# ODYSSEY VSEPR Theory vs Singularity Learn

The clearest difference is price: Singularity Learn at Free against ODYSSEY VSEPR Theory's $3.99. Singularity Learn also leads on update cadence (monthly vs every 14 months) and device support (3 vs 1). ODYSSEY VSEPR Theory's advantage is iOS requirement (9.0 vs 15.1). On ads and in-app purchases there is nothing between them.

Singularity Learn is free to download; ODYSSEY VSEPR Theory costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ODYSSEY VSEPR Theory ships an update every 14 months, Singularity Learn monthly. The most recent releases landed on October 1, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | ODYSSEY VSEPR Theory | Singularity Learn |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| 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 | **Monthly** |
| Monetization | Paid | — |
| Size | 23 MB | 37 MB |
| Requires iOS | **9.0** | 15.1 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Wavefunction, Inc](https://appshunter.io/developer/534726809) | [Reasonify](https://appshunter.io/developer/1867414043) |

## 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


### Singularity Learn

[App page](https://appshunter.io/ios/app/singularity-learn/id6757517793)

**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 Singularity Learn free?

Singularity Learn is free to download, with no in-app purchases.

### Do ODYSSEY VSEPR Theory or Singularity Learn have ads?

Neither ODYSSEY VSEPR Theory nor Singularity Learn shows ads.

### Which is updated more often, ODYSSEY VSEPR Theory or Singularity Learn?

ODYSSEY VSEPR Theory ships an update every 14 months, and Singularity Learn monthly. Most recently, ODYSSEY VSEPR Theory was updated on October 1, 2026 and Singularity Learn on October 16, 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.*