### 2026.1 — 2026-10-12 This is the biggest PocketCAS update in years, with a new design and new ways to understand your results. - Under a function's result, suggestions show its derivative with the answer, and a small plot sits next to it. Tap one to add it to your document. - Results look like a math textbook, and long results wrap to the width of the screen. - Clearer 2D plots with a finer grid, and 3D surfaces with soft light and shading. Plots in a document pan, turn and zoom right where they are. - A new keyboard look, with your recent functions right above it. - A short welcome for new users, and the function reference now lists every function, with a PRO badge on the ones that PocketCAS Pro adds. - On iOS 26 and later, PocketCAS uses Apple's new design, Liquid Glass, and has a new icon. - Brackets close by themselves. If something works differently from what you are used to, or you find a problem, please write to us. ### 2024.1 — 2024-11-06 - Updated our 3D graphing from OpenGL to Metal. This should lead to better performance and nicer-looking graphs overall. - While at it, also increased the default precision of 3D graphs from 30 points per axis to 60. - Updated the CAS kernel to the latest version. ### 2023.1.5 — 2023-12-14 - Updated the CAS kernel to the latest version. - This version should finally resolve all remaining crashes on older operating system versions. ### 2023.1.4 — 2023-09-29 - Updated the CAS kernel to the latest version. - Version 2023.1.3 should hopefully fix a crash at launch on iOS 12. - Version 2023.1.4 should hopefully fix another crash when loading documents. ## Apps similar to PocketCAS | App | Rating | Price | Category | | --- | --- | --- | --- | | [SymCalc - Symbolic Calculator](https://appshunter.io/ios/app/symcalc-symbolic-calculator/id1263938541) | 4.5 (168) | Free | Education | | [GraphMath](https://appshunter.io/ios/app/graphmath/id1582680101) | 5.0 (12) | Free | Education | | [Madona: Run MATLAB/Octave code](https://appshunter.io/ios/app/madona-run-matlaboctave-code/id1332444309) | 3.7 (16) | Free | Education | | [Console for MATLAB programming](https://appshunter.io/ios/app/console-for-matlab-programming/id1600998307) | 4.6 (13) | Free | Education | | [Mathfuns - Makes Math Easier](https://appshunter.io/ios/app/mathfuns-makes-math-easier/id1144065047) | 4.7 (10) | Free | Education | | [HP Prime Lite](https://appshunter.io/ios/app/hp-prime-lite/id1208226883) | 3.6 (41) | Free | Education | ## More apps by Timing Software GmbH - [Mathematics with PocketCAS Pro](https://appshunter.io/ios/app/mathematics-with-pocketcas-pro/id517250782) All apps by Timing Software GmbH: https://appshunter.io/developer/333261118 ## Related topics [mathematics with pocketcas pro](https://appshunter.io/ios/topics/mathematics-with-pocketcas-pro) · [mathematical playground lite](https://appshunter.io/ios/topics/mathematical-playground-lite) · [ti nspire](https://appshunter.io/ios/topics/ti-nspire) --- *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 2026-10-19.*