Comparison

Pre vs Triangles in Geometry

Price, ratings, monetisation and update history for both apps, side by side — 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

Triangles in Geometry

Learn the fundamentals of triangles, including types, centers, and area calculations. This app explains theorems and postulates with visual aids and includes review quizzes to test understanding.

Highlights
  • Triangle basics (Acute, Obtuse, Right Angle)
  • Triangle centers (Centroid, Incenter, Orthocenter)
  • Area calculations
  • Triangle theorems and postulates explained
  • Visual aids and images
  • Review quizzes
Features
Read full description

"Triangles in Geometry" is an educational app that describes the triangle basics - (Acute, Obtuse, Right Angle) and then progresses to explain various centers in a triangle - (Centroid, Incenter, Orthocenter) and Area. The app also summarizes and explains with images, triangles Theorems, and Postulates ( Proofs). Review questions (Quiz) at the end of the section has a few problems based on the triangle Theorems and Postulates.

Screenshots

Pre4 screens
Triangles in Geometry4 screens

Verdict

The call

The clearest difference is price: Pre at Free against Triangles in Geometry's $1.99. Triangles in Geometry's advantage is in-app purchases (none vs 1). On update cadence, ads, 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

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

UpkeepUpdate frequency

Pre ships an update every 31 months, Triangles in Geometry every 27 months. The most recent releases landed on October 24, 2026 and October 16, 2026 respectively.

Scorecard2 real differences · 7 level
Pre versus Triangles in Geometry: the parameters behind the verdict, then further details
ParameterPreTriangles in Geometry
PriceFree — better$1.99
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 31 monthsEvery 27 months — better
AdsNoNo
In-app purchasesYesNo — better
Monetization—Paid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS15.014.1 — better
Further details — not scored
Size296 MB6 MB
Age rating4+4+
DeveloperMath GalaxyGomathy Shankaran

In-app purchases

1 purchases

Pre

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

Triangles in Geometry

No in-app purchases

Questions

Is Pre free?
Pre is free to download, with in-app purchases available.
Is Triangles in Geometry free?
Triangles in Geometry costs $1.99, with no in-app purchases.
Do Pre or Triangles in Geometry have ads?
Neither Pre nor Triangles in Geometry shows ads.
Which is updated more often, Pre or Triangles in Geometry?
Pre ships an update every 31 months, and Triangles in Geometry every 27 months. Most recently, Pre was updated on October 24, 2026 and Triangles in Geometry on October 16, 2026.

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