# PocketCAS vs Java SE 21 Practice 1Z0

The clearest difference is price: PocketCAS at Free against Java SE 21 Practice 1Z0's $4.99. Java SE 21 Practice 1Z0's advantage is in-app purchases (none vs 1) and iOS requirement (15.1 vs 18.0). On ads and device support there is nothing between them.

PocketCAS is free to download; Java SE 21 Practice 1Z0 costs $4.99 up front. PocketCAS sells 1 one-off in-app purchase. Java SE 21 Practice 1Z0 asks for nothing beyond the download.

## The numbers

| Metric | PocketCAS | Java SE 21 Practice 1Z0 |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[4.6 (204 ratings)](https://appshunter.io/ios/app/pocketcas-graphing-calculator/id517249689/reviews)** | — |
| Number of ratings | **204** | — |
| Positive reviews | 90.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Monetization | Free | — |
| Size | 42 MB | 34 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Timing Software GmbH](https://appshunter.io/developer/333261118) | [satoshi yoshida](https://appshunter.io/developer/1873856165) |

## What reviewers say

### PocketCAS

[App page](https://appshunter.io/ios/app/pocketcas-graphing-calculator/id517249689)

This advanced math application assists with a wide range of mathematical problems, from basic arithmetic to calculus, algebra, and statistics. It functions as a graphing calculator replacement, aids in homework, and supports complex calculations for academic and professional use.

**Highlights:** 2D and 3D plotting, Calculus functions (limits, derivatives), Linear algebra operations, Equation solving, Scripting language, Physical units and constants, iCloud sync

**Features:** Family Sharing, iPhone Duo support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PocketCAS Pro | $29.99 | one-time |

**What reviewers like**

- 👍 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

**What reviewers complain about**

- 🐛 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

**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

**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


### Java SE 21 Practice 1Z0

[App page](https://appshunter.io/ios/app/java-se-21-practice-1z0-830/id6778314795)

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

**In-app purchases:** none


## Frequently asked questions

### Is PocketCAS free?

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

### Is Java SE 21 Practice 1Z0 free?

Java SE 21 Practice 1Z0 costs $4.99, with no in-app purchases.

### Do PocketCAS or Java SE 21 Practice 1Z0 have ads?

Neither PocketCAS nor Java SE 21 Practice 1Z0 shows ads.

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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.*