# Taculator 84 Graphing Calc vs Derive

The clearest difference is monetization model: Taculator 84 Graphing Calc at free with in-app purchases against Derive's subscription. Taculator 84 Graphing Calc also leads on rating (4.5 vs 4.1) and ratings volume (7.6K vs 21). Derive's advantage is update cadence (every 3 days vs every 3 weeks). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Taculator 84 Graphing Calc sells 7 in-app purchases, starting at $3.99 per month and Derive sells 6 in-app purchases, starting at $8.99 per month. Whichever you choose, the download price is not the number that matters.

Taculator 84 Graphing Calc holds the better App Store score, 4.5 against 4.1. That said, the two scores are not equally well evidenced: Taculator 84 Graphing Calc has 7.6K ratings behind it against 21, so its average is the more settled of the two. Written reviews point the same way: 46% of Taculator 84 Graphing Calc's written reviews are positive against 29% of Derive's.

Taculator 84 Graphing Calc ships an update every 3 weeks, Derive every 3 days. Both last shipped on October 15, 2026.

## The numbers

| Metric | Taculator 84 Graphing Calc | Derive |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (7.6K ratings)](https://appshunter.io/ios/app/taculator-84-graphing-calc/id1457737367/reviews)** | [4.1 (21 ratings)](https://appshunter.io/ios/app/derive-handwritten-math-notes/id6763991536/reviews) |
| Number of ratings | **7.6K** | 21 |
| Positive reviews | **45.5% of reviews** | 29.4% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 57 MB | 75 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Di Venisco UG (haftungsbeschrankt)](https://appshunter.io/developer/1449451480) | [Derive Notes Pty Ltd](https://appshunter.io/developer/1895589672) |

## What reviewers say

### 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 | $7.99 | 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


### Derive

[App page](https://appshunter.io/ios/app/derive-handwritten-math-notes/id6763991536)

This app provides an infinite canvas for handwritten math and science notes. It uses AI to recognize your handwriting, offering a live tutor for step-by-step assistance directly within your notes. Organize your work into notebooks that sync across devices.

**Highlights:** Infinite canvas for note-taking, Handwritten math recognition, Live AI tutor for step-by-step help, Notebook and page organization, Cross-device syncing, Light, dark, and sepia themes

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Derive Pro (Monthly, student) | $8.99 | per month |
| Derive Pro (Monthly) | $9.99 | per month |
| Derive Pro (Monthly, invited) | $9.99 | per month |
| Derive Pro (Yearly, student) | $75.00 | per year |
| Derive Pro (Annual) | $83.90 | per year |
| Derive Pro (Annual, invited) | $83.90 | per year |


## Frequently asked questions

### Is Taculator 84 Graphing Calc free?

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

### Is Derive free?

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

### Which has better reviews, Taculator 84 Graphing Calc or Derive?

Taculator 84 Graphing Calc is rated higher. Taculator 84 Graphing Calc averages 4.5 out of 5 from 7.6K ratings, while Derive averages 4.1 from 21 ratings.

### Do Taculator 84 Graphing Calc or Derive have ads?

Neither Taculator 84 Graphing Calc nor Derive shows ads.

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

Taculator 84 Graphing Calc ships an update every 3 weeks, and Derive every 3 days. Most recently, Taculator 84 Graphing Calc was updated on October 15, 2026 and Derive on October 15, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*