# Signals Generator vs vmc

The clearest difference is in-app purchases: vmc at none against Signals Generator's 14. vmc also leads on update cadence (monthly vs every 33 months) and iOS requirement (11.0 vs 15.6). Signals Generator's advantage is device support (4 vs 1). On price and ads there is nothing between them.

Both are free to download. Signals Generator sells 14 one-off in-app purchases. vmc asks for nothing beyond the download.

Signals Generator ships an update every 33 months, vmc monthly. The most recent releases landed on October 7, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Signals Generator | vmc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (29 ratings)](https://appshunter.io/ios/app/signals-generator/id1526653387/reviews)** | — |
| Number of ratings | **29** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 33 months | **Monthly** |
| Monetization | Free with in-app purchases | — |
| Size | 15 MB | 151 MB |
| Requires iOS | 15.6 | **11.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [怀卫 张](https://appshunter.io/developer/1252544375) | [广东保伦电子股份有限公司](https://appshunter.io/developer/933187149) |

## 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 |


### vmc

[App page](https://appshunter.io/ios/app/vmc/id1599825525)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Signals Generator free?

Signals Generator is free to download, with in-app purchases available.

### Is vmc free?

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

### Do Signals Generator or vmc have ads?

Neither Signals Generator nor vmc shows ads.

### Which is updated more often, Signals Generator or vmc?

Signals Generator ships an update every 33 months, and vmc monthly. Most recently, Signals Generator was updated on October 7, 2026 and vmc on September 13, 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.*