# PhaseChecker vs Mobile Oscilloscope

The clearest difference is rating: Mobile Oscilloscope at 5.0 against PhaseChecker's 2.0. PhaseChecker's advantage is review sentiment (16% vs 0%) and price ($0.99 vs $1.99). On ratings volume, update cadence, ads and in-app purchases there is nothing between them.

PhaseChecker costs $0.99 and Mobile Oscilloscope $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Mobile Oscilloscope holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 3 and 2 respectively. Written reviews complicate that: 16% of PhaseChecker's written reviews are positive against 0% of Mobile Oscilloscope'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, Mobile Oscilloscope every 30 months. The most recent releases landed on September 17, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | PhaseChecker | Mobile Oscilloscope |
| --- | --- | --- |
| Price | **$0.99** | $1.99 |
| Rating | [2.0 (3 ratings)](https://appshunter.io/ios/app/phasechecker/id1160400348/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/mobile-oscilloscope/id1363904692/reviews)** |
| Number of ratings | **3** | 2 |
| Positive reviews | **15.8% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 43 months | **Every 30 months** |
| Monetization | Paid | Paid |
| Size | 1 MB | 2 MB |
| Requires iOS | **14.1** | 15.6 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Rick Peacock](https://appshunter.io/developer/286052385) | [怀卫 张](https://appshunter.io/developer/1252544375) |

## 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


### Mobile Oscilloscope

[App page](https://appshunter.io/ios/app/mobile-oscilloscope/id1363904692)

Transform your phone into a handheld oscilloscope for detailed audio signal analysis. Professionals can also use it for circuit measurements. Features include precise frequency measurement, multiple trigger modes, and gesture-based zooming.

**Highlights:** Audio signal analysis, Circuit analysis for professionals, Detailed signal parameter display, Accurate frequency measurement, Multiple trigger modes, Gesture-based measurement and zooming, Customizable interface colors

**In-app purchases:** none


## Frequently asked questions

### Is PhaseChecker free?

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

### Is Mobile Oscilloscope free?

Mobile Oscilloscope costs $1.99, with no in-app purchases.

### Which has better reviews, PhaseChecker or Mobile Oscilloscope?

Mobile Oscilloscope is rated higher. PhaseChecker averages 2.0 out of 5 from 3 ratings, while Mobile Oscilloscope averages 5.0 from 2 ratings.

### Do PhaseChecker or Mobile Oscilloscope have ads?

Neither PhaseChecker nor Mobile Oscilloscope shows ads.

### Which is updated more often, PhaseChecker or Mobile Oscilloscope?

PhaseChecker ships an update every 43 months, and Mobile Oscilloscope every 30 months. Most recently, PhaseChecker was updated on September 17, 2026 and Mobile Oscilloscope on September 20, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*