# TestCard ProHD 4k vs PhaseChecker

The clearest difference is price: TestCard ProHD 4k at Free against PhaseChecker's $0.99. TestCard ProHD 4k also leads on rating (3.1 vs 2.0) and update cadence (every 6 months vs every 43 months). PhaseChecker's advantage is in-app purchases (none vs 1) and iOS requirement (14.1 vs 17.6). On ratings volume, ads and device support there is nothing between them.

TestCard ProHD 4k is free to download; PhaseChecker costs $0.99 up front. TestCard ProHD 4k sells 1 one-off in-app purchase. PhaseChecker asks for nothing beyond the download.

TestCard ProHD 4k holds the better App Store score, 3.1 against 2.0. Both are backed by a comparable volume of ratings — 8 and 3 respectively. Written reviews point the same way: 36% of TestCard ProHD 4k's written reviews are positive against 16% of PhaseChecker's.

TestCard ProHD 4k ships an update every 6 months, PhaseChecker every 43 months. The most recent releases landed on June 7, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | TestCard ProHD 4k | PhaseChecker |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[3.1 (8 ratings)](https://appshunter.io/ios/app/testcard-prohd-4k/id705103583/reviews)** | [2.0 (3 ratings)](https://appshunter.io/ios/app/phasechecker/id1160400348/reviews) |
| Number of ratings | **8** | 3 |
| Positive reviews | **36.4% of reviews** | 15.8% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 43 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 60 MB | 1 MB |
| Requires iOS | 17.6 | **14.1** |
| Devices | iPhone, iPad, Apple TV | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [J.S. Technology Ltd.](https://appshunter.io/developer/586233093) | [Rick Peacock](https://appshunter.io/developer/286052385) |

## What reviewers say

### TestCard ProHD 4k

[App page](https://appshunter.io/ios/app/testcard-prohd-4k/id705103583)

Calibrate your home theater's audio and visual elements with a suite of professional test cards. Diagnose lip-sync issues and optimize picture settings like contrast, brightness, color, motion, and sharpness. Includes an SPL meter for sound setup.

**Highlights:** Screen calibration for contrast, brightness, and color, Motion and sharpness test cards, SPL (decibel) meter for surround sound setup, Audio visual synchronization test for lip-sync, Instructions displayed on device while test card shows on external display, Compatibility testing before in-app purchase

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Test Cards | $4.99 | one-time |


### 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 TestCard ProHD 4k free?

TestCard ProHD 4k is free to download, with in-app purchases available.

### Is PhaseChecker free?

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

### Which has better reviews, TestCard ProHD 4k or PhaseChecker?

TestCard ProHD 4k is rated higher. TestCard ProHD 4k averages 3.1 out of 5 from 8 ratings, while PhaseChecker averages 2.0 from 3 ratings.

### Do TestCard ProHD 4k or PhaseChecker have ads?

Neither TestCard ProHD 4k nor PhaseChecker shows ads.

### Which is updated more often, TestCard ProHD 4k or PhaseChecker?

TestCard ProHD 4k ships an update every 6 months, and PhaseChecker every 43 months. Most recently, TestCard ProHD 4k was updated on June 7, 2026 and PhaseChecker on September 17, 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.*