# ODYSSEY VSEPR Theory vs Simple Orbit Simulator

The clearest difference is update cadence: Simple Orbit Simulator at every 5 days against ODYSSEY VSEPR Theory's every 14 months. Simple Orbit Simulator also leads on price ($0.99 vs $3.99). ODYSSEY VSEPR Theory's advantage is iOS requirement (9.0 vs 18.2). On ads, in-app purchases and device support there is nothing between them.

ODYSSEY VSEPR Theory costs $3.99 and Simple Orbit Simulator $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ODYSSEY VSEPR Theory ships an update every 14 months, Simple Orbit Simulator every 5 days. The most recent releases landed on October 17, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | ODYSSEY VSEPR Theory | Simple Orbit Simulator |
| --- | --- | --- |
| Price | $3.99 | **$0.99** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/odyssey-vsepr-theory/id869643629/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 5 days** |
| Monetization | Paid | — |
| Size | 23 MB | 9 MB |
| Requires iOS | **9.0** | 18.2 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Wavefunction, Inc](https://appshunter.io/developer/534726809) | [Bratislav Ljubisic](https://appshunter.io/developer/570434691) |

## What reviewers say

### ODYSSEY VSEPR Theory

[App page](https://appshunter.io/ios/app/odyssey-vsepr-theory/id869643629)

Explore molecular shapes and VSEPR theory with interactive 3D models. Manipulate molecules, measure bond angles, and test your knowledge with quizzes. Ideal for visual learners in introductory chemistry.

**Highlights:** Interactive 3D molecular models, Adjustable model styles, Measure bond lengths and angles, Lone pair and dipole moment visualization, Multiple-choice quizzes, Glossary and comments section

**In-app purchases:** none


### Simple Orbit Simulator

[App page](https://appshunter.io/ios/app/simple-orbit-simulator/id6762567160)

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

**In-app purchases:** none


## Frequently asked questions

### Is ODYSSEY VSEPR Theory free?

ODYSSEY VSEPR Theory costs $3.99, with no in-app purchases.

### Is Simple Orbit Simulator free?

Simple Orbit Simulator costs $0.99, with no in-app purchases.

### Do ODYSSEY VSEPR Theory or Simple Orbit Simulator have ads?

Neither ODYSSEY VSEPR Theory nor Simple Orbit Simulator shows ads.

### Which is updated more often, ODYSSEY VSEPR Theory or Simple Orbit Simulator?

ODYSSEY VSEPR Theory ships an update every 14 months, and Simple Orbit Simulator every 5 days. Most recently, ODYSSEY VSEPR Theory was updated on October 17, 2026 and Simple Orbit Simulator on October 26, 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.*