# CALC Prime vs Taculator 84 Graphing Calc

The clearest difference is price: Taculator 84 Graphing Calc at Free against CALC Prime's $8.99. Taculator 84 Graphing Calc also leads on ratings volume (7.7K vs 4) and update cadence (every 3 weeks vs every 2 months). CALC Prime's advantage is in-app purchases (none vs 12) and review sentiment (74% vs 46%). On ads, device support and iOS requirement there is nothing between them.

Taculator 84 Graphing Calc is free to download; CALC Prime costs $8.99 up front. Taculator 84 Graphing Calc sells 7 in-app purchases, starting at $3.99 per month. CALC Prime asks for nothing beyond the download.

Taculator 84 Graphing Calc holds the better App Store score, 4.5 against 4.3. That said, the two scores are not equally well evidenced: Taculator 84 Graphing Calc has 7.7K ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 74% of CALC Prime's written reviews are positive against 46% of Taculator 84 Graphing Calc's, so the app with the better star average is not the one people write more warmly about.

CALC Prime ships an update every 2 months, Taculator 84 Graphing Calc every 3 weeks. The most recent releases landed on August 28, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | CALC Prime | Taculator 84 Graphing Calc |
| --- | --- | --- |
| Price | $8.99 | **Free** |
| Rating | [4.3 (4 ratings)](https://appshunter.io/ios/app/calc-prime/id842563364/reviews) | **[4.5 (7.7K ratings)](https://appshunter.io/ios/app/taculator-84-graphing-calc/id1457737367/reviews)** |
| Number of ratings | 4 | **7.7K** |
| Positive reviews | **73.7% of reviews** | 45.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 9 MB | 57 MB |
| Requires iOS | 15.5 | **15.0** |
| Devices | iPhone, iPad, iPod, Apple Watch | iPhone, iPad, iPod, Mac |
| Age rating | 4+ | 4+ |
| Developer | [QApps LLC](https://appshunter.io/developer/395652397) | [Di Venisco UG (haftungsbeschrankt)](https://appshunter.io/developer/1449451480) |

## What reviewers say

### CALC Prime

[App page](https://appshunter.io/ios/app/calc-prime/id842563364)

This advanced scientific calculator is designed for professionals and students, offering a wide range of functions, live conversions, and graphing capabilities. It features a history log, customizable themes, and easy expression editing, making complex calculations intuitive and visually appealing.

**Highlights:** Advanced scientific calculation, Smart Basic Graphing, Live currency and custom conversions, History log with aggregate functions, Customizable themes and layout, Native watchOS app and custom keyboard

**Features:** Apple Watch app

**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 | $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


## Frequently asked questions

### Is CALC Prime free?

CALC Prime costs $8.99, with no in-app purchases.

### Is Taculator 84 Graphing Calc free?

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

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

Taculator 84 Graphing Calc is rated higher. CALC Prime averages 4.3 out of 5 from 4 ratings, while Taculator 84 Graphing Calc averages 4.5 from 7.7K ratings.

### Do CALC Prime or Taculator 84 Graphing Calc have ads?

Neither CALC Prime nor Taculator 84 Graphing Calc shows ads.

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

CALC Prime ships an update every 2 months, and Taculator 84 Graphing Calc every 3 weeks. Most recently, CALC Prime was updated on August 28, 2026 and Taculator 84 Graphing Calc on October 26, 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.*