# Calculate84 Plus — Intended for use with TI-84

> Advanced scientific and graphing calculator with matrix and statistics functions. (iPhone/iPad app by Di Venisco UG (haftungsbeschrankt).)

- Source: https://appshunter.io/ios/app/calculate84-plus/id1472933065 (this page in markdown: same URL + `.md`)
- Developer: [Di Venisco UG (haftungsbeschrankt)](https://appshunter.io/developer/1449451480)
- Category: Education, Utilities
- Price: Free with in-app purchases
- Rating: 4.50/5 from 305 App Store ratings · 25 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 33 MB
- Languages: American English
- Released: 2019-10-07
- Data updated: 2026-08-15
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/calculate84-plus/id1472933065/reviews.md

## What is Calculate84 Plus?

Graph functions, use advanced math commands for your calculations, create tables, and perform statistics.

CALCULATE
• Type in equations in natural textbook format
• The scientific calculator solves all functions like sin, cos, tan, e, ln, Σ, log, ...
• Use MATH, NUM, and PROB functions

GRAPH
• The graphing calculator lets you plot more than ten functions at once, each with a different color
• Touch-enabled graph window
• Zoom and trace with your fingers in full-screen
• Find intersect, min, max, zero, integral, and derivative

STATISTICS
• Easily enter lists using the Statistics List Editor
• Perform 1- and 2- Variable Stats
• Find best-fit lines like LinReg, QuadReg, CubicReg, QuartReg, ExpReg
• Work with distributions and regressions

TABLE
• Analyze X and Y values of your functions

MATRIX
• Do basic matrix arithmetic operations like +, -, *, or power of a Matrix
• Put the matrix into Reduced Row-Echelon form and solve linear equation systems 
• Calculate the determinant, inversion or transpose the matrix

CATALOG
• Extensive catalog of all commands with syntax, example, and possible error messages 

CONTACT
Write to us at contact@hypercalc.org

---
For extended features such as more advanced calculations and functions, subscribe to HyperCalc.

Auto-Renewable Subscription Terms:
• Payment will be charged to iTunes Account at confirmation of purchase;
• Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period;
• Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal;
• Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase;
• Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable;
• Prices are in U.S. dollars, may vary in countries other than the U.S. and are subject to change without notice.

Terms of Service:
http://www.hypercalc.org/terms.html

Privacy Policy:
http://www.hypercalc.org/privacy.html

## Key features

- 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

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| HyperCalc - Monthly | $2.99 | per month |
| HyperCalc - Yearly | $14.99 | per year |
| HyperCalc - Yearly | $14.99 | per year |
| HyperCalc - Monthly | $2.99 | per month |
| HyperCalc - Monthly | $4.99 | per month |
| HyperCalc - Monthly | $4.99 | per month |
| HyperCalc - Yearly | $19.99 | per year |
| HyperCalc - Yearly | $19.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| HyperCalc - Lifetime | $29.99 | one-time |
| HyperCalc - Lifetime | $39.99 | one-time |


## Recent user reviews (10 of 25)

All indexed reviews: https://appshunter.io/ios/app/calculate84-plus/id1472933065/reviews.md

### 2/5 — 要钱

*2025-07-16*

好多功能要钱，别下

### 5/5 — Please look

*2025-06-02, version 1.1.3*

Please add a dark mode. Gives the app more personalization. Also missing a lot of ti-84 features like numeric solver. And you should definitely make the numeric solver specifically free, ya know. 😉😉


Wish y’all success!

### 4/5 — 的

*2024-09-13*

希望可以出个2nd的功能

### 3/5 — Glitch

*2024-07-23, version 1.1.3*

Overall, I liked this calculator.  It was similar to the ones that I am used to.  The color choices were nice and I was able to slide it wherever I wanted it to go on the screen. The most important part of a calculator is accuracy.  I was very disappointed when I typed a function into a the y= and pulled up the table that my domain was incorrect.  There was a random value instead of an error.  I even have a recording if this.  I tried contacting the email, got no response, so cancelled my subscription.

### 1/5 — It is not free as advertised

*2024-07-02, version 1.1.3*

They will charge you down loaded. Avoid this if you can . I did not see my review

### 5/5 — Just like a TI84!

*2024-04-12, version 1.1.3*

So helpful for stats! Definitely worth the $30!

### 5/5 — Table issue

*2021-11-10, version 1.1.2*

App is great but when I try and pull up the table for an equation in y= the app just closes for some reason.

### 5/5 — 能有中文吗？ 有教学视频吗 不这么会用。

*2021-03-09*

如题

### 1/5 — Already paid

*2021-01-04, version 1.1.2*

I paid for the lifetime a few months ago but the new update gave me the base features and said I had to pay again

### 5/5 — Review, and I paid for this

*2020-10-08, version 1.1.0*

I’m leaving this review because of a glitch and so you see it; your calculator does not allow people to input negative matrices. Like, you can’t input “-2” or anything as a value. Thank you. Please fix this and any other glitches ASAP.

## Frequently asked questions about Calculate84 Plus

### What does Calculate84 Plus do?

Calculate84 Plus is an advanced calculator app that functions as a scientific and graphing calculator. It allows you to input equations in a natural format, solve complex functions, plot multiple graphs with touch controls, perform statistical analysis, and work with matrices.

### What are the key features of this calculator app?

Key features include typing equations in natural textbook format, solving functions like sin, cos, and log, plotting over ten functions simultaneously with touch-enabled zooming and tracing, performing 1- and 2- variable statistics, basic matrix operations, and an extensive catalog of commands.

### Is Calculate84 Plus free to use?

The app offers a free version with core calculator and graphing functionalities. For extended features, more advanced calculations, and functions, users can subscribe to HyperCalc through an auto-renewable subscription.

### What kind of math can I do with this app?

You can perform a wide range of mathematical operations, including trigonometric functions (sin, cos, tan), exponential and logarithmic functions (e, ln, log), summation (Σ), and advanced functions. It also supports matrix arithmetic and solving linear equation systems.

### Who is this app intended for?

This app is intended for users who need a powerful calculator similar to a TI-84. This includes students studying mathematics, science, and engineering, as well as professionals who require advanced calculation and graphing capabilities on their mobile device.

## Version history (last 5 releases)

### 1.1.3 — 2023-11-08

+ Performance Improvements
+ 1000s separator
+ Bug fixes

### 1.1.2 — 2020-12-10

+ New side menu that makes it easier for you to quickly access links. Open it by swiping left to right in the calculations menu.
+ Redesigned Y= menu. Give the graphs your favorite colors.
+ Support for piecewise functions.

New commands are available!
+ Med-Med
+ randNorm
+ randBin
+ Matrix-List
+ List-Matrix
+ DrawInv
+ 2-PropZ-Interval
+ Chi²-Test
+ Chi²GOF-Test
+ LinRegT-Test
+ LinRegT-Interval
+ ANOVA

### 1.1.0 — 2020-04-09

+ With this update you can export your graphing window as an image or PDF and share it with your friends or save it for yourself. Press the "Graph" key and you will see a new small icon on the right side. You can also save or share a full-screen chart.

+ Use different History Tabs for your calculations. To add a new History tab, scroll down in the home menu and click the "+" button. This will create a new History tab. This feature is ideal if you are working on several math problems at the same time, or if you want to save your last calculations but start with a new screen.

+ iPad users can now enjoy the app in landscape mode and multitask with a split-screen. This way you can use your calculator together with another app.

+ Press and hold any key to access the second function behind it. For example, if you want to use sin-1, you can press "shift" -> "sin" or now just hold "sin" down until you see that shift commands are highlighted.

Below are even more useful and new calculator commands.
+ Draw circles with specified radius and x- and y-value.
+ seconds " key now available. Press the shift key and the " + " key to use them.
+ New angle commands for converting coordinates from Polar to Cartesian coordinates and vice versa: R►Pr(, R►Pθ(, P►Rx(, P►Ry(
+ New matrix commands: Fill (fill a list or matrix with numbers) and randM (create a random number matrix).
+ A set of new statistical tests: 2-SampZTest, 2-SampTTest, 1-PropZTest, 2-PropZTest, 2-SampZInt, 2-SampTInt, 1-PropZInt.

+ New regressions added to the STATS menu: LnReg, PwrReg, Logistic, SinReg.
+ geometpdf and geometcdf have been added to the distribution menu.

### 1.0.4 — 2020-02-11

+ Support of complex numbers
+ Many new distribution commands available
+ Four new statistical tests for you to use

### 1.0.3 — 2019-11-25

+ Fixed all bugs related to the commands: nDeriv, fnInt, Σ, and logBASE.
+ New statistical plots available: Scatter Plot, xy-Line Plot, Histogram Plot, Box Plot, and Normal Probability Plot.
+ Use InvNorm (inverse of the cumulative normal distribution function).
+ Numbers stored in alpha letters will be kept if you close the app.
+ Use the RESID list.

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All apps by Di Venisco UG (haftungsbeschrankt): https://appshunter.io/developer/1449451480

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-15.*