# GoHDLM vs PhaseChecker

The clearest difference is price: GoHDLM at Free against PhaseChecker's $0.99. GoHDLM also leads on update cadence (every 7 months vs every 43 months) and iOS requirement (9.0 vs 14.1). On ads, in-app purchases and device support there is nothing between them.

GoHDLM is free to download; PhaseChecker costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

GoHDLM ships an update every 7 months, PhaseChecker every 43 months. The most recent releases landed on September 25, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | GoHDLM | PhaseChecker |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | — | **[2.0 (3 ratings)](https://appshunter.io/ios/app/phasechecker/id1160400348/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 15.8% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 43 months |
| Monetization | — | Paid |
| Size | 5 MB | 1 MB |
| Requires iOS | **9.0** | 14.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [intona](https://appshunter.io/developer/963212136) | [Rick Peacock](https://appshunter.io/developer/286052385) |

## What reviewers say

### GoHDLM

[App page](https://appshunter.io/ios/app/gohdlm/id582239525)

**Features:** macOS Compatibility

**In-app purchases:** none


### PhaseChecker

[App page](https://appshunter.io/ios/app/phasechecker/id1160400348)

This utility app tests your sound system to ensure speakers are correctly wired and in-phase. It offers manual and automatic modes, with advanced waveform analysis for precise setup. Proper phasing is crucial for optimal bass response and stereo imaging.

**Highlights:** Speaker phase and polarity testing, Manual and automatic test modes, Microphone-based analysis, Waveform view for advanced users, In-app help and guidance, Audio output connection

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

**In-app purchases:** none


## Frequently asked questions

### Is GoHDLM free?

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

### Is PhaseChecker free?

PhaseChecker costs $0.99, with no in-app purchases.

### Do GoHDLM or PhaseChecker have ads?

Neither GoHDLM nor PhaseChecker shows ads.

### Which is updated more often, GoHDLM or PhaseChecker?

GoHDLM ships an update every 7 months, and PhaseChecker every 43 months. Most recently, GoHDLM was updated on September 25, 2026 and PhaseChecker on October 4, 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.*