High Quality Audio Visual products and iOS Apps

High Quality Audio Visual products and iOS Apps

Welcome to J.S. Technology.

News Flash!  
We're now offering blue filters for use with TestCard ProHD.   See the "Calibration" menu on the left!


iOS Apps to make life that little bit easier.  Be it calming a child with MetroBaby, or calibrating an 65" flat screen with TestCard ProHD, J.S. Technology has delivered.   We even help keep your your life better oganised with Loyalty Store for those loyalty cards you like to use but not carry.   And who can remember every PIN number or code in modern life without PIN Store?

We also build a selection of video products for analogue systems, as well as lip-sync correction, and are regarded as having some of the highest quality converters on the market today.

The HDMI products we stock are carefully selected for their performance, and more importantly for HDMI, their compatibility.

Additionally we also accept commissions for electronic design work.

Thank you for visiting.

Dr John Sim.


Our iOS Apps:


TestCard ProHD


New from J.S. Technology is TestCard ProHD, the tool for setting up and calibrating your TV and monitor.   TestCard ProHD works with Apple TV V2 & V3 using AirPlay Mirroring and with Apple's Digital Media Interface for HDMI or VGA.

Availble exclusively on iPhone and iPad:





Also on iOS is MetroBaby™, the game for entertaining and distracting babies and toddlers.   It gives a variety of games (after in-app purchase) to help entertain when you're on the move.

Available on the App Store™:




Loyalty Store

Loyalty Store helps you slim down your purse or wallet by carrying your loyalty cards in your iPhone.   Simply scan the barcode in to the app, take a picture of the front and back just to prove to the store it’s your card, and leave the card at home.

Available on the App Store™:



PIN Store Logo


Struggle to remember your PIN number?   Who can with bank cards, credit cards, alarm codes, door entry codes, and every other code you need in daily life!

PIN Store will help you remember those PIN numbers by hiding them in a grid.

Available on the App Store™:




Our own built analoge Audio / Visual accessories have won awards in review by major specialist publications.   We cover mainly SCART and component inputs and also Lip Sync with our Digital Audio Delay.

We also stock HDMI converters, swtiches and distribution splitters.   All our HDMI products have been selected upon their performance.

Please also review our A/V guides which cover some of the more technical aspects of A/V in an easy to understand format!


Plasma screenshotDr John Sim receiving innovation awardAV AwardsInnovation for high performance 


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