# SpeakerPro vs PZ

The clearest difference is price: PZ at Free against SpeakerPro's $2.99. SpeakerPro's advantage is ratings volume (4 vs 1) and iOS requirement (7.0 vs 9.0). On rating, review sentiment, ads and in-app purchases there is nothing between them.

PZ is free to download; SpeakerPro costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 1.0 for SpeakerPro against 1.0 for PZ. Both are backed by a comparable volume of ratings — 4 and 1 respectively. Written reviews split almost evenly too, at 0% and 0% positive.

## The numbers

| Metric | SpeakerPro | PZ |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [1.0 (4 ratings)](https://appshunter.io/ios/app/speakerpro/id1061631115/reviews) | [1.0 (1 ratings)](https://appshunter.io/ios/app/pz-x4800s/id6736720956/reviews) |
| Number of ratings | **4** | 1 |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Monetization | Paid | **Free** |
| Size | 4 MB | 2 MB |
| Requires iOS | **7.0** | 9.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [AudioAppsStore](https://appshunter.io/developer/549033691) | [huizhou shangshui technology co.,ltd](https://appshunter.io/developer/1762340195) |

## What reviewers say

### SpeakerPro

[App page](https://appshunter.io/ios/app/speakerpro/id1061631115)

Precisely measure speaker distances and toe-in angles using your iPhone or iPad. Ideal for audio enthusiasts and professionals, this app offers intuitive guidance for optimizing your sound system's layout. It works offline and provides accurate measurements within fractions of an inch.

**Highlights:** Precise speaker distance measurement, Intelligent toe-in angle recommendations, Works offline, Accurate to fractions of an inch, Automatic reference calibration, Projects automatically saved

**Features:** macOS Compatibility

**In-app purchases:** none


### PZ

[App page](https://appshunter.io/ios/app/pz-x4800s/id6736720956)

This utility enhances your car's audio system with a non-destructive plug-and-play DSP amplifier. It features advanced processing for dynamic music, precise EQ tuning, and spatial editing, all controllable via smartphone.

**Highlights:** Non-destructive plug & play installation, Quad-core 32-bit DSP processing, DRC dynamic music processing, 31-band EQ tuning system, Adjustable sound field delay, Built-in Bluetooth for lossless music, Smartphone control for Time-Delay

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SpeakerPro free?

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

### Is PZ free?

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

### Which has better reviews, SpeakerPro or PZ?

SpeakerPro and PZ are both rated 1.0 out of 5 on the App Store, from 4 and 1 ratings respectively.

### Do SpeakerPro or PZ have ads?

Neither SpeakerPro nor PZ shows ads.

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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.*