# Triangles in Geometry vs Chemistry Pro

The clearest difference is price: Chemistry Pro at Free against Triangles in Geometry's $1.99. Chemistry Pro also leads on update cadence (every 2 months vs every 27 months) and ratings volume (8 vs 1). Triangles in Geometry's advantage is rating (5.0 vs 4.3) and in-app purchases (none vs 5). On device support there is nothing between them.

Chemistry Pro is free to download; Triangles in Geometry costs $1.99 up front. Chemistry Pro sells 5 in-app purchases, starting at $4.99 per 7 days. Triangles in Geometry asks for nothing beyond the download.

Triangles in Geometry holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Chemistry Pro has 8 ratings behind it against 1, so its average is the more settled of the two.

Triangles in Geometry ships an update every 27 months, Chemistry Pro every 2 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | Triangles in Geometry | Chemistry Pro |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/triangles-in-geometry/id1500084079/reviews)** | [4.3 (8 ratings)](https://appshunter.io/ios/app/chemistry-pro/id1588453081/reviews) |
| Number of ratings | 1 | **8** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 27 months | **Every 2 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 6 MB | 40 MB |
| Requires iOS | 14.1 | **12.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gomathy Shankaran](https://appshunter.io/developer/503956143) | [Ali Umer](https://appshunter.io/developer/1584417594) |

## 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


### Chemistry Pro

[App page](https://appshunter.io/ios/app/chemistry-pro/id1588453081)

Learn chemistry from basic to advanced topics with offline access. This app offers hundreds of lessons in English, covering chemistry in everyday life. Unlock premium features and advanced lessons through in-app purchases or subscriptions.

**Highlights:** Hundreds of chemistry topics, Offline access, Learn from basics to advanced, Chemistry in life lessons, Review mode, In-app purchases for premium content

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chemistry | $4.99 | per 7 days |
| Chemistry | $6.99 | per month |
| Chemistry | $29.99 | per year |
| Chemistry | $2.99 | one-time |
| Chemistry | $49.99 | one-time |


## Frequently asked questions

### Is Triangles in Geometry free?

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

### Is Chemistry Pro free?

Chemistry Pro is free to download, with in-app purchases available.

### Which has better reviews, Triangles in Geometry or Chemistry Pro?

Triangles in Geometry is rated higher. Triangles in Geometry averages 5.0 out of 5 from 1 ratings, while Chemistry Pro averages 4.3 from 8 ratings.

### Do Triangles in Geometry or Chemistry Pro have ads?

Chemistry Pro shows ads; Triangles in Geometry does not.

### Which is updated more often, Triangles in Geometry or Chemistry Pro?

Triangles in Geometry ships an update every 27 months, and Chemistry Pro every 2 months. Most recently, Triangles in Geometry was updated on November 3, 2026 and Chemistry Pro on November 3, 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.*