Comparison

Tone Gen Pro vs Signals Generator

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Tone Gen Pro

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
Read full description

Generate audio signal of different shapes with many parameters and options. You can generate frequencies up to 20 kHz of audio signal. If you are curious student about sound after a physics class, music instruments hobbyist/professional, a teacher, or a professional in audio equipment, this app is for you ! You can generate: - Single type signal (sinusoidal, square, noise, etc) - Sweep (chirp) signal (linear or exponential) - Click: ON-OFF sine wave with any duty cycle and ON frequency - Merged sound of any number of tones or sweeps

About

Signals Generator

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
Read full description

This app transforms your phone into a powerful handheld dual-channel signal generator for generating sound signals (and can also be used by professionals to generate audio electrical signals). Signal types include: sine wave, triangular wave, sawtooth wave, rectangular wave, Gaussian noise, Rayleigh noise, gamma noise, salt-and-pepper noise, uniformly distributed noise, pink noise, red (brown) noise, blue noise, purple noise, longest sequence signal, frequency-sweep signal, elementary function waveform, and hand-drawn waveform. It can switch between single-channel and dual-channel operation; the dual channels can independently set waveforms and their parameters. The parameters of the signal, such as amplitude, frequency, and phase, can be adjusted. The waveform can be scaled freely using gestures or buttons, making it simple and easy to use. Support interface color selection. This application is normally used to generate sound signals and poses no risks. Special instructions for circuit measurement: Professionals can utilize this application for circuit measurements, with audio electrical signals being output through the left and right channels of headphones. Please ensure safety: You must possess sufficient professional knowledge, and isolation equipment must be added to high-voltage circuits. Circuit measurement involves risks. The author of this application will not be responsible for any personal or equipment damage caused by the correct or incorrect use of this application.

Screenshots

Tone Gen Pro4 screens
Signals Generator4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard4 real differences · 6 level
Tone Gen Pro versus Signals Generator: the parameters behind the verdict, then further details
ParameterTone Gen ProSignals Generator
PriceFreeFree
Rating4.5 (48 ratings)4.7 (30 ratings) — better
Positive reviews75.0% of reviews — better66.7% of reviews
Number of ratings48 — better30
Update frequencyEvery 3 months — betterEvery 33 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS12.0 — better15.6
Further details — not scored
Size44 MB15 MB
Age rating12+4+
DeveloperIbrahim Al-Sammarraie怀卫 张

Customer experience

Tone Gen Pro

All ratings45 ratings
Positive84.4%
Neutral6.7%
Negative8.9%
Written reviews4 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

Signals Generator

All ratings29 ratings
Positive89.7%
Neutral6.9%
Negative3.4%
Written reviews3 reviews
Positive66.7%
Neutral33.3%
Negative0.0%

In-app purchases

1 purchases

Tone Gen Pro

One-time1
  • Tone Gen Pro Full$1.99
10 purchases

Signals Generator

One-time10
  • Sine Wave$0.99
  • Square Wave$0.99
  • Gaussian Noise$0.99
Show 7 more
  • Pink Noise$0.99
  • Maximum Length Sequence$0.99
  • Sawtooth Wave$0.99
  • Functional Wave$2.99
  • Sweep Signal$2.99
  • All Noise Signals$3.99
  • All type of signals$7.99

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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