PAcalculate vs Signals Generator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PAcalculate
This app provides 28 calculators and reference information for professional audio sound reinforcement and lighting. It covers acoustics, audio electronics, cabling, and lighting calculations, making it a valuable tool for audio and lighting professionals.
- 28 calculators for pro-audio and lighting
- Acoustics calculations (SPL, air absorption)
- Audio electronics calculations (dBu/dBV, Q/B/W)
- Cabling calculations (speaker cable loss)
- Lighting calculations (DMX, RGB/CMY)
- Reference info (pinouts, graphs)
Read full descriptionHide full description
28 calculators (47 calculations) for pro-audio sound reinforcement and lighting, as well as reference info and utilities. A super handy tool for people dealing with PA, sound reinforcement, sound systems, electro-acoustics, pro-audio and lighting Acoustics - SPL (sound pressure level) - SPL sum with phase, distance or time difference - Air absorption attenuation for a given humidity, temperature, frequency and distance - Ceiling speaker coverage - Time «» Distance - Audio frequency «» Wavelength (includes lambda/2 and 2*lambda/3 for line arrays or subwoofer arrays) - Transition distance for line arrays (near to far field) - End-fire and broadside array subwoofer modelling Audio electronics - dBu «» dBV «» Volts - Q «» B/W (bandwidth) - Limiter threshold, attack&releases times - Amplifier gain Cabling - Speaker cable: low impedance, high impedance (constant voltage line, 70V/100V). Calculates energy and level loss, system damping factor Lights DMX channel, RGB/RGBW/RGBA and CMY Useful reference info such as pinouts (proaudio and lighting) and graphs Utilities: Inclinometer, Flashlight / light with selectable intermittence (uses camera permission) Latest news from DoctorProAudio.com
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.
- Dual-channel signal generation
- Multiple waveform types
- Adjustable amplitude, frequency, and phase
- Independent channel control
- Zoomable waveform display
- Interface color selection
Read full descriptionHide 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
Verdict
The clearest difference is in-app purchases: PAcalculate at none against Signals Generator's 14. PAcalculate also leads on review sentiment (100% vs 67%) and update cadence (every 4 months vs every 33 months). Signals Generator's advantage is ratings volume (30 vs 7). On price, ads and device support 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
Both are free to download. Signals Generator sells 14 one-off in-app purchases. PAcalculate asks for nothing beyond the download.
PAcalculate holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 7 and 30 respectively. Written reviews point the same way: 100% of PAcalculate's written reviews are positive against 67% of Signals Generator's.
PAcalculate ships an update every 4 months, Signals Generator every 33 months. The most recent releases landed on October 17, 2026 and October 24, 2026 respectively.
| Parameter | PAcalculate | Signals Generator |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (7 ratings) — better | 4.7 (30 ratings) |
| Positive reviews | 100.0% of reviews — better | 66.7% of reviews |
| Number of ratings | 7 | 30 — better |
| Update frequency | Every 4 months — better | Every 33 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 13.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 3 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | Jose Brusi | 怀卫 张 |
Customer experience
PAcalculate
Signals Generator
In-app purchases
PAcalculate
No in-app purchases
Signals Generator
- Sine Wave$0.99
- Square Wave$0.99
- Gaussian Noise$0.99
Show 11 moreShow fewer
- Uniformly distributed noise$0.99
- Pink Noise$0.99
- Red (brown) noise$0.99
- Maximum Length Sequence$0.99
- Rayleigh Noise$0.99
- Sawtooth Wave$0.99
- Gamma Noise$0.99
- Functional Wave$2.99
- Sweep Signal$2.99
- All Noise Signals$3.99
- All type of signals$7.99
Questions
Is PAcalculate free?
Is Signals Generator free?
Which has better reviews, PAcalculate or Signals Generator?
Do PAcalculate or Signals Generator have ads?
Which is updated more often, PAcalculate or Signals Generator?
Other comparisons















