# PhaseChecker vs SignalScope X

The clearest difference is price: SignalScope X at Free against PhaseChecker's $0.99. SignalScope X also leads on rating (3.0 vs 2.0) and update cadence (every 3 weeks vs every 43 months). PhaseChecker's advantage is in-app purchases (none vs 10) and iOS requirement (14.1 vs 18.6). On review sentiment, ads and device support there is nothing between them.

SignalScope X is free to download; PhaseChecker costs $0.99 up front. SignalScope X sells 10 in-app purchases, starting at $3.49 per month. PhaseChecker asks for nothing beyond the download.

SignalScope X holds the better App Store score, 3.0 against 2.0. That said, the two scores are not equally well evidenced: SignalScope X has 23 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 16% of PhaseChecker's written reviews are positive against 10% of SignalScope X's, so the app with the better star average is not the one people write more warmly about.

PhaseChecker ships an update every 43 months, SignalScope X every 3 weeks. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | PhaseChecker | SignalScope X |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [2.0 (3 ratings)](https://appshunter.io/ios/app/phasechecker/id1160400348/reviews) | **[3.0 (23 ratings)](https://appshunter.io/ios/app/signalscope-x/id1304775893/reviews)** |
| Number of ratings | 3 | **23** |
| Positive reviews | **15.8% of reviews** | 10.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 43 months | **Every 3 weeks** |
| Monetization | Paid | **Freemium** |
| Size | 1 MB | 19 MB |
| Requires iOS | **14.1** | 18.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Rick Peacock](https://appshunter.io/developer/286052385) | [Faber Acoustical, LLC](https://appshunter.io/developer/284781780) |

## 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


### SignalScope X

[App page](https://appshunter.io/ios/app/signalscope-x/id1304775893)

This app provides powerful measurement and analysis tools for acoustics, audio, and electronics. It offers a free oscilloscope and subscription-based tool sets for basic, advanced, and professional needs, compatible across iPhone, iPad, and Mac.

**Highlights:** Oscilloscope, FFT Analyzer, Spectrogram Analyzer, Data Recorder, Sound Intensity Analyzer, Room Acoustics Analyzer

**Features:** Family Sharing, Vision Pro support, iPhone Duo support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic Tool Set, 1 Month | $3.49 | per month |
| Advanced Tool Set, 1 Month | $9.99 | per month |
| Pro Tool Set, 1 Month | $24.99 | per month |
| Basic Tool Set, 1 Year | $34.99 | per year |
| Advanced Tool Set, 1 Year | $99.99 | per year |
| Pro Tool Set, 1 Year | $249.99 | per year |
| 14-day Free Trial, Pro Tool Set | Free | one-time |
| Basic Tool Set 2026 | $69.99 | one-time |
| Advanced Tool Set 2026 | $199.99 | one-time |
| Pro Tool Set 2026 from Advanced | $309.99 | one-time |

**What reviewers like**

- 👍 Powerful software
- 👍 Good for professional testing
- 👍 Captures faint hums
- 👍 Works well for waveforms
- 👍 Useful for guitar debugging

**What reviewers complain about**

- 💸 Expensive subscription model
- 💸 High one-time purchase cost
- 💸 Perceived as a rip-off
- 💸 Previous purchases invalidated
- 💸 Lack of upgrade path

**Reported bugs**

- Recording starts and stops
- App crashes on launch
- Oscilloscope and FFT not functioning
- SPL meter inaccurate/uncalibratable
- App not working on older devices

**Requested features**

- Manual for better understanding
- Ability to store and retrieve setups
- One-off payment option
- More intuitive user interface
- Ability to change Y-axis scale


## Frequently asked questions

### Is PhaseChecker free?

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

### Is SignalScope X free?

SignalScope X is free to download, with in-app purchases available.

### Which has better reviews, PhaseChecker or SignalScope X?

SignalScope X is rated higher. PhaseChecker averages 2.0 out of 5 from 3 ratings, while SignalScope X averages 3.0 from 23 ratings.

### Do PhaseChecker or SignalScope X have ads?

Neither PhaseChecker nor SignalScope X shows ads.

### Which is updated more often, PhaseChecker or SignalScope X?

PhaseChecker ships an update every 43 months, and SignalScope X every 3 weeks. Most recently, PhaseChecker was updated on November 2, 2026 and SignalScope X on November 7, 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.*