Comparison

GraphNCalc84 vs Ruby Compiler

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

Head to head
About

GraphNCalc84

This app provides a comprehensive graphing and scientific calculator experience on your mobile device. It allows you to graph multiple functions, solve equations, perform statistical analysis, and work with matrices, all with a familiar interface. Ideal for students and anyone needing advanced calculation capabilities on the go.

Highlights
  • Graph multiple functions with different colors
  • Solve equations and find integrals
  • Perform advanced scientific calculations
  • Work with matrices and solve linear systems
  • Conduct statistical analysis and regressions
  • Enter calculations in natural textbook format
Features
Currently charting
Read full description

A full-featured graphing calculator: Graph and investigate functions, solve equations, work with statistics, distributions, matrices and much more. FIVE REASONS WHY YOU NEED THIS APP 1. Keyboard and command syntax similar to physical graphing calculators -> No need to learn a new calculator. 2. Powerful emulator like Wabbitemu Calculator -> No more waiting to graph functions compared to slow physical handhelds. 3. Enter fractions, equations or functions in the same way as you would write them on paper. 4. Never forget your calculator at home! It's always ready on your iPhone & iPad, and it weighs nothing. 5. High-resolution graphs FULL GRAPHING CALCULATOR • Graph more than ten functions at once, each with a different color • Add Lines, Horizontals, Verticals, and Tangents to the graph • Use your finger or the arrow keys to trace the coordinates of your functions • Calculate the Zero, Minimum, Maximum, Intersection, and Derivative • Find integrals and color the area under the function • Set the X and Y coordinates of the graphing window; zoom in and out with your fingers ADVANCED SCIENTIFIC CALCULATOR • Enter calculations in natural textbook format • Includes all basic arithmetic (+, -, x, ÷, ^, ², √, π, …) • Use advanced functions like sin, cos, tan, e, ln, Σ, ... • Scroll your calculation history and modify existing calculations with one tab • Store and recall variables • Quadratic Equation Solver MATRIX CALCULATOR • Work with matrices the easy way -> store them or enter them directly on the calculator interface • Do basic matrix arithmetic operations like addition, subtraction, multiplication 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 STATISTICS AND LISTS • Use lists for all basic and trigonometric ​operations • Enter lists using the Statistics List Editor or use curly brackets on the main screen • Perform 1- and 2- Variable Stats • Investigate your lists: min, max, mean, median, sum, product, standard deviation, and variance.​ • Do regressions with best-fit lines: LinReg, QuadReg, CubicReg, QuartReg, ExpReg • Work with distributions: Normal, Poisson and Binomial TUTORIAL AND CATALOG • Easy to understand tutorial to get started • Full Catalog of all commands with syntax, example, and possible error messages • Tab on highlighted math terms to read on point definitions PERFECT FOR HIGH SCHOOL & COLLEGE STUDENTS • Recommended by teachers to use in math classes • Pre-Algebra, Algebra 1 & 2 • Pre-Calculus, Calculus • Statistics • Permitted on SAT/ ACT/ AP (your phone might not be permitted, but you can use the app for homework and borrow an actual calculator from your school for the test)

About

Ruby Compiler

Features
Read full description

Ruby Compiler is an Advanced IDE enabling you to compile Ruby Programs on your Mobile Phone for Free. It comes with a code editor with in-built syntax highlighting capabilities. Ruby Compiler is - Free with no hidden charges! - Ad-Free! - Available for all platforms! Features : 1. Compile & Run - Compile & Run Ruby Programs 2. Code Editing & Syntax Highlighting - Enables you to edit code and automatically detects and highlights syntax 3. Exercise Questions - Exercise questions to help you improve your knowledge 4. Programs with Code - All the general DSA programs with code 5. Fun Facts - Some fun facts about programming and computer science This app is brought to you by the company OnePercent, based in Bangalore, India. Website: www.OnePercent.club LinkedIn: www.Linkedin.Com/Company/Onepercent-Club/

Screenshots

GraphNCalc844 screens
Ruby Compiler4 screens

Verdict

The call

The clearest difference is price: Ruby Compiler at Free against GraphNCalc84's $9.99. GraphNCalc84's advantage is update cadence (fortnightly vs every 2 months) and chart position (#178 vs unranked). On ads, in-app purchases, device support and iOS requirement 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

Ruby Compiler is free to download; GraphNCalc84 costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

GraphNCalc84 ships an update fortnightly, Ruby Compiler every 2 months. The most recent releases landed on October 6, 2026 and October 1, 2026 respectively.

Scorecard3 real differences · 8 level
GraphNCalc84 versus Ruby Compiler: the parameters behind the verdict, then further details
ParameterGraphNCalc84Ruby Compiler
Price$9.99Free — better
Rating4.0 (1 ratings) — better—
Positive reviews39.3% of reviews—
Number of ratings1 — better—
Update frequencyFortnightly — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
Best chart rank#178 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.012.0 — better
Further details — not scored
Size41 MB28 MB
Age rating4+4+
DeveloperDi Venisco UG (haftungsbeschrankt)OnePercent

Bugs and requests

GraphNCalc84

Reported bugs

4 issues
  • Cursor/input issues
  • Crashes and freezes
  • Inaccurate calculation results
  • Missing key functions

Requested features

5 requests
  • Add support for more advanced functions (stats, distributions, etc.)
  • Improve stability and reduce crashes/freezes
  • Enhance cursor/input responsiveness
  • Add iPad-specific features (landscape mode, multitasking)
  • Provide a more complete TI-84 emulation

Ruby Compiler

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

GraphNCalc84

No in-app purchases

None

Ruby Compiler

No in-app purchases

Questions

Is GraphNCalc84 free?
GraphNCalc84 costs $9.99, with no in-app purchases.
Is Ruby Compiler free?
Ruby Compiler is free to download, with no in-app purchases.
Do GraphNCalc84 or Ruby Compiler have ads?
Neither GraphNCalc84 nor Ruby Compiler shows ads.
Which is updated more often, GraphNCalc84 or Ruby Compiler?
GraphNCalc84 ships an update fortnightly, and Ruby Compiler every 2 months. Most recently, GraphNCalc84 was updated on October 6, 2026 and Ruby Compiler on October 1, 2026.

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