# Tone Gen Pro vs Signals Generator

The clearest difference is update cadence: Tone Gen Pro at every 3 months against Signals Generator's every 33 months. Tone Gen Pro also leads on review sentiment (75% vs 67%) and iOS requirement (12.0 vs 15.6). Signals Generator's advantage is rating (4.7 vs 4.5). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Tone Gen Pro sells 1 one-off in-app purchase and Signals Generator sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Signals Generator holds the better App Store score, 4.7 against 4.5. Both are backed by a comparable volume of ratings — 48 and 30 respectively. Written reviews complicate that: 75% of Tone Gen Pro's written reviews are positive against 67% of Signals Generator's, so the app with the better star average is not the one people write more warmly about.

Tone Gen Pro ships an update every 3 months, Signals Generator every 33 months. The most recent releases landed on November 2, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | Tone Gen Pro | Signals Generator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (48 ratings)](https://appshunter.io/ios/app/tone-gen-pro/id1448112303/reviews) | **[4.7 (30 ratings)](https://appshunter.io/ios/app/signals-generator/id1526653387/reviews)** |
| Number of ratings | **48** | 30 |
| Positive reviews | **75.0% of reviews** | 66.7% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 33 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 44 MB | 15 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 12+ | 4+ |
| Developer | [Ibrahim Al-Sammarraie](https://appshunter.io/developer/1448112302) | [怀卫 张](https://appshunter.io/developer/1252544375) |

## What reviewers say

### Tone Gen Pro

[App page](https://appshunter.io/ios/app/tone-gen-pro/id1448112303)

Create various audio signals, including single tones, sweeps, and merged sounds, with extensive parameter control. Ideal for students, musicians, educators, and audio professionals exploring sound.

**Highlights:** Generate single type signals (sine, square, noise), Create sweep (chirp) signals (linear/exponential), Generate click signals with adjustable duty cycle, Merge multiple tones and sweeps, Frequencies up to 20 kHz, Extensive parameter control

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tone Gen Pro Full | $1.99 | one-time |


### 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 (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sine Wave | $0.99 | one-time |
| Square Wave | $0.99 | one-time |
| Gaussian Noise | $0.99 | one-time |
| Pink Noise | $0.99 | one-time |
| Maximum Length Sequence | $0.99 | one-time |
| Sawtooth Wave | $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 |


## Frequently asked questions

### Is Tone Gen Pro free?

Tone Gen Pro is free to download, with in-app purchases available.

### Is Signals Generator free?

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

### Which has better reviews, Tone Gen Pro or Signals Generator?

Signals Generator is rated higher. Tone Gen Pro averages 4.5 out of 5 from 48 ratings, while Signals Generator averages 4.7 from 30 ratings.

### Do Tone Gen Pro or Signals Generator have ads?

Neither Tone Gen Pro nor Signals Generator shows ads.

### Which is updated more often, Tone Gen Pro or Signals Generator?

Tone Gen Pro ships an update every 3 months, and Signals Generator every 33 months. Most recently, Tone Gen Pro was updated on November 2, 2026 and Signals Generator on November 11, 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.*