# TestCard ProHD 4k vs Check 'em

The clearest difference is rating: Check 'em at 5.0 against TestCard ProHD 4k's 3.0. Check 'em also leads on in-app purchases (none vs 1) and update cadence (weekly vs every 6 months). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. TestCard ProHD 4k sells 1 one-off in-app purchase. Check 'em asks for nothing beyond the download.

Check 'em holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 9 and 4 respectively.

TestCard ProHD 4k ships an update every 6 months, Check 'em weekly. The most recent releases landed on October 23, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | TestCard ProHD 4k | Check 'em |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (9 ratings)](https://appshunter.io/ios/app/testcard-prohd-4k/id705103583/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/check-em-the-based-2fa-app/id6477842236/reviews)** |
| Number of ratings | **9** | 4 |
| Positive reviews | 36.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 months | **Weekly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 60 MB | 2 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | **iPhone, iPad, Apple TV** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [J.S. Technology Ltd.](https://appshunter.io/developer/586233093) | [Jacob Bartlett](https://appshunter.io/developer/1266240131) |

## 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 |


### Check 'em

[App page](https://appshunter.io/ios/app/check-em-the-based-2fa-app/id6477842236)

This app notifies you when a particularly interesting or 'awesome' number appears during authentication processes for services like banking or email. You can customize your preferences and collect these special numbers.

**Highlights:** Real-time notifications for special numbers, Customizable notification preferences, Collect 'awesome' authentication codes, Simple and intuitive interface

**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 Check 'em free?

Check 'em is free to download, with no in-app purchases.

### Which has better reviews, TestCard ProHD 4k or Check 'em?

Check 'em is rated higher. TestCard ProHD 4k averages 3.0 out of 5 from 9 ratings, while Check 'em averages 5.0 from 4 ratings.

### Do TestCard ProHD 4k or Check 'em have ads?

Neither TestCard ProHD 4k nor Check 'em shows ads.

### Which is updated more often, TestCard ProHD 4k or Check 'em?

TestCard ProHD 4k ships an update every 6 months, and Check 'em weekly. Most recently, TestCard ProHD 4k was updated on October 23, 2026 and Check 'em on October 9, 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.*