PAcalculate vs RTA01
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)
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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
RTA01
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RTA is a pocket-sized real-time spectrum analyzer built for audio engineers and PA operators. FEATURES - Switchable resolution: 31, 63, or 127 bands - A/C/Z frequency weighting (IEC 61672-1 compliant) - High-precision peak detection using raw FFT data with parabolic interpolation - Peak hold - Calibration offset (for matching a reference measurement device) - Tap any band to see its exact frequency and dB level - Upside-down mode for inverted mounting - Multiple color themes (Black / White / Neon / B&W) NO ADS, NO PRESSURE This app has no interruptive ads. If you find it useful, you can support development with an optional tip. Handy for quick frequency balance checks and finding feedback points in the field. Note: readings are for relative reference only and are not guaranteed to match a calibrated measurement instrument.
Screenshots
Verdict
The clearest difference is in-app purchases: PAcalculate at none against RTA01's 3. PAcalculate also leads on iOS requirement (13.0 vs 17.6). 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. RTA01 sells 3 one-off in-app purchases. PAcalculate asks for nothing beyond the download.
| Parameter | PAcalculate | RTA01 |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (7 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 7 — better | — |
| Update frequency | Every 4 months | — |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 3 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Jose Brusi | Shunsuke Takasu |
In-app purchases
PAcalculate
No in-app purchases
RTA01
- A roll of vinyl tape$0.99
- A roll of gaffer tape$1.99
- Tip - XLR Connector$6.99
