# HP Prime Pro vs CASIO fx

The clearest difference is price: CASIO fx at Free against HP Prime Pro's $24.99. HP Prime Pro's advantage is rating (3.2 vs 2.7) and in-app purchases (none vs 1). On review sentiment, update cadence, ads and device support there is nothing between them.

CASIO fx is free to download; HP Prime Pro costs $24.99 up front. CASIO fx sells 1 in-app purchase, starting at $1.99 per month. HP Prime Pro asks for nothing beyond the download.

HP Prime Pro holds the better App Store score, 3.2 against 2.7. That said, the two scores are not equally well evidenced: HP Prime Pro has 81 ratings behind it against 9, so its average is the more settled of the two. Written reviews complicate that: 30% of HP Prime Pro's written reviews are positive against 33% of CASIO fx's, so the app with the better star average is not the one people write more warmly about.

Both ship on a similar rhythm, roughly every 6 months. The most recent releases landed on November 6, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | HP Prime Pro | CASIO fx |
| --- | --- | --- |
| Price | $24.99 | **Free** |
| Rating | **[3.2 (81 ratings)](https://appshunter.io/ios/app/hp-prime-pro/id1064702857/reviews)** | [2.7 (9 ratings)](https://appshunter.io/ios/app/casio-fx-cg500/id1256306989/reviews) |
| Number of ratings | **81** | 9 |
| Positive reviews | 30.3% of reviews | **33.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | Every 6 months |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 55 MB | 54 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MORAVIA Consulting, spol. s r.o.](https://appshunter.io/developer/1673101600) | [CASIO COMPUTER CO., LTD.](https://appshunter.io/developer/456569836) |

## What reviewers say

### 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)


### CASIO fx

[App page](https://appshunter.io/ios/app/casio-fx-cg500/id1256306989)

This app provides advanced mathematical and scientific calculation tools, including graphing and a computer algebra system. It offers a user interface similar to the handheld fx-CG500, with access to various applications like eActivity, Spreadsheet, Geometry, and Physium. It's designed to enhance learning for both new and experienced users.

**Highlights:** Complex calculations, Graph drawing, Computer Algebra System (CAS), eActivity for worksheets, Spreadsheet with statistical analysis, Geometry with animations, Physium periodic table and constants

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| fx-CG500 1 Month Subscription | $1.99 | per month |


## Frequently asked questions

### Is HP Prime Pro free?

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

### Is CASIO fx free?

CASIO fx is free to download, with in-app purchases available.

### Which has better reviews, HP Prime Pro or CASIO fx?

HP Prime Pro is rated higher. HP Prime Pro averages 3.2 out of 5 from 81 ratings, while CASIO fx averages 2.7 from 9 ratings.

### Do HP Prime Pro or CASIO fx have ads?

Neither HP Prime Pro nor CASIO fx shows ads.

### Which is updated more often, HP Prime Pro or CASIO fx?

HP Prime Pro ships an update every 6 months, and CASIO fx every 6 months. Most recently, HP Prime Pro was updated on November 6, 2026 and CASIO fx on November 5, 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.*