Comparison

Calculate84 Plus vs IntroStat

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Calculate84 Plus

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
Read full description

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

About

IntroStat

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
Read full description

IntroStat is a probability and statistics calculator. It is the perfect learning tool for an introductory statistics course. Use it to perform any of your statistics calculation needs. IntroStat also includes a statistics textbook complete with formulas, exercise problems, examples, and more. FREE IN THE CALCULATOR: • Enter & Save Datasets • Generate Summary Statistics • Calculate z-Scores • Draw Boxplots & Histograms • Visualize Key Concepts like The Empirical Formula • Plot Discrete and Continuous Random Variables • Perform Probability Calculations • Conduct Hypothesis Testing • Compute Confidence Intervals • Lookup Critical Values of Distributions • Perform Simple Regression Analysis • ANOVA, Chi-Square, & F-Tests • Introductory Statistics Textbook Upgrade as a Premium User to unlock: • Dark Mode • 12 Color Themes • Zoom • Custom Decimal Precision • Comma Display • No Ads Have any questions? Please reach out to us via email at IntroStatApp@gmail.com. End User Licensing Agreement: https://www.introstatapp.com/user-agreement Privacy Policy: https://www.introstatapp.com/privacy-policy

Screenshots

Calculate84 Plus4 screens
IntroStat4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard5 real differences · 5 level
Calculate84 Plus versus IntroStat: the parameters behind the verdict, then further details
ParameterCalculate84 PlusIntroStat
PriceFreeFree
Rating4.5 (305 ratings)4.9 (24 ratings) — better
Positive reviews64.0% of reviews92.3% of reviews — better
Number of ratings305 — better24
Update frequencyEvery 2 months — betterEvery 3 months
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.011.0 — better
Further details — not scored
Size33 MB38 MB
Age rating4+4+
DeveloperDi Venisco UG (haftungsbeschrankt)Zhiyi Zhang

Customer experience

Calculate84 Plus

All ratings305 ratings
Positive87.2%
Neutral4.3%
Negative8.5%
Written reviews25 reviews
Positive64.0%
Neutral12.0%
Negative24.0%

IntroStat

All ratings24 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews13 reviews
Positive92.3%
Neutral0.0%
Negative7.7%

Bugs and requests

Calculate84 Plus

Reported bugs

5 issues
  • 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

10 requests
  • Dark mode
  • Numeric solver (free)
  • 2nd function
  • Chinese language support
  • Tutorial videos
Show 5 more
  • Settings button (color theme, subscription details)
  • Standard calculator mode
  • Show premium features in description
  • Ability to create programs
  • More TI-84 Plus CE features

IntroStat

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

Calculate84 Plus

Subscriptions8
  • HyperCalc - Monthly$2.991 Month
  • HyperCalc - Monthly7 Days trial$2.991 Month
  • HyperCalc - Monthly7 Days trial$4.991 Month
Show 5 more
  • HyperCalc - Monthly$4.991 Month
  • HyperCalc - Yearly$14.991 Year
  • HyperCalc - Yearly7 Days trial$14.991 Year
  • HyperCalc - Yearly7 Days trial$19.991 Year
  • HyperCalc - Yearly$19.991 Year
One-time2
  • HyperCalc - Lifetime$29.99
  • HyperCalc - Lifetime$39.99
1 purchases

IntroStat

One-time1
  • IntroStat Premium Features$4.99

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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