# Triangles in Geometry vs Rival Edge

The clearest difference is update cadence: Rival Edge at every 6 months against Triangles in Geometry's every 27 months. Triangles in Geometry's advantage is price ($1.99 vs $3.99) and device support (4 vs 2). On rating, ratings volume, ads and in-app purchases there is nothing between them.

Triangles in Geometry costs $1.99 and Rival Edge $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Triangles in Geometry against 5.0 for Rival Edge. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Triangles in Geometry ships an update every 27 months, Rival Edge every 6 months. The most recent releases landed on October 8, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Triangles in Geometry | Rival Edge |
| --- | --- | --- |
| Price | **$1.99** | $3.99 |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/triangles-in-geometry/id1500084079/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/rival-edge/id6759164956/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 27 months | **Every 6 months** |
| Monetization | Paid | Paid |
| Size | 6 MB | 7 MB |
| Requires iOS | **14.1** | 26.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Gomathy Shankaran](https://appshunter.io/developer/503956143) | [Vladimir Rodzaevskiy](https://appshunter.io/developer/1838906311) |

## What reviewers say

### Triangles in Geometry

[App page](https://appshunter.io/ios/app/triangles-in-geometry/id1500084079)

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:** Vision Pro support

**In-app purchases:** none


### Rival Edge

[App page](https://appshunter.io/ios/app/rival-edge/id6759164956)

Master strategic decision-making with real-life scenarios and Nobel Prize-winning game theory concepts. Learn practical rules for everyday dilemmas, track your progress, and gain an edge in negotiations and relationships.

**Highlights:** Interactive real-life scenarios, 12 essential game theory concepts, 20 practical daily rules, Progress tracking with XP and ranks, Payoff matrices for decision math, Offline functionality, Supports 6 languages

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Triangles in Geometry free?

Triangles in Geometry costs $1.99, with no in-app purchases.

### Is Rival Edge free?

Rival Edge costs $3.99, with no in-app purchases.

### Which has better reviews, Triangles in Geometry or Rival Edge?

Triangles in Geometry and Rival Edge are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Triangles in Geometry or Rival Edge have ads?

Neither Triangles in Geometry nor Rival Edge shows ads.

### Which is updated more often, Triangles in Geometry or Rival Edge?

Triangles in Geometry ships an update every 27 months, and Rival Edge every 6 months. Most recently, Triangles in Geometry was updated on October 8, 2026 and Rival Edge on October 4, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*