# Speaker Polarity vs DM Smart app

The clearest difference is price: DM Smart app at Free against Speaker Polarity's $4.99. DM Smart app also leads on iOS requirement (13.0 vs 15.0). Speaker Polarity's advantage is chart position (#193 vs unranked). On ads, in-app purchases and device support there is nothing between them.

DM Smart app is free to download; Speaker Polarity costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Speaker Polarity | DM Smart app |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[3.6 (18 ratings)](https://appshunter.io/ios/app/speaker-polarity/id293263027/reviews)** | — |
| Number of ratings | **18** | — |
| Positive reviews | 65.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | — |
| Monetization | Free | — |
| Best chart rank | **#193** | — |
| Size | 35 MB | 75 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Andrew Smith](https://appshunter.io/developer/291822462) | [AAMP Global](https://appshunter.io/developer/1254428712) |

## What reviewers say

### Speaker Polarity

[App page](https://appshunter.io/ios/app/speaker-polarity/id293263027)

**Currently charting:** #193 Top Paid · Music (US App Store)

This app tests speaker wiring to ensure correct phase. It analyzes a proprietary "pop" sound to determine if speaker cones are moving in the correct direction, identifying reversed wiring. Ideal for home theater, car audio, or professional setups.

**Highlights:** Tests speaker polarity, Detects in-phase or out-of-phase wiring, Analyzes proprietary "pop" sound, Supports various speaker types (woofer, midrange, tweeter), Provides Plus (correct) or Minus (reversed) readings, Works with headset jacks and adapters, Supports Bluetooth and AirPlay streaming

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

**In-app purchases:** none


### DM Smart app

[App page](https://appshunter.io/ios/app/dm-smart-app/id6746138889)

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

**In-app purchases:** none


## Frequently asked questions

### Is Speaker Polarity free?

Speaker Polarity costs $4.99, with no in-app purchases.

### Is DM Smart app free?

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

### Do Speaker Polarity or DM Smart app have ads?

Neither Speaker Polarity nor DM Smart app 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.*