Comparison

CASIO fx vs Probability Distribution

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

Head to head
About

CASIO fx

This app provides advanced mathematical and scientific calculation tools, including graphing and a computer algebra system. It offers a user interface similar to the handheld fx-CG500, with access to various applications like eActivity, Spreadsheet, Geometry, and Physium. It's designed to enhance learning for both new and experienced users.

Highlights
  • Complex calculations
  • Graph drawing
  • Computer Algebra System (CAS)
  • eActivity for worksheets
  • Spreadsheet with statistical analysis
  • Geometry with animations
  • Physium periodic table and constants
Read full description

●App Overview fx-CG500 comes equipped to perform complex calculations, draw graphs, and to use a computer algebra system (CAS) to investigate mathematics and solve problems. It has a user interface in the style of the handheld fx-CG500, a tool used in classrooms worldwide. This app will be beneficial for both new and experienced fx-CG500 users. fx-CG500 in combination with the free activities available from CASIO can help to take your study of mathematics to the next level. ●Trial Version vs Monthly Subscription Version After you register for a fx-CG500 Subscription, you will be provided access to a variety of different apps and functions that are essential for math and natural science learning and calculation. ・Applications You get access to a selection of more than 10 new apps that allow you to perform calculations using dynamic visual representations of math and natural science concepts. Four typical applications, each of which is essential for math and natural science learning and calculations, are described below. -eActivity eActivity lets you input math expressions and textual explanations in files that can then be used as worksheets. -Spreadsheet In addition to standard spreadsheet calculations, this app also provides statistical chart analysis and statistical calculation capabilities. -Geometry Geometry makes it possible for students to grasp relationships between figures using number tables and animations. -Physium Physium provides access to a periodic table and scientific constants for calculations. ・Functions You get additional access to more than 300 middle and higher grade math functions, including calculus, complex numbers, probability distribution, and more. ●Monthly Subscription ・Subscription Fee and Period A subscription costs $1.99 per month (calculated from your date of purchase), automatically renewed each month until you cancel your subscription. Billing is through your iTunes account. ・Automatic Renewal Details Subscriptions are renewed automatically as long as the subscriber does not cancel the subscription at least 24 hours before the end of the current subscription period. Billing for an automatically renewed subscription will be performed within 24 hours after the auto renewal. ・Checking Your Current Subscription Status and Canceling a Subscription (by Stopping Auto Renewal) You can check your current subscription status by navigating to the applicable page as shown below. [Settings > iTunes & App Store > Tap your Apple ID. > View Apple ID > Subscriptions] On the page that appears, you can check your next auto renewal date, and cancel or reconfigure your auto renewal. *You can also use iTunes to check your next auto renewal date, and cancel or reconfigure your auto renewal. ・Partial Month Cancellation Cancellation of a subscription partway through a month is not allowed. ・Terms of use http://edu.casio.com/software_app/app/termsofuse/en.html ・Privacy Policy http://world.casio.com/privacy/

About

Probability Distribution

This app allows users to calculate probabilities and visualize various continuous and discrete probability distributions. It supports a wide range of common distributions and plans to add more in the future.

Highlights
  • Calculate probabilities
  • Visualize distributions
  • Normal (Gaussian) distribution
  • Binomial distribution
  • Poisson distribution
  • Exponential distribution
Features
Read full description

Calculate probabilities and visualize probability distributions. Supported continuous probability distributions: - Normal (Gaussian) - t (Student's t) - Chi-Squared - F - Exponential - Gamma - Beta - Log-normal Supported discrete probability distributions: - Binomial - Poisson - Pascal - Geometric - Hypergeometric and more are coming.

Screenshots

CASIO fx4 screens
Probability Distribution4 screens

Verdict

The call

The clearest difference is rating: Probability Distribution at 4.5 against CASIO fx's 2.7. Probability Distribution also leads on update cadence (every 2 weeks vs every 6 months). CASIO fx's advantage is monetization model (free with in-app purchases vs paid) and iOS requirement (12.0 vs 16.0). On price, review sentiment, ratings volume and ads 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. CASIO fx sells 1 in-app purchase, starting at $1.99 per month and Probability Distribution 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

Probability Distribution holds the better App Store score, 4.5 against 2.7. Both are backed by a comparable volume of ratings — 9 and 15 respectively. Written reviews split almost evenly too, at 33% and 33% positive.

UpkeepUpdate frequency

CASIO fx ships an update every 6 months, Probability Distribution every 2 weeks. The most recent releases landed on June 10, 2026 and September 9, 2026 respectively.

Scorecard4 real differences · 6 level
CASIO fx versus Probability Distribution: the parameters behind the verdict, then further details
ParameterCASIO fxProbability Distribution
PriceFreeFree
Rating2.7 (9 ratings)4.5 (15 ratings) — better
Positive reviews33.3% of reviews33.3% of reviews
Number of ratings915 — better
Update frequencyEvery 6 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better16.0
Further details — not scored
Size54 MB7 MB
Age rating4+4+
DeveloperCASIO COMPUTER CO., LTD.Madiyar Aitbayev

Customer experience

CASIO fx

All ratings9 ratings
Positive33.3%
Neutral11.1%
Negative55.6%
Written reviews6 reviews
Positive33.3%
Neutral16.7%
Negative50.0%

Probability Distribution

All ratings15 ratings
Positive86.7%
Neutral0.0%
Negative13.3%
Written reviews3 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

In-app purchases

1 purchases

CASIO fx

Subscriptions1
  • fx-CG500 1 Month Subscription$1.991 Month
1 purchases

Probability Distribution

One-time1
  • Unlock All Distributions$2.99

Questions

Is CASIO fx free?
CASIO fx is free to download, with in-app purchases available.
Is Probability Distribution free?
Probability Distribution is free to download, with in-app purchases available.
Which has better reviews, CASIO fx or Probability Distribution?
Probability Distribution is rated higher. CASIO fx averages 2.7 out of 5 from 9 ratings, while Probability Distribution averages 4.5 from 15 ratings.
Do CASIO fx or Probability Distribution have ads?
Neither CASIO fx nor Probability Distribution shows ads.
Which is updated more often, CASIO fx or Probability Distribution?
CASIO fx ships an update every 6 months, and Probability Distribution every 2 weeks. Most recently, CASIO fx was updated on June 10, 2026 and Probability Distribution on September 9, 2026.

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