Comparison

Audio Function Generator vs Molecule Simulator

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Audio Function Generator

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
Read full description

This is the highly recommended and praised Function Generator App - an amazingly great and powerful tone generator. Enriched with a vast amount of features yet it is extremely intuitive and designed for simplicity. Get to know this great App now! It is very well maintained and has received considerable upgrades over the past years. So, … what can you do with this App? • PLAY TEST TONES Sine, Rectangular, Triangular and Sawtooth. • PLAY FREQUENCY SWEEP TEST TONES in both directions (minimum to maximum frequency and maximum to minimum frequency). • PLAY VOLUME SWEEPS (from minimum to maximum volume). • Try the SWEEP REPEAT / WOBBLE function. • Try the MUSIC TONES PLAYBACK. • Experiment with the huge FINE TUNE SELECTON, PRESETS SELECTION! • Or create your own CUSTOM PRESETS! • And SAVE an endless amount of CONFIGURATIONS (Frequency, Sweep, Noise) for later quick access and direct playback function. • Even play back different kinds of NOISE – White, Pink, Violet, Grey, Brown, Blue is also supported. The Function Generator is AMAZINGLY INTUITIVE and SIMPLE to use! AND THESE ARE THE ADVANCED SETTINGS/FEATURES (upgrade to PRO required): => Extending The Frequency Range (1Hz - 21kHz) => Extending The Sweep Times (0.1s - 600s) => Changing Min/Max Slider Frequency Ranges => Changing Max Sweep Time Slider Range => Changing Signal Amplitude => Enabling Of The Sweep Repeat / Wobble Function => Frequency Slider Setting to Linear or Logarithmic => Left/Right Channel Individual Selection => Permanently Saving Custom Presets => Saving Of Endless Number Of Audio Configurations => Phase Out Setting (custom phase shift of the generated signal) => BPM (Beats per Minute) Feature => Dual Function Generator => MultiTone Generator (playback of up to eight individual tones) => Background Theme Selection (Light/Dark) Check out the tutorial page: www.ee-toolkit.com/audio-function-generator

About

Molecule Simulator

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
Read full description

This app is a molecular viewer. With the data on PubChem and Protein Data Bank, it can show us 3D structure of molecules. Both space filling mode and ball-and-stick mode. --------------------------------------------- Contains some pre-installed modes. And you can download all kinds of molecules from PubChem or Protein Data Bank.

Screenshots

Audio Function Generator4 screens
Molecule Simulator4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard6 real differences · 4 level
Audio Function Generator versus Molecule Simulator: the parameters behind the verdict, then further details
ParameterAudio Function GeneratorMolecule Simulator
PriceFreeFree
Rating4.7 (2.2K ratings) — better4.3 (24 ratings)
Positive reviews77.1% of reviews100.0% of reviews — better
Number of ratings2.2K — better24
Update frequencyEvery 6 weeks — betterEvery 4 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.015.0 — better
Further details — not scored
Size13 MB8 MB
Age rating4+4+
DeveloperThomas Gruber仕清 刘

Customer experience

Audio Function Generator

All ratings2,211 ratings
Positive91.9%
Neutral3.1%
Negative5.0%
Written reviews271 reviews
Positive77.1%
Neutral6.3%
Negative16.6%

Molecule Simulator

All ratings22 ratings
Positive86.4%
Neutral0.0%
Negative13.6%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Audio Function Generator

Reported bugs

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

Requested features

6 requests
  • 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
Show 1 more
  • Improve accessibility (VoiceOver support)

Molecule Simulator

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Audio Function Generator

One-time1
  • Upgrade to PRO$9.99
None

Molecule Simulator

No in-app purchases

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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