# PAcalculate vs BuzziSpace RT60

The clearest difference is review sentiment: PAcalculate at 100% against BuzziSpace RT60's 25%. PAcalculate also leads on rating (5.0 vs 2.7) and iOS requirement (13.0 vs 15.6). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

PAcalculate holds the better App Store score, 5.0 against 2.7. Both are backed by a comparable volume of ratings — 7 and 3 respectively. Written reviews point the same way: 100% of PAcalculate's written reviews are positive against 25% of BuzziSpace RT60's.

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on June 8, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | PAcalculate | BuzziSpace RT60 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/pacalculate/id793460437/reviews)** | [2.7 (3 ratings)](https://appshunter.io/ios/app/buzzispace-rt60/id1613535156/reviews) |
| Number of ratings | **7** | 3 |
| Positive reviews | **100.0% of reviews** | 25.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | Every 4 months |
| Monetization | Free | Free |
| Size | 3 MB | 40 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jose Brusi](https://appshunter.io/developer/793460440) | [BuzziSpace](https://appshunter.io/developer/1613535158) |

## What reviewers say

### 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


### BuzziSpace RT60

[App page](https://appshunter.io/ios/app/buzzispace-rt60/id1613535156)

This tool measures room reverberation times and simulates the effect of acoustic products. It helps determine the number of acoustic elements needed to improve room acoustics. The app organizes acoustic solutions by category for easier product selection.

**Highlights:** Measures reverberation times, Simulates acoustic product impact, Calculates required acoustic elements, Organized product catalog by category, How-to video guide

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PAcalculate free?

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

### Is BuzziSpace RT60 free?

BuzziSpace RT60 is free to download, with no in-app purchases.

### Which has better reviews, PAcalculate or BuzziSpace RT60?

PAcalculate is rated higher. PAcalculate averages 5.0 out of 5 from 7 ratings, while BuzziSpace RT60 averages 2.7 from 3 ratings.

### Do PAcalculate or BuzziSpace RT60 have ads?

Neither PAcalculate nor BuzziSpace RT60 shows ads.

### Which is updated more often, PAcalculate or BuzziSpace RT60?

PAcalculate ships an update every 4 months, and BuzziSpace RT60 every 4 months. Most recently, PAcalculate was updated on June 8, 2026 and BuzziSpace RT60 on September 13, 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.*