# Frequency Sound Generator App vs Granula Synth

The clearest difference is review sentiment: Frequency Sound Generator App at 66% against Granula Synth's 20%. Frequency Sound Generator App also leads on rating (4.5 vs 1.8) and update cadence (every 2 months vs every 25 months). Granula Synth's advantage is monetization model (freemium vs subscription) and ads (none vs shown). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Frequency Sound Generator App sells 2 in-app purchases, starting at $5.99 per 7 days and Granula Synth sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Frequency Sound Generator App holds the better App Store score, 4.5 against 1.8. That said, the two scores are not equally well evidenced: Frequency Sound Generator App has 5.1K ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 66% of Frequency Sound Generator App's written reviews are positive against 20% of Granula Synth's.

Frequency Sound Generator App ships an update every 2 months, Granula Synth every 25 months. The most recent releases landed on October 26, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Frequency Sound Generator App | Granula Synth |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (5.1K ratings)](https://appshunter.io/ios/app/frequency-sound-generator-app/id1238160553/reviews)** | [1.8 (4 ratings)](https://appshunter.io/ios/app/granula-synth/id1624549704/reviews) |
| Number of ratings | **5.1K** | 4 |
| Positive reviews | **66.3% of reviews** | 20.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 months** | Every 25 months |
| Monetization | Subscription | **Freemium** |
| Size | 36 MB | 75 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Min Ku](https://appshunter.io/developer/1204192873) | [Stanislav Duplinskiy](https://appshunter.io/developer/1529735040) |

## What reviewers say

### Frequency Sound Generator App

[App page](https://appshunter.io/ios/app/frequency-sound-generator-app/id1238160553)

Generate sound frequencies from 1Hz to 25,000Hz with a simple interface. Features include wave visualization, adjustable sensitivity, and multiple waveform options. Use it for hearing tests, pet training, or as a prank tool.

**Highlights:** Frequency range 1Hz to 25,000Hz, Wave visualization, Adjustable sensitivity, Multiple waveforms (Sine, Square, Sawtooth, Triangle), Custom frequency range, Logarithmic and Linear slider modes

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Access Weekly Plan | $5.99 | per 7 days |
| Unlimited Access Yearly Plan | $19.99 | per year |

**What reviewers like**

- 👍 Helpful for tinnitus
- 🚀 Accurate frequency generation
- 🎉 Great for meditation and relaxation
- 💡 Useful for testing speaker systems
- 🔍 Ability to test hearing range

**What reviewers complain about**

- 🐛 Difficulty adjusting precise frequencies
- 🔊 Extremely high frequencies can be painful
- 🔋 Stops playing when screen is locked
- 📢 Excessive ads
- 🤔 Mosquito repellent feature not effective

**Reported bugs**

- Frequency slider is overly sensitive
- Displayed frequency doesn't match actual output
- Inconsistent behavior between 'Play' and 'Mode' buttons

**Requested features**

- Option to save favorite frequencies
- Ability to type in specific frequency values
- Background playback support
- Paid ad-free version


### Granula Synth

[App page](https://appshunter.io/ios/app/granula-synth/id1624549704)

Explore new soundscapes by manipulating granular audio. This app offers a library of presets, custom sound import, and extensive parameter adjustments for unique music creation. Save your settings and share your sonic experiments.

**Highlights:** Granular sound manipulation, Preset library, Custom sound import, Parameter adjustment, Save user settings, Share audio recordings

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Access to app features | $2.99 | per month |
| Access to app features | $7.49 | per 3 months |
| Access to app features | $8.99 | per 6 months |


## Frequently asked questions

### Is Frequency Sound Generator App free?

Frequency Sound Generator App is free to download, with in-app purchases available.

### Is Granula Synth free?

Granula Synth is free to download, with in-app purchases available.

### Which has better reviews, Frequency Sound Generator App or Granula Synth?

Frequency Sound Generator App is rated higher. Frequency Sound Generator App averages 4.5 out of 5 from 5.1K ratings, while Granula Synth averages 1.8 from 4 ratings.

### Do Frequency Sound Generator App or Granula Synth have ads?

Frequency Sound Generator App shows ads; Granula Synth does not.

### Which is updated more often, Frequency Sound Generator App or Granula Synth?

Frequency Sound Generator App ships an update every 2 months, and Granula Synth every 25 months. Most recently, Frequency Sound Generator App was updated on October 26, 2026 and Granula Synth on October 18, 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.*