Comparison

Pre vs Simultaneous Equations

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

Head to head
About

Pre

Features
Read full description

Auto-renewable subscription Pre-Algebra Fundamentals comes with a 7-day free trial. After this you will be charged $4.99 a month and you can cancel anytime. Your subscription will be charged to your iTunes account at confirmation of purchase and will automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. You can manage your subscription by visiting your iTunes Account Settings. Privacy policy: https://www.mathgalaxy.com/FQ3_Menu/FQ3_PreAlgebra_Privacy.html Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Math Galaxy Pre-Algebra Fundamentals is like having an interactive textbook, with explanations, practice, games, and videos that cover all topics found in middle school math: decimals negative numbers (integers) absolute value exponents roots scientific and metric notation and operations order of operations factors and prime numbers 1 & 2-step equations systems of equations slopes and linear equations ratios & proportions similar figures direct & inverse variation percents geometry, including length, area, volume, weight, lines, angles & polygons pythagoras & right triangles basic trigonometry graphs frequency tables, mean (average) & median stem-and-leaf plots box-and-whisker plots probability patterns and sequences The concepts are presented in bite-size pieces and there is an unlimited number of practice problems, with numbers chosen randomly. By solving problems students earn robots to use in a maze game called the Labyrinth.

About

Simultaneous Equations

This interactive tool helps students visualize and understand simultaneous equations. It demonstrates graphical, substitution, and elimination methods for solving them, with a quiz to test comprehension and lessons on real-world applications.

Highlights
  • Graphical representation of equations
  • Substitution method demonstration
  • Elimination method demonstration
  • Interactive equation definition
  • Quiz for understanding assessment
  • Illustrated lessons with real-world examples
Features
Read full description

Simultaneous Equations are a set of equations with two or more variables for which there are values that can satisfy all the equations simultaneously. The Simultaneous Equations app is an interactive tool designed to help teachers introduce the concepts related to simultaneous equations and demonstrates two methods for solving them. It provides students with an interactive learning device to help them better understand these important concepts. While using the app students set up the definitions of two lines. The lines are plotted on a coordinate grid. The coordinate pair for the intersection of the two lines represents the solution for the simultaneous equations. The Elimination and Substitution Methods are demonstrated. Designed in California by Dr. Fred Ventura, Simultaneous Equations is one of the apps in the Math Power Series. Simultaneous Equations turns your iPad into a mathematical playground for introducing the coordinate plane, ordered pairs, slope, y-intercept, and the graphical, substitution and elimination methods for solving simultaneous equations. The primary objective for this app is to provide a method for students to visualize simultaneous equations graphed on a coordinate grid and to learn the substitution and elimination methods for finding a solution algebraically. Tap the table icon and begin defining an equation by using a slider to specify the slope and y-intercept of a line. Tap the plot button to graph the equation. Use the same procedure to define a second equation. Tap either the substitution or elimination icon to open a note and see the algebraic steps involved in finding the solution. Tap the question mark icon to start the quiz and measure a students understanding using randomly generated problems. Tap the notebook icon to begin reading an illustrated lesson that includes information about real-world applications for simultaneuos equations.. Simultaneous Equations turns your iPad into a power tool for teaching the concepts related to solving simultaneous equations using the graphical, substitution and elimination methods. Use Simultaneous Equations to create a presentation while illustrating and discussing the key principles of analytic geometry. Simultaneous Equation is perfect for algebra students in middle school and high school classrooms. Enrich your mathematics curriculum with the power of Simultaneous Equations!

Screenshots

Pre4 screens

Verdict

The call

The clearest difference is price: Pre at Free against Simultaneous Equations's $1.99. Pre also leads on device support (3 vs 1). Simultaneous Equations's advantage is in-app purchases (none vs 1) and iOS requirement (12.0 vs 15.0). On update cadence and ads there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Pre is free to download; Simultaneous Equations costs $1.99 up front. Pre sells 1 in-app purchase, starting at $4.99 per month. Simultaneous Equations asks for nothing beyond the download.

UpkeepUpdate frequency

Pre ships an update every 31 months, Simultaneous Equations every 36 months. The most recent releases landed on September 15, 2026 and September 7, 2026 respectively.

Scorecard4 real differences ยท 4 level
Pre versus Simultaneous Equations: the parameters behind the verdict, then further details
ParameterPreSimultaneous Equations
PriceFree โ€” better$1.99
Positive reviewsโ€”0.0% of reviews
Update frequencyEvery 31 months โ€” betterEvery 36 months
AdsNoNo
In-app purchasesYesNo โ€” better
Monetizationโ€”Paid
DevicesiPhone, iPad, iPod โ€” betteriPad
Requires iOS15.012.0 โ€” better
Further details โ€” not scored
Size296 MB50 MB
Age rating4+4+
DeveloperMath GalaxyVentura Educational Systems

In-app purchases

1 purchases

Pre

Subscriptions1
  • PreAlgebra - Math Galaxy7 Days trial$4.991 Month
None

Simultaneous Equations

No in-app purchases

Questions

Is Pre free?
Pre is free to download, with in-app purchases available.
Is Simultaneous Equations free?
Simultaneous Equations costs $1.99, with no in-app purchases.
Do Pre or Simultaneous Equations have ads?
Neither Pre nor Simultaneous Equations shows ads.
Which is updated more often, Pre or Simultaneous Equations?
Pre ships an update every 31 months, and Simultaneous Equations every 36 months. Most recently, Pre was updated on September 15, 2026 and Simultaneous Equations on September 7, 2026.

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