# PAcalculate vs Impulso

The clearest difference is review sentiment: PAcalculate at 100% against Impulso's 12%. PAcalculate also leads on rating (5.0 vs 1.6). 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 1.6. Both are backed by a comparable volume of ratings — 7 and 16 respectively. Written reviews point the same way: 100% of PAcalculate's written reviews are positive against 12% of Impulso's.

PAcalculate ships an update every 4 months, Impulso every 3 months. The most recent releases landed on October 1, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | PAcalculate | Impulso |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/pacalculate/id793460437/reviews)** | [1.6 (16 ratings)](https://appshunter.io/ios/app/impulso/id991324137/reviews) |
| Number of ratings | 7 | **16** |
| Positive reviews | **100.0% of reviews** | 11.5% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 3 MB | 24 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jose Brusi](https://appshunter.io/developer/793460440) | [Artnovion LDA](https://appshunter.io/developer/991324136) |

## 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


### Impulso

[App page](https://appshunter.io/ios/app/impulso/id991324137)

Measure your room's acoustic response and simulate improvements with acoustic products. Visualize reverberation time and optimize room acoustics for different room types. Supports internal or external microphones and impulse sources.

**Highlights:** Acoustic response measurement, Reverberation time visualization, Acoustic product simulation, Room dimension input, Room type optimization, Internal/external microphone support

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is PAcalculate free?

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

### Is Impulso free?

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

### Which has better reviews, PAcalculate or Impulso?

PAcalculate is rated higher. PAcalculate averages 5.0 out of 5 from 7 ratings, while Impulso averages 1.6 from 16 ratings.

### Do PAcalculate or Impulso have ads?

Neither PAcalculate nor Impulso shows ads.

### Which is updated more often, PAcalculate or Impulso?

PAcalculate ships an update every 4 months, and Impulso every 3 months. Most recently, PAcalculate was updated on October 1, 2026 and Impulso on October 17, 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.*