# Calculator ∞ vs HP Prime Pro

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.

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.

## The numbers

| Metric | Calculator ∞ | HP Prime Pro |
| --- | --- | --- |
| Price | **$5.99** | $24.99 |
| Rating | **[4.7 (6.3K ratings)](https://appshunter.io/ios/app/calculator/id458535809/reviews)** | [3.2 (81 ratings)](https://appshunter.io/ios/app/hp-prime-pro/id1064702857/reviews) |
| Number of ratings | **6.3K** | 81 |
| Positive reviews | **74.7% of reviews** | 30.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 6 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 46 MB | 55 MB |
| Requires iOS | 12.1 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Incpt.Mobis](https://appshunter.io/developer/445261166) | [MORAVIA Consulting, spol. s r.o.](https://appshunter.io/developer/1673101600) |

## What reviewers say

### Calculator ∞

[App page](https://appshunter.io/ios/app/calculator/id458535809)

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.

**Highlights:** Step-by-step solution hints, Math Photos Solver, Handwriting Recognition, AI Math Problem Solver, 2D Graphing, Unit Converter, Matrix/Vector Mode

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited OCR/Writing 1 Month | $3.49 | per month |
| Unlimited OCR/Writing 3 Months | $8.99 | per 3 months |
| 400 AI Recognition & Queries | $0.99 | one-time |
| 900 AI Recognition & Queries | $1.99 | one-time |


### HP Prime Pro

[App page](https://appshunter.io/ios/app/hp-prime-pro/id1064702857)

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.

**Highlights:** 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)

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- ✅ 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

**What reviewers complain about**

- 🐛 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

**Reported bugs**

- 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

**Requested features**

- 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)


## Frequently asked questions

### Is Calculator ∞ free?

Calculator ∞ costs $5.99, and also offers in-app purchases.

### Is HP Prime Pro free?

HP Prime Pro costs $24.99, with no in-app purchases.

### Which has better reviews, Calculator ∞ or HP Prime Pro?

Calculator ∞ is rated higher. Calculator ∞ averages 4.7 out of 5 from 6.3K ratings, while HP Prime Pro averages 3.2 from 81 ratings.

### Do Calculator ∞ or HP Prime Pro have ads?

Neither Calculator ∞ nor HP Prime Pro shows ads.

### Which is updated more often, Calculator ∞ or HP Prime Pro?

Calculator ∞ ships an update every 2 months, and HP Prime Pro every 6 months. Most recently, Calculator ∞ was updated on September 24, 2026 and HP Prime Pro on September 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*