# AudioCalc vs ProPi System Analyzer

The clearest difference is price: AudioCalc at $2.99 against ProPi System Analyzer's $19.99. AudioCalc also leads on iOS requirement (7.0 vs 17.0). ProPi System Analyzer's advantage is update cadence (every 5 days vs every 7 months). On ads, in-app purchases and device support there is nothing between them.

AudioCalc costs $2.99 and ProPi System Analyzer $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

AudioCalc ships an update every 7 months, ProPi System Analyzer every 5 days. Both last shipped on November 6, 2026.

## The numbers

| Metric | AudioCalc | ProPi System Analyzer |
| --- | --- | --- |
| Price | **$2.99** | $19.99 |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/audiocalc/id294447976/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 5 days** |
| Monetization | Paid | — |
| Size | 3 MB | 59 MB |
| Requires iOS | **7.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Nelcea](https://appshunter.io/developer/1694672221) | [Anh Viet Do](https://appshunter.io/developer/6811894471) |

## What reviewers say

### AudioCalc

[App page](https://appshunter.io/ios/app/audiocalc/id294447976)

This tool provides audio-specific conversion formulas for HiFi enthusiasts, home theater buffs, and audio professionals. It includes converters for frequency, band, delay, volume, and room modes, aiding in loudspeaker positioning, EQ setup, and room acoustics. Supports both imperial and metric units.

**Highlights:** Frequency, period, and wavelength converter, Parametric EQ band setup tool, Speaker distance and delay calculator, Amplifier power calculation, Room mode response computation, Imperial and metric unit support

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### ProPi System Analyzer

[App page](https://appshunter.io/ios/app/propi-system-analyzer/id6811894469)

**In-app purchases:** none


## Frequently asked questions

### Is AudioCalc free?

AudioCalc costs $2.99, with no in-app purchases.

### Is ProPi System Analyzer free?

ProPi System Analyzer costs $19.99, with no in-app purchases.

### Do AudioCalc or ProPi System Analyzer have ads?

Neither AudioCalc nor ProPi System Analyzer shows ads.

### Which is updated more often, AudioCalc or ProPi System Analyzer?

AudioCalc ships an update every 7 months, and ProPi System Analyzer every 5 days. Most recently, AudioCalc was updated on November 6, 2026 and ProPi System Analyzer on November 6, 2026.

---

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