Comparison

TestCard ProHD 4k vs TNAS mobile

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

TestCard ProHD 4k

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
Read full description

Professionals use test cards to calibrate broadcast systems and cinemas use them too, so why shouldn’t home cinemas or theatres use them too? TestCard ProHD is the innovative means to calibrating your screen to ensure a consistent and correct representation of display media. (In-App purchase required after ensuring this will work on your TV / Display.) ** In-App purchase required after compatibility testing for full functionality. See below for why. ** Additionally, TestCard ProHD also now includes an SPL or “decibel” meter to assist with setting up surround sound sources. It’s a solution for calibrating both audio and visual elements within the home that can also be used in professional environments. Newest version now includes a Audio Visual Synchronisation test to help diagnose lip-sync issues. TestCard ProHD is the application for setting up a modern High Definition TV or projector. We’ve grouped together some common types of test cards as well as some new ones that will help set up home theaters to a professional standard. Adjusting the contrast and brightness is essential to ensuring that you get the best from your TV or projector, but color is vitally important too. Further, test cards for motion and sharpness tweak more performance from your screen. Using these test cards and their instructions you’ll be able to tweak to get the best you can without the expensive of a dedicated calibration service. Only by applying test cards in a controlled manner will you to get the best from your home theater and TestCard ProHD is the right tool, taking advantage of the unique abilities of the iPhone and iPad. Within modern screens there are many techniques used to smooth motion. These can also have a detrimental effect, yet correctly set some do improve the picture. Having a repeating pattern to assist the setting of motion controls is essential. TestCard ProHD has test cards specifically design for motion testing on a screen. Further, each test card has an information section to give you concise information and instruction on how to use it. The more that can be gained form each test card, the more information is provided. For ease of use the instruction are displayed on the iPhone / iPad while simultaneously displaying the test card on the external display. Access to the test cards on the external display, Virtual Blue Filter and the SPL meter are only available after an In-App purchase. Using the default test screen please ensure that you have tested your device with the media adaptor, or Apple TV, on the external display before purchasing access. This is to allow you to verify that your system is fully compatible before purchase, and to share a single purchase with your iOS devices and Apple TV. TestCard ProHD can be used with Apple TV V2, V3, V4 or V5 / 4k, or with the Apple media interfaces for HDMI or VGA. Apple TV V2 and V3 can be used as the external display interface using AirPlay Mirroring. Simply switch on AirPlay on the iPhone or iPad and select Mirroring. See below for instructions on AirPlay Mirroring. For HDMI or VGA Apple produces two types of media interface. While we’ve included some test cards for VGA / computer calibration, the home cinema user who is looking for 1080p compatibility should opt for the HDMI based media interface. Apple TV version of the app is also available. Once access to the testcards is bought on either iOS or Apple TV app, you can have access on the other type of device without additional purchase. The In-App-Purchase is shared between all compatible devices registered on your Apple ID. Apple TV AirPlay Instructions: To enable AirPlay Mirroring connect your iOS device and your Apple TV to the same Wi-Fi network. For iOS 7 swipe up from the bottom of your screen to access Control Center. Tap on the AirPlay icon, select your Apple TV and switch on Mirroring. More details can be found on Apple’s support page http://support.apple.com/kb/ht5209

About

TNAS mobile

Access and manage your TerraMaster NAS devices from your mobile phone. Back up photos and videos, browse documents, and stream multimedia files remotely or locally.

Highlights
  • Remote NAS access
  • Local NAS access
  • Photo and video backup
  • Document browsing
  • File upload/download
  • Multimedia playback
  • Device management
Features
Read full description

TNAS mobile is the dedicated mobile app for TerraMaster TNAS devices. With it, you can manage files, back up photos, and browse documents on your phone. It also serves as your portable monitoring center, allowing you to check the status of the TOS system anytime and easily manage your TNAS device.

Screenshots

TestCard ProHD 4k4 screens
TNAS mobile4 screens

Verdict

The call

The clearest difference is rating: TestCard ProHD 4k at 3.0 against TNAS mobile's 1.0. TestCard ProHD 4k also leads on review sentiment (36% vs 10%) and ratings volume (9 vs 1). TNAS mobile's advantage is in-app purchases (none vs 1) and update cadence (every 2 months vs every 6 months). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

TestCard ProHD 4k holds the better App Store score, 3.0 against 1.0. That said, the two scores are not equally well evidenced: TestCard ProHD 4k has 9 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 36% of TestCard ProHD 4k's written reviews are positive against 10% of TNAS mobile's.

UpkeepUpdate frequency

TestCard ProHD 4k ships an update every 6 months, TNAS mobile every 2 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

Scorecard7 real differences · 3 level
TestCard ProHD 4k versus TNAS mobile: the parameters behind the verdict, then further details
ParameterTestCard ProHD 4kTNAS mobile
PriceFreeFree
Rating3.0 (9 ratings) — better1.0 (1 ratings)
Positive reviews36.4% of reviews — better10.2% of reviews
Number of ratings9 — better1
Update frequencyEvery 6 monthsEvery 2 months — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, Apple TV — betteriPhone, iPod
Requires iOS17.615.6 — better
Further details — not scored
Size60 MB122 MB
Age rating4+17+
DeveloperJ.S. Technology Ltd.Noon Technology Company Limited

Customer experience

TestCard ProHD 4k

All ratings8 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews11 reviews
Positive36.4%
Neutral0.0%
Negative63.6%

TNAS mobile

Written reviews59 reviews
Positive10.2%
Neutral3.4%
Negative86.4%

Bugs and requests

TestCard ProHD 4k

Not enough reviews yet to summarise bugs or requests.

TNAS mobile

Reported bugs

18 issues
  • App crashes on startup
  • App crashes when connected to network
  • App crashes when backing up photos/videos
  • App freezes during backup
  • Cannot connect to NAS
Show 13 more
  • Connection lost errors
  • Remote login fails
  • Image backup is flaky
  • Video backup hangs or fails (.mov files)
  • App doesn't find NAS
  • Battery drain when running in background
  • Background refresh doesn't stop battery drain
  • App prompts for update but no update available
  • App shows 'OPEN' instead of 'UPDATE' when it's the newest version
  • App not working with TOS 5.1
  • App not working with TOS 6
  • QR code scanning issue on single device
  • App not available in certain regions/countries

Requested features

10 requests
  • Add display of desktop shortcuts and apps
  • Improve user-friendliness and navigation
  • Add iPad support
  • Allow uploading more than 99 files at a time
  • Add 'select all' option for uploads
Show 5 more
  • Improve video backup reliability
  • Make app compatible with F2-210
  • Add dark mode option
  • Provide advanced analytics dashboard
  • Improve translation for Russian language

In-app purchases

1 purchases

TestCard ProHD 4k

One-time1
  • Test Cards$4.99
None

TNAS mobile

No in-app purchases

Questions

Is TestCard ProHD 4k free?
TestCard ProHD 4k is free to download, with in-app purchases available.
Is TNAS mobile free?
TNAS mobile is free to download, with no in-app purchases.
Which has better reviews, TestCard ProHD 4k or TNAS mobile?
TestCard ProHD 4k is rated higher. TestCard ProHD 4k averages 3.0 out of 5 from 9 ratings, while TNAS mobile averages 1.0 from 1 ratings.
Do TestCard ProHD 4k or TNAS mobile have ads?
Neither TestCard ProHD 4k nor TNAS mobile shows ads.
Which is updated more often, TestCard ProHD 4k or TNAS mobile?
TestCard ProHD 4k ships an update every 6 months, and TNAS mobile every 2 months. Most recently, TestCard ProHD 4k was updated on November 1, 2026 and TNAS mobile on November 3, 2026.

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