# Calculate84 Plus vs IntroStat

The clearest difference is ads: Calculate84 Plus at none against IntroStat's shown. Calculate84 Plus also leads on ratings volume (305 vs 24). IntroStat's advantage is rating (4.9 vs 4.5) and review sentiment (92% vs 64%). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. Calculate84 Plus sells 10 in-app purchases, starting at $2.99 per month and IntroStat sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

IntroStat holds the better App Store score, 4.9 against 4.5. That said, the two scores are not equally well evidenced: Calculate84 Plus has 305 ratings behind it against 24, so its average is the more settled of the two. Written reviews point the same way: 64% of Calculate84 Plus's written reviews are positive against 92% of IntroStat's.

Calculate84 Plus ships an update every 2 months, IntroStat every 3 months. The most recent releases landed on September 26, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Calculate84 Plus | IntroStat |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (305 ratings)](https://appshunter.io/ios/app/calculate84-plus/id1472933065/reviews) | **[4.9 (24 ratings)](https://appshunter.io/ios/app/introstat-statistics-solver/id1592602025/reviews)** |
| Number of ratings | **305** | 24 |
| Positive reviews | 64.0% of reviews | **92.3% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 33 MB | 38 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Di Venisco UG (haftungsbeschrankt)](https://appshunter.io/developer/1449451480) | [Zhiyi Zhang](https://appshunter.io/developer/1592602327) |

## What reviewers say

### Calculate84 Plus

[App page](https://appshunter.io/ios/app/calculate84-plus/id1472933065)

This app provides advanced scientific and graphing calculator functionality. It allows users to plot multiple functions, perform complex mathematical operations, analyze data with statistics, and manage matrices. An optional subscription unlocks even more features.

**Highlights:** Natural textbook equation input, Plot multiple functions with touch controls, Advanced math, number, and probability functions, 1- and 2- Variable statistics, Matrix arithmetic and equation solving, Extensive command catalog

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HyperCalc - Monthly | $2.99 | per month |
| HyperCalc - Monthly | $2.99 | per month |
| HyperCalc - Monthly | $4.99 | per month |
| HyperCalc - Monthly | $4.99 | per month |
| HyperCalc - Yearly | $14.99 | per year |
| HyperCalc - Yearly | $14.99 | per year |
| HyperCalc - Yearly | $19.99 | per year |
| HyperCalc - Yearly | $19.99 | per year |
| HyperCalc - Lifetime | $29.99 | one-time |
| HyperCalc - Lifetime | $39.99 | one-time |

**What reviewers like**

- 👍 Similar to TI-84
- 👍 Good for stats
- 👍 Accurate calculations
- 👍 No ads
- 👍 Fresh design

**What reviewers complain about**

- 💰 Many features require payment
- 💰 Not free as advertised
- 💰 Subscription model disliked
- 💰 Lifetime purchase issues
- 💰 Expensive ($30)

**Reported bugs**

- Domain incorrect in y= table
- App closes when pulling up table
- Cannot input negative matrices
- App freezes during IAP search
- Cannot drag functions

**Requested features**

- Dark mode
- Numeric solver (free)
- 2nd function
- Chinese language support
- Tutorial videos


### IntroStat

[App page](https://appshunter.io/ios/app/introstat-statistics-solver/id1592602025)

This app serves as a comprehensive statistics calculator and learning tool for introductory statistics courses. It offers a wide range of calculation features, data visualization, and an integrated textbook with formulas and examples.

**Highlights:** Summary statistics calculation, Data visualization (boxplots, histograms), Probability calculations, Hypothesis testing, Confidence intervals, Integrated statistics textbook

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| IntroStat Premium Features | $4.99 | one-time |


## Frequently asked questions

### Is Calculate84 Plus free?

Calculate84 Plus is free to download, with in-app purchases available.

### Is IntroStat free?

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

### Which has better reviews, Calculate84 Plus or IntroStat?

IntroStat is rated higher. Calculate84 Plus averages 4.5 out of 5 from 305 ratings, while IntroStat averages 4.9 from 24 ratings.

### Do Calculate84 Plus or IntroStat have ads?

IntroStat shows ads; Calculate84 Plus does not.

### Which is updated more often, Calculate84 Plus or IntroStat?

Calculate84 Plus ships an update every 2 months, and IntroStat every 3 months. Most recently, Calculate84 Plus was updated on September 26, 2026 and IntroStat on September 18, 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.*