# PocketCAS vs Trigonometry Formulas

The clearest difference is price: PocketCAS at Free against Trigonometry Formulas's $0.99. PocketCAS also leads on ratings volume (204 vs 2) and update cadence (every 3 months vs every 10 months). Trigonometry Formulas's advantage is in-app purchases (none vs 1) and rating (5.0 vs 4.6). On ads and device support there is nothing between them.

PocketCAS is free to download; Trigonometry Formulas costs $0.99 up front. PocketCAS sells 1 one-off in-app purchase. Trigonometry Formulas asks for nothing beyond the download.

Trigonometry Formulas holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: PocketCAS has 204 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 91% of PocketCAS's written reviews are positive against 100% of Trigonometry Formulas's.

PocketCAS ships an update every 3 months, Trigonometry Formulas every 10 months. The most recent releases landed on October 23, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | PocketCAS | Trigonometry Formulas |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | [4.6 (204 ratings)](https://appshunter.io/ios/app/pocketcas-graphing-calculator/id517249689/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/trigonometry-formulas/id1477059658/reviews)** |
| Number of ratings | **204** | 2 |
| Positive reviews | 90.8% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 10 months |
| Monetization | **Free** | Paid |
| Size | 42 MB | 27 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Timing Software GmbH](https://appshunter.io/developer/333261118) | [Ranjeet Kumar](https://appshunter.io/developer/1476822683) |

## 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

**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


### Trigonometry Formulas

[App page](https://appshunter.io/ios/app/trigonometry-formulas/id1477059658)

Access a comprehensive collection of trigonometry formulas, including ratios, functions, standard angle values, and identities. This app covers basic to advanced topics like inverse circular functions and properties of triangles, serving as a handy reference for students and enthusiasts.

**Highlights:** Trigonometric Ratios and Functions, Basic Trigonometric Formulas, Standard Angle Values, Quadrant Rules of Signs, Addition and Subtraction Formulas, Inverse Circular Functions, Properties of Triangles

**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 Trigonometry Formulas free?

Trigonometry Formulas costs $0.99, with no in-app purchases.

### Which has better reviews, PocketCAS or Trigonometry Formulas?

Trigonometry Formulas is rated higher. PocketCAS averages 4.6 out of 5 from 204 ratings, while Trigonometry Formulas averages 5.0 from 2 ratings.

### Do PocketCAS or Trigonometry Formulas have ads?

Neither PocketCAS nor Trigonometry Formulas shows ads.

### Which is updated more often, PocketCAS or Trigonometry Formulas?

PocketCAS ships an update every 3 months, and Trigonometry Formulas every 10 months. Most recently, PocketCAS was updated on October 23, 2026 and Trigonometry Formulas on October 2, 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.*