# Tone generator vs Signals Generator

The clearest difference is rating: Signals Generator at 4.7 against Tone generator's 4.0. Signals Generator also leads on ads (none vs shown). Tone generator's advantage is update cadence (every 5 months vs every 33 months) and ratings volume (152 vs 29). On price, review sentiment, in-app purchases and monetization model there is nothing between them.

Both are free to download. Tone generator sells 3 one-off in-app purchases and Signals Generator sells 14 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 4.0. That said, the two scores are not equally well evidenced: Tone generator has 152 ratings behind it against 29, so its average is the more settled of the two. Written reviews split almost evenly too, at 67% and 67% positive.

Tone generator ships an update every 5 months, Signals Generator every 33 months. The most recent releases landed on September 17, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Tone generator | Signals Generator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (152 ratings)](https://appshunter.io/ios/app/tone-generator/id457003837/reviews) | **[4.7 (29 ratings)](https://appshunter.io/ios/app/signals-generator/id1526653387/reviews)** |
| Number of ratings | **152** | 29 |
| Positive reviews | **67.1% of reviews** | 66.7% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 5 months** | Every 33 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 27 MB | 15 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [michael heinz](https://appshunter.io/developer/292745639) | [怀卫 张](https://appshunter.io/developer/1252544375) |

## What reviewers say

### Tone generator

[App page](https://appshunter.io/ios/app/tone-generator/id457003837)

Create various periodic signals with adjustable frequency and amplitude for testing electronic circuits or tuning instruments. Features include a metronome, a real-time tuner, and options for generating different noise types and tone sequences. It also offers unique features for hearing tests and party games.

**Highlights:** Generate periodic signals, Adjustable frequency and amplitude, Integrated instrument tuner, Metronome for practice, Hearing ability tests, Generate white/pink noise, Create tone sequences

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Extra-Feature 1 | $1.99 | one-time |
| No advertising | $1.99 | one-time |
| Upgrade to full version | $3.99 | one-time |

**What reviewers like**

- 🚀 Works every time!
- 🚀 Awesome application for generating tones and studying sound
- 👍 Very useful
- 👍 Genius
- 👍 Great app to make your tones

**What reviewers complain about**

- 🐛 Doesn't go lower than 10hz
- 🔍 Ruined by ads
- 🔍 Way too many ads
- 🔍 Crashes before I can export even though I paid for the feature
- 🔍 Fake app. Buying the upgrade doesn't do anything. There is no support. You can't export like it says you can. It's a scam.

**Reported bugs**

- Doesn't go lower than 10hz
- Crashes before I can export even though I paid for the feature
- Fake app. Buying the upgrade doesn't do anything. There is no support. You can't export like it says you can. It's a scam.
- app is modified
- No tone

**Requested features**

- Wish I had a manual  that explains a couple functions
- More precise way to select the frequency
- Playing of multiple tomes
- Manually enter a frequency
- More than one voice


### 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 |


## Frequently asked questions

### Is Tone generator free?

Tone generator 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 generator or Signals Generator?

Signals Generator is rated higher. Tone generator averages 4.0 out of 5 from 152 ratings, while Signals Generator averages 4.7 from 29 ratings.

### Do Tone generator or Signals Generator have ads?

Tone generator shows ads; Signals Generator does not.

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

Tone generator ships an update every 5 months, and Signals Generator every 33 months. Most recently, Tone generator was updated on September 17, 2026 and Signals Generator on September 20, 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.*