Comparison

Quick Graph vs Linear Equations Calculator

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

Head to head
About

Quick Graph

This powerful graphing calculator leverages multitouch displays for 2D and 3D equation visualization. It supports various coordinate systems and offers features like equation editing, evaluation, and a library for storing common formulas. Advanced features are available through an in-app purchase.

Highlights
  • 2D and 3D graphing
  • Multiple coordinate systems
  • Equation evaluation
  • Equation library
  • Copy/email/save graphs
  • Implicit and inequality graphing (advanced)
Features
Read full description

Quick Graph is a powerful, high-quality graphing calculator for iPhone and iPad, in 2D and 3D. "The app you need to survive the next semester." -- Gizmodo Type an equation and see it right away, written in math notation and drawn in a graph you can move, zoom and rotate with your fingers. Explicit and implicit equations and inequalities, in cartesian, polar, cylindrical and spherical coordinates, all fast and beautiful. What's inside: - 2D and 3D graphs with a clean, full-screen design. - 3D surfaces drawn with Metal: smooth shading, transparency, wireframe, and zoom that fills the screen. - Adaptive 2D drawing with exact roots and extrema and clean asymptotes. - Equation groups: show, hide and move several equations together, with a shared n. - Annotations with Apple Pencil or your finger on 2D graphs. - A math keyboard with functions, derivatives and more on each key. - Hyperbolic and inverse functions, min, max, if, derivatives. - Axes in decimals or multiples of π, and independent zoom on each 2D axis. - A library of example and saved equations, including groups. - Share as a link, image or text; copy and paste equations; drag them between windows. - Light or dark appearance, multiple windows on iPad, and support for iPhone Duo. Up to 6 equations can be shown at once in the free version. The Advanced Features, a single one-time purchase with no subscription, add: - More than 6 equations. - 2D and 3D implicit equations and inequalities. - The variable n with a slider, to animate your graphs. - 2D tracing with roots, extrema and intersections. - Value table. - External display support. - Decimal / π axes and polar range settings. No ads, no subscription. Please visit the website for more details.

About

Linear Equations Calculator

This educational app solves linear equations with detailed step-by-step solutions and visual plots. It supports various input methods, including points and slopes, and saves all calculations in a history log for easy access and sharing.

Highlights
  • Step-by-step linear equation solving
  • Graphical plotting of results
  • Calculation history log
  • Supports various input methods (points, slope)
  • Decimal and fraction input support
  • Solution sharing functionality
Features
Read full description

Get your homework done instantly. Prepare for exams without stress. Free, complete step-by-step solutions. Enter your values and compute linear equations from slope, intercept, or two points – including graphical visualization. HOW IT WORKS Enter your values in the appropriate fields and get started. You’ll receive the solution instantly and can share it with friends or classmates. YOUR PERSONAL DATA We don’t need it. Only anonymized data is collected, for example: - which features are used - how many solutions are generated This helps us improve. No conclusions can be drawn about you. COSTS Everything is free to use. 24/7 access to your solutions. All solution steps are always fully shown. If you need many solutions in a short time, various purchase options are available. EXTRAS - Overview of input options - Curated learning videos - Feedback for incorrect inputs - Manage your own solutions - Introduction to the app CONTACT Questions and feedback via Discord or directly in the app review.

Screenshots

Quick Graph4 screens
Linear Equations Calculator4 screens

Verdict

The call

The clearest difference is rating: Quick Graph at 4.6 against Linear Equations Calculator's 4.1. Quick Graph also leads on review sentiment (94% vs 75%) and ratings volume (423 vs 28). Linear Equations Calculator's advantage is update cadence (every 3 weeks vs every 5 months) and iOS requirement (15.0 vs 17.0). On price, ads, 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. Quick Graph sells 2 one-off in-app purchases and Linear Equations Calculator sells 8 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Quick Graph holds the better App Store score, 4.6 against 4.1. That said, the two scores are not equally well evidenced: Quick Graph has 423 ratings behind it against 28, so its average is the more settled of the two. Written reviews point the same way: 94% of Quick Graph's written reviews are positive against 75% of Linear Equations Calculator's.

UpkeepUpdate frequency

Quick Graph ships an update every 5 months, Linear Equations Calculator every 3 weeks. The most recent releases landed on October 31, 2026 and November 3, 2026 respectively.

Scorecard5 real differences · 5 level
Quick Graph versus Linear Equations Calculator: the parameters behind the verdict, then further details
ParameterQuick GraphLinear Equations Calculator
PriceFreeFree
Rating4.6 (423 ratings) — better4.1 (28 ratings)
Positive reviews93.6% of reviews — better75.0% of reviews
Number of ratings423 — better28
Update frequencyEvery 5 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size6 MB180 MB
Age rating4+4+
DeveloperKZ LabsGlindemann, Sennoun, Langer GbR

Customer experience

Quick Graph

All ratings423 ratings
Positive90.8%
Neutral3.1%
Negative6.1%
Written reviews1,304 reviews
Positive93.6%
Neutral3.2%
Negative3.1%

Linear Equations Calculator

All ratings28 ratings
Positive78.6%
Neutral0.0%
Negative21.4%
Written reviews16 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

Bugs and requests

Quick Graph

Reported bugs

5 issues
  • Crashes when trying to save to photos
  • Equations not visible when projecting to external display
  • Incorrect rendering of some functions like y=tan(x)*x
  • Degradation in 3D plot quality when zooming out
  • Equations not working as expected for simple cases like x+y=0

Requested features

25 requests
  • Display 3D surface with variable opacity or as wireframe
  • Ability to define and display functions over a certain interval
  • Ability to define and display parametric equations
  • Ability to move cursor around within a function while typing
  • Ability to animate equations with a parameter
Show 20 more
  • Ability to graph complex functions
  • Ability to graph vector fields and slope fields
  • Ability to graph parametric surfaces
  • Ability to add vectors of given magnitude and direction
  • Ability to add points in space using different coordinate systems
  • Ability to add text labels in 3D space
  • Ability to select and remove parts of 3D surfaces
  • Ability to sum n terms of series
  • Ability to graph inequalities
  • Ability to graph Euler's formula
  • Ability to identify coordinates of intersections and zeroes
  • Ability to move and rotate the 3D axes
  • Ability to change line weight and style for each function
  • Ability to define and display functions in polar coordinates
  • Ability to graph complex functions in the complex plane
  • Ability to graph parametric equations in 3D
  • Ability to graph vector fields
  • Ability to display equations of asymptotes or tangents on polar graphs
  • Ability to change the window/domain and range of the graph
  • Ability to change the frequency of points calculated

Linear Equations Calculator

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

Quick Graph

One-time2
  • Advanced Features$1.99
  • Buy Us a Coffee$1.99
8 purchases

Linear Equations Calculator

One-time8
  • +30 User Tokens$0.29
  • +1 Convenience Token / 6h, max. +2$0.59
  • +2 Convenience Tokens / 6h, max. +4$0.99
Show 5 more
  • +150 User Tokens$0.99
  • +300 User Tokens$1.49
  • +4 Convenience Tokens / 6h, max. +8$1.59
  • Remove Ads$1.99
  • Lifetime Access$1.99

Questions

Is Quick Graph free?
Quick Graph is free to download, with in-app purchases available.
Is Linear Equations Calculator free?
Linear Equations Calculator is free to download, with in-app purchases available.
Which has better reviews, Quick Graph or Linear Equations Calculator?
Quick Graph is rated higher. Quick Graph averages 4.6 out of 5 from 423 ratings, while Linear Equations Calculator averages 4.1 from 28 ratings.
Do Quick Graph or Linear Equations Calculator have ads?
Neither Quick Graph nor Linear Equations Calculator shows ads.
Which is updated more often, Quick Graph or Linear Equations Calculator?
Quick Graph ships an update every 5 months, and Linear Equations Calculator every 3 weeks. Most recently, Quick Graph was updated on October 31, 2026 and Linear Equations Calculator on November 3, 2026.

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