# iformula vs PocketCAS

The clearest difference is rating: PocketCAS at 4.6 against iformula's 4.0. PocketCAS also leads on review sentiment (91% vs 65%) and ratings volume (204 vs 1). iformula's advantage is in-app purchases (none vs 1). On price, update cadence, ads and monetization model there is nothing between them.

Both are free to download. PocketCAS sells 1 one-off in-app purchase. iformula asks for nothing beyond the download.

PocketCAS holds the better App Store score, 4.6 against 4.0. That said, the two scores are not equally well evidenced: PocketCAS has 204 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 65% of iformula's written reviews are positive against 91% of PocketCAS's.

iformula ships an update every 2 months, PocketCAS every 3 months. The most recent releases landed on October 25, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | iformula | PocketCAS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (1 ratings)](https://appshunter.io/ios/app/iformula/id325337275/reviews) | **[4.6 (204 ratings)](https://appshunter.io/ios/app/pocketcas-graphing-calculator/id517249689/reviews)** |
| Number of ratings | 1 | **204** |
| Positive reviews | 65.0% of reviews | **90.8% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free | Free |
| Size | 59 MB | 42 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Tobias Werner](https://appshunter.io/developer/325337278) | [Timing Software GmbH](https://appshunter.io/developer/333261118) |

## What reviewers say

### iformula

[App page](https://appshunter.io/ios/app/iformula/id325337275)

This app is a comprehensive math learning platform for students and professionals. It offers a vast library of over 1000 math equations and topics, along with features like search, note-taking, and bookmarking. It aims to eliminate the need for physical math textbooks.

**Highlights:** 1000+ math equations and topics, Full-featured search functionality, Note-taking system, Bookmarking for favorite equations, Dual language support (English & German), Dark mode support

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is iformula free?

iformula is free to download, with no in-app purchases.

### Is PocketCAS free?

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

### Which has better reviews, iformula or PocketCAS?

PocketCAS is rated higher. iformula averages 4.0 out of 5 from 1 ratings, while PocketCAS averages 4.6 from 204 ratings.

### Do iformula or PocketCAS have ads?

Neither iformula nor PocketCAS shows ads.

### Which is updated more often, iformula or PocketCAS?

iformula ships an update every 2 months, and PocketCAS every 3 months. Most recently, iformula was updated on October 25, 2026 and PocketCAS on October 29, 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.*