# Flag Designer! Create a flag! vs Molecule Simulator

The clearest difference is in-app purchases: Molecule Simulator at none against Flag Designer! Create a flag!'s 1. Molecule Simulator also leads on review sentiment (100% vs 80%). Flag Designer! Create a flag!'s advantage is ratings volume (886 vs 24) and update cadence (monthly vs every 4 months). On price, rating, ads and device support there is nothing between them.

Both are free to download. Flag Designer! Create a flag! sells 1 one-off in-app purchase. Molecule Simulator asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.3 for Flag Designer! Create a flag! against 4.3 for Molecule Simulator. That said, the two scores are not equally well evidenced: Flag Designer! Create a flag! has 886 ratings behind it against 24, so its average is the more settled of the two. Written reviews are what separate them: 80% of Flag Designer! Create a flag!'s written reviews are positive against 100% of Molecule Simulator's.

Flag Designer! Create a flag! ships an update monthly, Molecule Simulator every 4 months. The most recent releases landed on September 17, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Flag Designer! Create a flag! | Molecule Simulator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (886 ratings)](https://appshunter.io/ios/app/flag-designer-create-a-flag/id1220846956/reviews) | **[4.3 (24 ratings)](https://appshunter.io/ios/app/molecule-simulator/id1538249996/reviews)** |
| Number of ratings | **886** | 24 |
| Positive reviews | 80.4% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 4 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 37 MB | 8 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Matthew Williamson](https://appshunter.io/developer/1215994306) | [仕清 刘](https://appshunter.io/developer/1531464103) |

## What reviewers say

### Flag Designer! Create a flag!

[App page](https://appshunter.io/ios/app/flag-designer-create-a-flag/id1220846956)

Easily design and create your own unique flags in minutes. Choose from a vast array of base designs, overlays, and over a hundred emblems to craft endless combinations for your personal or conceptual flag.

**Highlights:** Design custom flags, Dozens of base designs, Dozens of overlays, Over a hundred emblems, Endless combinations, Vexillology tool

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Flag Designer Ad-Free | $0.99 | one-time |

**What reviewers like**

- 👍 Simple and easy to use
- 🎨 Wide variety of colors and designs
- 💡 Helpful for world-building and creative projects
- 🎉 Fun and enjoyable experience
- 🌟 Great for making custom flags

**What reviewers complain about**

- 🔍 Limited symbol selection
- 📤 Inability to add multiple symbols
- 🔀 Difficulty in positioning elements precisely
- 📢 Excessive ads interrupting the experience
- 🔒 Some features locked behind paywall

**Reported bugs**

- Ads sometimes fail to load
- Occasional crashes or freezes
- Inconsistent behavior when unlocking features

**Requested features**

- Add more flag layout options (e.g., 13 stripes, custom shapes)
- Allow importing custom images/symbols
- Implement a text overlay feature
- Provide more control over symbol placement and sizing
- Offer an ad-free premium version


### Molecule Simulator

[App page](https://appshunter.io/ios/app/molecule-simulator/id1538249996)

Visualize the 3D structures of molecules using data from PubChem and Protein Data Bank. Explore molecules in various viewing modes and download an extensive library of compounds.

**Highlights:** 3D molecular visualization, Space filling mode, Ball-and-stick mode, Data from PubChem, Data from Protein Data Bank, Downloadable molecule library

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Flag Designer! Create a flag! free?

Flag Designer! Create a flag! is free to download, with in-app purchases available.

### Is Molecule Simulator free?

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

### Which has better reviews, Flag Designer! Create a flag! or Molecule Simulator?

Molecule Simulator is rated higher. Flag Designer! Create a flag! averages 4.3 out of 5 from 886 ratings, while Molecule Simulator averages 4.3 from 24 ratings.

### Do Flag Designer! Create a flag! or Molecule Simulator have ads?

Neither Flag Designer! Create a flag! nor Molecule Simulator shows ads.

### Which is updated more often, Flag Designer! Create a flag! or Molecule Simulator?

Flag Designer! Create a flag! ships an update monthly, and Molecule Simulator every 4 months. Most recently, Flag Designer! Create a flag! was updated on September 17, 2026 and Molecule Simulator on September 21, 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.*