Calculator ∞ vs HP Prime Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calculator ∞
This advanced calculator app offers a powerful math core and algebra engine for basic to complex calculations. It includes features like step-by-step solutions, handwriting recognition, and 2D graphing, making it suitable for students, engineers, and programmers.
- Step-by-step solution hints
- Math Photos Solver
- Handwriting Recognition
- AI Math Problem Solver
- 2D Graphing
- Unit Converter
- Matrix/Vector Mode
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◉ Top Paid Educational Apps in US, UK, AUS, GER,... ◉ QAppReview.com Rated 9/10 ◉ Users Reviewed: "Top Class Calculator !" The BEST Alternative to Graphing TI-83, TI-84, TI-89, Casio FX, Sharp EL,... Calculator Infinity (∞) – The sleek, multi-function calculator for iPhone/iPad is proud to offer a variety of features to satisfy all ranges of customers: The App possesses a powerful math core and algebra engine with mathematical display support, making it a viable tool for everyone from those looking for basic calculation to more advanced users, such as scientific computation, programmers, engineers, and math students. Calculator ∞ makes available everything you need – including a user manual and tutorial video clips – so you can master the app in a matter of minutes! ◉ Official Website: http://iPhoneCalculator.com ◉ ADVANCED FEATURES: ▸ Step-by-step solution (Hints) ▸ Math Photos Solver * ▸ Handwriting Recognition * ▸ Math Problem Solver (AI) * ▸ Well Organized of Functions ◉ GENERAL FEATURES: ▸ Universal Calculator App ¹ ▸ Support Multitasking (iPad) ▸ Support Wireless KB² ▸ Mathematical Display ▸ Edit & Export Expression/Result ▸ History Tape View ▸ Basic Calculations (+, -, x, ÷, %, Abs,...) ▸ Advanced Functions (Sin, Cos, Ln, X!, ^, √,…) ▸ Memory Variables (Including X,Y,Z,M) ▸ F(x) Customize Functions (F1, F2, F3) ▸ Unit Converter (40 Categories, 1000+ Units) ▸ Over 40 Common Constants ▸ Fraction and Degree/Angle Calculation ▸ Numeric Integral & Derivative Calculation ▸ Dual Skins (Silver Light & Carbon+) ▸ No Ads ◉ ALGEBRA FEATURES: ▸ Big Integer & Rational Number (Up to 500!) ▸ Expand and Factor Polynomials ▸ Indefinite integral & Derivative ▸ Two-side Limit ▸ Taylor Series Expansion ▸ Hints and Solutions ◉ 2D GRAPH: ▸ Simultaneous Graph ▸ Smooth Zoom & Transformation ▸ Support F(X,Y) = 0. E.g. Sin(X) + Cos(Y) = 0. ▸ Conic Equations (Parabola, Hyperbola, Ellipse) ▸ Get Intersections, Min, Max & Special Points ◉ CLOUD COMPUTING: ▸ Advanced Two-side Limit ▸ Advanced Indefinite Integral ▸ General Equations (Accurate Roots) ◉ EQUATIONS SOLVERS: ▸ General Equations (Numerical Roots) ▸ Quadratic & Cubic Equations ▸ System of Linear Equations (2 & 3 Unknowns) ◉ REGRESSION & STATISTICS: ▸ Modify & Sort Data ▸ Single Variable Statistics ▸ Linear, Quadratic, Power Regression ▸ Logarithmic & Exponential Regression ◉ COMPLEX CALCULATION: ▸ Polar & Rectangular Notation ▸ Argument, Conjugate Function ▸ Trigonometry Functions ▸ Logarithmic & Exponential Functions ◉ MATRIX/VECTOR MODE: ▸ Support Up to 7x7 Matrix ▸ Support Complex Numbers ▸ Cross, Dot Product ▸ Det, Inverse, Transpose ▸ Cramer’s Rule Solver ▸ Numerical Real Eigenvalues ◉ NUMBER BASE-N MODE: ▸ 15 Different Bases ▸ Support Up to 32 Bits Integer ▸ Binary Operation (NOT, OR, XOR, 2’S, …) ◉ MULTIPLE LANGUAGES: ▸ English, Spanish, German, ▸ French, Japanese, Chinese (*) In-App-Purchase is required ¹: Include iPhone SE, PRO, PRO-MAX, iPad... ²: Standard English KB Calculator ∞ is not only the Calculator IT IS THE MUST HAVE CALCULATOR !!! We love your feedback, Thanks a lot ! Please contact us for questions, bugs/crash reports, conversion requirements, etc.... Terms of Service: https://iphonecalculator.com/terms-of-service/
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 price: Calculator ∞ at $5.99 against HP Prime Pro's $24.99. Calculator ∞ also leads on review sentiment (75% vs 30%) and rating (4.7 vs 3.2). HP Prime Pro's advantage is in-app purchases (none vs 4). On ads, device support and iOS requirement 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
Calculator ∞ costs $5.99 and HP Prime Pro $24.99 up front. Calculator ∞ sells 4 in-app purchases, starting at $3.49 per month. HP Prime Pro asks for nothing beyond the download.
Calculator ∞ holds the better App Store score, 4.7 against 3.2. That said, the two scores are not equally well evidenced: Calculator ∞ has 6.3K ratings behind it against 81, so its average is the more settled of the two. Written reviews point the same way: 75% of Calculator ∞'s written reviews are positive against 30% of HP Prime Pro's.
Calculator ∞ ships an update every 2 months, HP Prime Pro every 6 months. The most recent releases landed on September 24, 2026 and September 25, 2026 respectively.
| Parameter | Calculator ∞ | HP Prime Pro |
|---|---|---|
| Price | $5.99 — better | $24.99 |
| Rating | 4.7 (6.3K ratings) — better | 3.2 (81 ratings) |
| Positive reviews | 74.7% of reviews — better | 30.3% of reviews |
| Number of ratings | 6.3K — better | 81 |
| Update frequency | Every 2 months — better | Every 6 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.1 | 12.0 — better |
| Further details — not scored | ||
| Size | 46 MB | 55 MB |
| Age rating | 4+ | 4+ |
| Developer | Incpt.Mobis | MORAVIA Consulting, spol. s r.o. |
Customer experience
Calculator ∞
HP Prime Pro
Bugs and requests
Calculator ∞
Not enough reviews yet to summarise bugs or requests.
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
Calculator ∞
- Unlimited OCR/Writing 1 Month$3.491 Month
- Unlimited OCR/Writing 3 Months$8.993 Months
- 400 AI Recognition & Queries$0.99
- 900 AI Recognition & Queries$1.99
HP Prime Pro
No in-app purchases
Questions
Is Calculator ∞ free?
Is HP Prime Pro free?
Which has better reviews, Calculator ∞ or HP Prime Pro?
Do Calculator ∞ or HP Prime Pro have ads?
Which is updated more often, Calculator ∞ or HP Prime Pro?
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