# RTA Pro vs PAcalculate

The clearest difference is review sentiment: PAcalculate at 100% against RTA Pro's 50%. PAcalculate also leads on price (Free vs $5.99) and rating (5.0 vs 4.5). RTA Pro's advantage is chart position (#191 vs unranked). On update cadence, ads, in-app purchases and device support there is nothing between them.

PAcalculate is free to download; RTA Pro costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

PAcalculate holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 2 and 7 respectively. Written reviews point the same way: 50% of RTA Pro's written reviews are positive against 100% of PAcalculate's.

RTA Pro ships an update every 3 months, PAcalculate every 4 months. The most recent releases landed on October 8, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | RTA Pro | PAcalculate |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Rating | [4.5 (2 ratings)](https://appshunter.io/ios/app/rta-pro/id703753970/reviews) | **[5.0 (7 ratings)](https://appshunter.io/ios/app/pacalculate/id793460437/reviews)** |
| Number of ratings | 2 | **7** |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 4 months |
| Monetization | Paid | **Free** |
| Best chart rank | **#191** | — |
| Size | 12 MB | 3 MB |
| Requires iOS | 17.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Matthias Schorer](https://appshunter.io/developer/290579382) | [Jose Brusi](https://appshunter.io/developer/793460440) |

## What reviewers say

### RTA Pro

[App page](https://appshunter.io/ios/app/rta-pro/id703753970)

**Currently charting:** #191 Top Paid · Utilities (US App Store)

Transform your iOS device into a professional audio analysis tool. Analyze ambient noise frequencies, pinpoint room resonance, and set up sound systems for events. Features include custom calibration, multiple display modes, and adjustable speed settings.

**Highlights:** Real-time audio spectrum analysis, Frequency range 32Hz to 16kHz, Linear, dB(A), and dB(C) weightings, 1/3 Octave Bands, Octave Bands, and FFT display, Adjustable speed settings, Custom calibration options

**In-app purchases:** none


### PAcalculate

[App page](https://appshunter.io/ios/app/pacalculate/id793460437)

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.

**Highlights:** 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)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RTA Pro free?

RTA Pro costs $5.99, with no in-app purchases.

### Is PAcalculate free?

PAcalculate is free to download, with no in-app purchases.

### Which has better reviews, RTA Pro or PAcalculate?

PAcalculate is rated higher. RTA Pro averages 4.5 out of 5 from 2 ratings, while PAcalculate averages 5.0 from 7 ratings.

### Do RTA Pro or PAcalculate have ads?

Neither RTA Pro nor PAcalculate shows ads.

### Which is updated more often, RTA Pro or PAcalculate?

RTA Pro ships an update every 3 months, and PAcalculate every 4 months. Most recently, RTA Pro was updated on October 8, 2026 and PAcalculate on October 1, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*