# Polyhedron and Polyhedra Vol.2 vs Interactive Solar System

The clearest difference is update cadence: Interactive Solar System at fortnightly against Polyhedron and Polyhedra Vol.2's every 28 months. Interactive Solar System also leads on price ($1.99 vs $2.99). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Polyhedron and Polyhedra Vol.2 costs $2.99 and Interactive Solar System $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Polyhedron and Polyhedra Vol.2 ships an update every 28 months, Interactive Solar System fortnightly. The most recent releases landed on September 23, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Polyhedron and Polyhedra Vol.2 | Interactive Solar System |
| --- | --- | --- |
| Price | $2.99 | **$1.99** |
| Rating | **[4.3 (3 ratings)](https://appshunter.io/ios/app/polyhedron-and-polyhedra-vol2/id1073494585/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 28 months | **Fortnightly** |
| Monetization | Paid | — |
| Size | 5 MB | 52 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPad | **iPad, Apple TV** |
| Age rating | 4+ | 4+ |
| Developer | [Masahiko Fukuyama](https://appshunter.io/developer/595177290) | [Ventura Educational Systems](https://appshunter.io/developer/371324172) |

## What reviewers say

### Polyhedron and Polyhedra Vol.2

[App page](https://appshunter.io/ios/app/polyhedron-and-polyhedra-vol2/id1073494585)

Explore and learn about complex 3D mathematical solids, including star polyhedra and their compounds. Interact with these abstract shapes through intuitive touch gestures, customize their appearance with various colors and patterns, and view them from any angle.

**Highlights:** Interactive 3D model rotation, zoom, and pan, Toggle visibility of faces and components, Adjustable edge thickness and color, Extensive library of polyhedral compounds, Customizable face color patterns, Access to Wikipedia for related information, Save PNG images of models

**Features:** macOS Compatibility

**In-app purchases:** none


### Interactive Solar System

[App page](https://appshunter.io/ios/app/interactive-solar-system/id1240878228)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Polyhedron and Polyhedra Vol.2 free?

Polyhedron and Polyhedra Vol.2 costs $2.99, with no in-app purchases.

### Is Interactive Solar System free?

Interactive Solar System costs $1.99, with no in-app purchases.

### Do Polyhedron and Polyhedra Vol.2 or Interactive Solar System have ads?

Neither Polyhedron and Polyhedra Vol.2 nor Interactive Solar System shows ads.

### Which is updated more often, Polyhedron and Polyhedra Vol.2 or Interactive Solar System?

Polyhedron and Polyhedra Vol.2 ships an update every 28 months, and Interactive Solar System fortnightly. Most recently, Polyhedron and Polyhedra Vol.2 was updated on September 23, 2026 and Interactive Solar System on September 18, 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.*