# PhaseChecker vs EDGE DSP

The clearest difference is price: EDGE DSP at Free against PhaseChecker's $0.99. EDGE DSP also leads on update cadence (every 6 weeks 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.

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

PhaseChecker ships an update every 43 months, EDGE DSP every 6 weeks. The most recent releases landed on September 17, 2026 and January 30, 2026 respectively.

## The numbers

| Metric | PhaseChecker | EDGE DSP |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| 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 43 months | **Every 6 weeks** |
| Monetization | Paid | — |
| Size | 1 MB | 6 MB |
| Requires iOS | 14.1 | **9.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rick Peacock](https://appshunter.io/developer/286052385) | [Midbass Distribution Limited](https://appshunter.io/developer/1669128334) |

## What reviewers say

### 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


### EDGE DSP

[App page](https://appshunter.io/ios/app/edge-dsp/id6474717579)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PhaseChecker free?

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

### Is EDGE DSP free?

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

### Do PhaseChecker or EDGE DSP have ads?

Neither PhaseChecker nor EDGE DSP shows ads.

### Which is updated more often, PhaseChecker or EDGE DSP?

PhaseChecker ships an update every 43 months, and EDGE DSP every 6 weeks. Most recently, PhaseChecker was updated on September 17, 2026 and EDGE DSP on January 30, 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.*