# Audio Function Generator vs Molecule Simulator

The clearest difference is in-app purchases: Molecule Simulator at none against Audio Function Generator's 1. Molecule Simulator also leads on review sentiment (100% vs 77%). Audio Function Generator's advantage is rating (4.7 vs 4.3) and ratings volume (2.2K vs 24). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Audio Function Generator sells 1 one-off in-app purchase. Molecule Simulator asks for nothing beyond the download.

Audio Function Generator holds the better App Store score, 4.7 against 4.3. That said, the two scores are not equally well evidenced: Audio Function Generator has 2.2K ratings behind it against 24, so its average is the more settled of the two. Written reviews complicate that: 77% of Audio Function Generator's written reviews are positive against 100% of Molecule Simulator's, so the app with the better star average is not the one people write more warmly about.

Audio Function Generator ships an update every 6 weeks, Molecule Simulator every 4 months. The most recent releases landed on October 20, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Audio Function Generator | Molecule Simulator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (2.2K ratings)](https://appshunter.io/ios/app/audio-function-generator/id768229610/reviews)** | [4.3 (24 ratings)](https://appshunter.io/ios/app/molecule-simulator/id1538249996/reviews) |
| Number of ratings | **2.2K** | 24 |
| Positive reviews | 77.1% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 4 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 13 MB | 8 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Gruber](https://appshunter.io/developer/342699861) | [仕清 刘](https://appshunter.io/developer/1531464103) |

## What reviewers say

### Audio Function Generator

[App page](https://appshunter.io/ios/app/audio-function-generator/id768229610)

Generate various audio test tones, including sine, square, triangle, and sawtooth waves. Explore frequency and volume sweeps, noise generation, and custom preset creation. Advanced features like extended frequency ranges and multi-tone playback are available with an upgrade.

**Highlights:** Generate sine, square, triangle, and sawtooth tones, Frequency and volume sweep generation, Noise generation (white, pink, violet, etc.), Custom preset creation and saving, Extended frequency range (PRO feature), Multi-tone playback (PRO feature)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade to PRO | $9.99 | one-time |

**What reviewers like**

- 👍 Great app
- 🎶 Helps with Tinnitus
- 💯 Best app I've paid for
- 🔍 Highly recommended
- 🎨 Attention to detail

**What reviewers complain about**

- 🐛 Crashes
- 💰 Deceptive/Money hungry
- 🔒 Basic features paywalled
- 🔒 Limited without paying
- 🔒 Removed functionality to push paid version

**Reported bugs**

- Crashes on launch
- Volume slider issues
- Airplay not working
- Sound distortion when display is active

**Requested features**

- Add download/save feature for custom sounds
- Improve sweep function (continuous mode, better frequency control)
- Add more multi-frequency rows
- Implement 432Hz base frequency option
- Add phase control for noise generators


### 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 Audio Function Generator free?

Audio Function Generator 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, Audio Function Generator or Molecule Simulator?

Audio Function Generator is rated higher. Audio Function Generator averages 4.7 out of 5 from 2.2K ratings, while Molecule Simulator averages 4.3 from 24 ratings.

### Do Audio Function Generator or Molecule Simulator have ads?

Neither Audio Function Generator nor Molecule Simulator shows ads.

### Which is updated more often, Audio Function Generator or Molecule Simulator?

Audio Function Generator ships an update every 6 weeks, and Molecule Simulator every 4 months. Most recently, Audio Function Generator was updated on October 20, 2026 and Molecule Simulator on October 8, 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.*