Triangles in Geometry vs Speed Trigonometry
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Triangle basics (Acute, Obtuse, Right Angle)
- Triangle centers (Centroid, Incenter, Orthocenter)
- Area calculations
- Triangle theorems and postulates explained
- Visual aids and images
- Review quizzes
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"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.
Speed Trigonometry
This app helps students quickly memorize the unit circle. It quizzes users on sine, cosine, tangent, and inverse trigonometric values for key angles. Developed by students for students, it's ideal for precalculus learners.
- Unit circle memorization
- Quizzes on trig values
- Focus on key angles
- Sine, cosine, tangent, inverse values
- Student-developed
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Speed Trig is the #1 app for memorizing the unit circle fast. Designed for students enrolled in Precalculus, the app quizzes you on the sine, cosine, tangent, and inverse trig values of the four main unit circle angles: π/2, π/3, π/4, and π/6. Our app was made by students, for students.
Screenshots
Verdict
The clearest difference is price: Speed Trigonometry at Free against Triangles in Geometry's $1.99. Speed Trigonometry also leads on ratings volume (5 vs 1). Triangles in Geometry's advantage is rating (5.0 vs 4.8) and device support (4 vs 2). On update cadence, ads and in-app purchases 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
Speed Trigonometry is free to download; Triangles in Geometry costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Triangles in Geometry holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Speed Trigonometry has 5 ratings behind it against 1, so its average is the more settled of the two.
Triangles in Geometry ships an update every 27 months, Speed Trigonometry every 14 months. The most recent releases landed on September 2, 2026 and August 8, 2026 respectively.
| Parameter | Triangles in Geometry | Speed Trigonometry |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 5.0 (1 ratings) — better | 4.8 (5 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 5 — better |
| Update frequency | Every 27 months | Every 14 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad |
| Requires iOS | 14.1 — better | 18.5 |
| Further details — not scored | ||
| Size | 6 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Gomathy Shankaran | Nick Petroni |
Customer experience
Triangles in Geometry
Speed Trigonometry
In-app purchases
Triangles in Geometry
No in-app purchases
Speed Trigonometry
No in-app purchases
Questions
Is Triangles in Geometry free?
Is Speed Trigonometry free?
Which has better reviews, Triangles in Geometry or Speed Trigonometry?
Do Triangles in Geometry or Speed Trigonometry have ads?
Which is updated more often, Triangles in Geometry or Speed Trigonometry?
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