# Molecule World vs Ivy Notes

The clearest difference is price: Molecule World at Free against Ivy Notes's $3.99. Ivy Notes's advantage is update cadence (every 3 weeks vs every 2 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Molecule World is free to download; Ivy Notes costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Molecule World ships an update every 2 months, Ivy Notes every 3 weeks. The most recent releases landed on September 20, 2026 and August 26, 2026 respectively.

## The numbers

| Metric | Molecule World | Ivy Notes |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/molecule-world/id863565223/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Paid | — |
| Size | 8 MB | 6 MB |
| Requires iOS | 17.6 | 17.6 |
| Devices | iPhone, iPad, Mac | iPhone, iPad, Mac |
| Age rating | 4+ | 17+ |
| Developer | [Digital World Biology LLC](https://appshunter.io/developer/863565226) | [树伟 杨](https://appshunter.io/developer/1843510075) |

## What reviewers say

### Molecule World

[App page](https://appshunter.io/ios/app/molecule-world/id863565223)

Explore interactive 3D models of molecules, proteins, and DNA. This educational tool allows users to manipulate structures, experiment with visualization styles, and learn about chemical properties. Ideal for students and science enthusiasts of all ages.

**Highlights:** Interactive 3D molecule manipulation, Experiment with drawing and coloring styles, View and control molecular sequences (protein, DNA, RNA), Identify elements and investigate molecular properties, Capture images of molecular structures, Explore themed collections of molecules

**In-app purchases:** none


### Ivy Notes

[App page](https://appshunter.io/ios/app/ivy-notes/id6760211433)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Molecule World free?

Molecule World is free to download, with no in-app purchases.

### Is Ivy Notes free?

Ivy Notes costs $3.99, with no in-app purchases.

### Do Molecule World or Ivy Notes have ads?

Neither Molecule World nor Ivy Notes shows ads.

### Which is updated more often, Molecule World or Ivy Notes?

Molecule World ships an update every 2 months, and Ivy Notes every 3 weeks. Most recently, Molecule World was updated on September 20, 2026 and Ivy Notes on August 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.*