GraphNCalc83 vs HP Prime Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GraphNCalc83
This app offers a powerful graphing calculator experience with touch-based input for enhanced interaction. It supports natural textbook notation, advanced math functions, and various plotting capabilities. Users can also utilize its programming features and built-in tools like unit conversion and a periodic table.
- Touch-based graphing and editing
- Natural textbook notation input
- Advanced math and statistical functions
- Parametric, polar, and f(x,y) equation graphing
- BASIC programming with fast execution
- Unit converter and physical constants
- Interactive periodic table
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GraphNCalc83 uses touch, color and blazing speed to handle your math problems. The familiar calculator keyboard, arrow keys and functions are enhanced with full touch input for all graphs, editors and menus. Enter calculations in natural textbook format. Enter fractions and view result as fractions. Trace graphs with your finger. Zoom in and out with a pinch. Explore regressions with a tap on the screen. Scroll through the list, matrix and calculation history with a swipe. Tap the ? key for help. Written using the latest 64 bit math libraries, GraphNCalc83 harnesses the amazing computing resources of the iPhone and iPad to provide a colorful, fast and fluid experience. Graphs scroll, glide and zoom smoothly. Matrix, statistics and BASIC programs run 500x times faster than traditional calculators. GraphNCalc83 includes: Algebraic entry: Enter problems using full algebraic textbook notation. The command line editor includes interactive parenthesis matching and high lighting, undo and redo, bubble function help and a 200 level calculation history and recall stack. Generate a PDF report of calculations for mailing or printing using the SEND function. Math functions: Trigonometry, logarithms, function minimum, maximum, numeric integration and derivatives, general solver, real and imaginary numbers, combination, permutation, random number generation, normal, T, chi squared, Fisher, poisson and geometric distributions, binary shift and rotate, test and logic operations, list operations including sort, std. deviation, sum, sequence, matrix determinant, transpose, sum, ref, rref, addition, multiplication. Graph functions, parametric, f(x,y) and polar equations and statistics plots: Full color graphs with touch to trace, pinch zoom, function minimum, maximum, intersections, asymptotes and numeric integration. Output graphs in high resolution PDF format for mailing or printing. Interactively explore function behavior using variables tied to slider bars. Statistics, Inferential Statistics and Distributions: A set of inferential statistics worksheets and graphs of distributions are included. The regression analysis screen allows you to quickly compute, view and analyze a data set using a variety of curve fitting methods. Table: Analyze functions using the table viewer. Use the split screen mode to simultaneously view a graph and table. Matrix and Lists: Matrix and list editors and a full set of matrix and list operations are built in. Unit Converter and Constants: Convert between a wide variety of scientific, engineering and common units. A large set of physical constants are also included. BASIC programming: Create, edit, debug and run BASIC programs. Programs run more than 500 times faster than traditional calculators. Import and execute .83p and .8xp files. Chemistry: The calculator includes a full featured periodic table, a mass calculator and a data base of element properties. The touch interface allows you to view and interact with the periodic table to view by series, state, melting point, boiling point, electronegativity, electron affinity, valence, ionization, radius, hardness, modulus, density, conductivity, heat and year discovered. Geometry: The geometry application computes perimeter and area for a variety of 2d geometric figures including squares, rectangles, parallelograms, triangles, polygons, circles, arcs and ellipses. A full triangle solver and interactive unit circle grapher are built in. Solve line intersections, project a point to a line and find a circle given 3 points. Finance: Compute time value of money problems including annuities, lump sums and uneven cash flow analysis with IRR and NPV Built-in user guide: A user guide is included and is a touch away using the ? key or ⓘ on any menu. All functions have a full manual page with description of arguments and examples of use. Pop up bubble help displays function arguments during problem entry and program editing.
HP Prime Pro
This app provides a comprehensive graphing calculator experience on your mobile device, mirroring the functionality of a physical HP Prime calculator. It's designed for students to solve complex problems, explore mathematical concepts, and utilize advanced features for various science and engineering fields.
- Advanced graphing of equations and inequalities
- 3D function plotting
- Units and base conversions
- Full-featured programming language
- Dynamic Geometry, Statistics, Finance, Spreadsheet apps
- Context-sensitive help
- Equation solving (single and systems)
- Computer Algebra System (CAS)
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HP Prime Pro is an extensive and integrated graphing calculator app that enables students to solve problems, learn, and explore on their mobile device. Designed with the same layout and features as the College Board approved HP Prime Graphing Calculator, the app answers the demands of the digital classroom and delivers flexible functionality anywhere you work. FEATURES: • Advanced graphing capabilities to graph implicit and explicit equations and inequalities, with the capability to trace or build tables of points of interest. • Use the Graph 3D feature to plot functions that define Z in terms of X and Y • Units & base conversions to handle the most complex problems in chemistry, physics, quantum mechanics and other engineering fields • Pinch-to-zoom and multi-touch capabilities for a hands-on, intuitive experience. • Full featured programming language including user defined functions and re-assignable keys • Perfect companion for secondary and collegiate mathematics courses with dynamic Geometry, Statistics, Finance, and Spreadsheet applications. • Just-in-time context-sensitive help available through the app. • Easily toggle decimals to special values of (a/b)*π, (a/b)*√(c/d), ln(a/b), and e^(a/b) • Solve single equations and systems of equations (linear and nonlinear).. • HP Prime Explorer allows the user discover several function families • Calculate bonds, cash flows, dates and more with the Finance feature. • Reduce keystrokes with optional RPN. • Delivers a multidimensional Computer Algebra System (CAS). • Authentic app, developed and supported by HP.
Screenshots
Verdict
The clearest difference is review sentiment: GraphNCalc83 at 98% against HP Prime Pro's 30%. GraphNCalc83 also leads on price ($12.99 vs $24.99) and rating (4.9 vs 3.2). HP Prime Pro's advantage is iOS requirement (12.0 vs 15.6). On update cadence, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
GraphNCalc83 costs $12.99 and HP Prime Pro $24.99 up front. Neither carries in-app purchases, so what you see is what you pay.
GraphNCalc83 holds the better App Store score, 4.9 against 3.2. That said, the two scores are not equally well evidenced: GraphNCalc83 has 4K ratings behind it against 81, so its average is the more settled of the two. Written reviews point the same way: 98% of GraphNCalc83's written reviews are positive against 30% of HP Prime Pro's.
GraphNCalc83 ships an update every 5 months, HP Prime Pro every 6 months. The most recent releases landed on September 28, 2026 and September 25, 2026 respectively.
| Parameter | GraphNCalc83 | HP Prime Pro |
|---|---|---|
| Price | $12.99 — better | $24.99 |
| Rating | 4.9 (4K ratings) — better | 3.2 (81 ratings) |
| Positive reviews | 98.1% of reviews — better | 30.3% of reviews |
| Number of ratings | 4K — better | 81 |
| Update frequency | Every 5 months — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | #63 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 12.0 — better |
| Further details — not scored | ||
| Size | 10 MB | 55 MB |
| Age rating | 4+ | 4+ |
| Developer | Ernest Brock | MORAVIA Consulting, spol. s r.o. |
Customer experience
GraphNCalc83
HP Prime Pro
User reviews
GraphNCalc83
From 4K App Store ratingsWhat we love
- 👍 Familiar TI-83/84 calculator interface
- 🚀 Powerful and feature-rich
- 💡 Touchscreen enhancements like zooming and tracing
- 👍 Convenient to have a graphing calculator on your phone
- 👍 Frequent updates and great developer support
Room to improve
- 🐛 Occasional issues with graph rendering and zooming
- ⚠️ Not allowed to use on tests/exams like physical calculators
HP Prime Pro
From 81 App Store ratingsWhat we love
- ✅ Accurate replication of HP Prime calculator functionality
- 📱 Convenient portable calculator without carrying physical device
- 🎨 High-resolution display better than physical calculator
- 🔄 Connectivity with HP Connectivity Kit for file transfer
- 📊 Powerful CAS and graphing capabilities
Room to improve
- 🐛 Outdated firmware (2021 vs 2025 on real device)
- 📏 Poor screen scaling and UI sizing issues
- 🖥️ Does not fill modern iPhone/iPad screens properly
- ⏱️ No updates in 4+ years despite hardware updates
- 🔌 No multitasking/split-screen support
Bugs and requests
GraphNCalc83
Reported bugs
2 issues- Occasional crashes or freezes
- Inconsistent behavior when scrolling through calculation history
Requested features
3 requests- Dark mode or customizable themes
- More advanced programming and scripting capabilities
- Support for additional calculator models (e.g., TI-89)
HP Prime Pro
Reported bugs
14 issues- CAS mode crashes (especially with solve, integrals, summation functions)
- App crashes on startup intermittently
- Settings revert after app restart (RPN mode, number format, font size)
- Keyboard not visible on some devices (black area instead)
- Touch input issues and delayed key responses
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- ATAN function returns incorrect values in degree mode
- arg() function inconsistent with angle settings
- Matrix determinant calculation crashes
- Cursor positioning issues in programming mode
- Network errors during setup
- Severe battery drain even when running in background
- Device overheating during use
- Graphing issues with certain functions (Y=X^(1/3))
- Incompatibility with iOS 11 and iOS 12
Requested features
10 requests- Update firmware to match latest HP Prime G2 (2025)
- Implement full-screen UI optimization for modern devices
- Add multitasking/split-view support for iPad
- Support native iOS keyboard for programming
- Enable system keyboard support (26 keys)
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- Optimize UI scaling for iPhone 11+ and modern iPad sizes
- Add key click volume control independent of ringer
- Improve text paste functionality from iOS
- Better integration with HP Connectivity Kit
- Responsive design for all screen orientations
In-app purchases
GraphNCalc83
No in-app purchases
HP Prime Pro
No in-app purchases









