# Leonhard Euler vs Taculator 84 Graphing Calc

The clearest difference is price: Taculator 84 Graphing Calc at Free against Leonhard Euler's $1.99. Taculator 84 Graphing Calc also leads on update cadence (every 3 weeks vs every 3 months) and iOS requirement (13.0 vs 15.6). Leonhard Euler's advantage is in-app purchases (none vs 12). On ads and device support there is nothing between them.

Taculator 84 Graphing Calc is free to download; Leonhard Euler costs $1.99 up front. Taculator 84 Graphing Calc sells 7 in-app purchases, starting at $3.99 per month. Leonhard Euler asks for nothing beyond the download.

Leonhard Euler ships an update every 3 months, Taculator 84 Graphing Calc every 3 weeks. The most recent releases landed on September 25, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Leonhard Euler | Taculator 84 Graphing Calc |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[4.5 (7.6K ratings)](https://appshunter.io/ios/app/taculator-84-graphing-calc/id1457737367/reviews)** |
| Number of ratings | — | **7.6K** |
| Positive reviews | — | 45.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 42 MB | 55 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPad, Mac, Apple TV | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Ventura Educational Systems](https://appshunter.io/developer/371324172) | [Di Venisco UG (haftungsbeschrankt)](https://appshunter.io/developer/1449451480) |

## What reviewers say

### Leonhard Euler

[App page](https://appshunter.io/ios/app/leonhard-euler/id1451119959)

**Features:** Vision Pro support

**In-app purchases:** none


### Taculator 84 Graphing Calc

[App page](https://appshunter.io/ios/app/taculator-84-graphing-calc/id1457737367)

This advanced calculator app offers comprehensive tools for high school and college students, covering everything from pre-algebra to calculus and statistics. It features high-resolution graphing, matrix operations, and detailed statistical analysis, all accessible through an intuitive interface.

**Highlights:** Scientific and advanced math functions, High-resolution graphing and plotting, Matrix operations and storage, List, statistics, and distribution calculations, Integrated command catalog and help, Complex number support, Share calculations via text or email

**Features:** Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Taculator Pro - Monthly | $3.99 | per month |
| Taculator Pro - Monthly | $3.99 | per month |
| Taculator Pro - Yearly | $14.99 | per year |
| Taculator Pro - Yearly | $14.99 | per year |
| Taculator Pro - Yearly | $29.99 | per year |
| Taculator Pro | $29.99 | per year |
| Taculator Pro - Lifetime | $5.99 | one-time |

**What reviewers like**

- 🚀 Excellent implementation and familiar layout
- 💡 Customizable buttons and color scheme
- 👍 Helpful and life-saving calculator
- 🚀 Best on-the-go calculator

**What reviewers complain about**

- 🐛 Crashes when trying to graph or use certain functions
- 🔒 Requires subscription to access full functionality
- 🐛 Inaccurate calculations and wrong results
- 🐛 Inconsistent performance and unreliable

**Reported bugs**

- Cannot handle negative powers
- Keyboard issues on certain devices
- Errors when trying to clear lists
- Scaling and UI issues on some devices

**Requested features**

- Add apps and programming features
- Improve graphing capabilities
- Add support for degrees, minutes, and seconds
- Implement symbolic calculus and equation solving


## Frequently asked questions

### Is Leonhard Euler free?

Leonhard Euler costs $1.99, with no in-app purchases.

### Is Taculator 84 Graphing Calc free?

Taculator 84 Graphing Calc is free to download, with in-app purchases available.

### Do Leonhard Euler or Taculator 84 Graphing Calc have ads?

Neither Leonhard Euler nor Taculator 84 Graphing Calc shows ads.

### Which is updated more often, Leonhard Euler or Taculator 84 Graphing Calc?

Leonhard Euler ships an update every 3 months, and Taculator 84 Graphing Calc every 3 weeks. Most recently, Leonhard Euler was updated on September 25, 2026 and Taculator 84 Graphing Calc 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.*