# Signals Generator vs Granula Synth

The clearest difference is review sentiment: Signals Generator at 67% against Granula Synth's 20%. Signals Generator also leads on rating (4.7 vs 1.8) and ratings volume (30 vs 4). Granula Synth's advantage is iOS requirement (12.0 vs 15.6). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Signals Generator sells 14 one-off in-app purchases 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.

Signals Generator holds the better App Store score, 4.7 against 1.8. That said, the two scores are not equally well evidenced: Signals Generator has 30 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 67% of Signals Generator's written reviews are positive against 20% of Granula Synth's.

Signals Generator ships an update every 33 months, Granula Synth every 25 months. The most recent releases landed on October 24, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Signals Generator | Granula Synth |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (30 ratings)](https://appshunter.io/ios/app/signals-generator/id1526653387/reviews)** | [1.8 (4 ratings)](https://appshunter.io/ios/app/granula-synth/id1624549704/reviews) |
| Number of ratings | **30** | 4 |
| Positive reviews | **66.7% of reviews** | 20.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 33 months | **Every 25 months** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 15 MB | 75 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [怀卫 张](https://appshunter.io/developer/1252544375) | [Stanislav Duplinskiy](https://appshunter.io/developer/1529735040) |

## What reviewers say

### Signals Generator

[App page](https://appshunter.io/ios/app/signals-generator/id1526653387)

Transform your mobile device into a dual-channel signal generator for sound and audio electric signals. Offers a wide variety of waveform types and customizable parameters like amplitude, frequency, and phase. Ideal for professionals and hobbyists for signal generation and circuit measurement.

**Highlights:** Dual-channel signal generation, Multiple waveform types, Adjustable amplitude, frequency, and phase, Independent channel control, Zoomable waveform display, Interface color selection

**Features:** Vision Pro support

**In-app purchases (14)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sine Wave | $0.99 | one-time |
| Square Wave | $0.99 | one-time |
| Gaussian Noise | $0.99 | one-time |
| Uniformly distributed noise | $0.99 | one-time |
| Pink Noise | $0.99 | one-time |
| Red (brown) noise | $0.99 | one-time |
| Maximum Length Sequence | $0.99 | one-time |
| Rayleigh Noise | $0.99 | one-time |
| Sawtooth Wave | $0.99 | one-time |
| Gamma Noise | $0.99 | one-time |
| Functional Wave | $2.99 | one-time |
| Sweep Signal | $2.99 | one-time |
| All Noise Signals | $3.99 | one-time |
| All type of signals | $7.99 | one-time |


### 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 Signals Generator free?

Signals Generator 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, Signals Generator or Granula Synth?

Signals Generator is rated higher. Signals Generator averages 4.7 out of 5 from 30 ratings, while Granula Synth averages 1.8 from 4 ratings.

### Do Signals Generator or Granula Synth have ads?

Neither Signals Generator nor Granula Synth shows ads.

### Which is updated more often, Signals Generator or Granula Synth?

Signals Generator ships an update every 33 months, and Granula Synth every 25 months. Most recently, Signals Generator was updated on October 24, 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.*