ISO - Kerstein & Qualter - Digital meets analogue
Developed by Marc Kerstein




ISO - Kerstein & Qualter is a app developed by Marc Kerstein and released for iOS and Android in February 2023. The updated version 1.0.1, released in February 2023, can be downloaded on Android and iOS devices running on iOS 11.0 or later, such as iPhone 14 Pro Max, 12 Pro, X, SE, iPhone 8, 7, iPad Pro, and iPad Mini. Before downloading the ISO Kerstein and Qualter app, let's understand what it's all about.
About ISO - Kerstein & Qualter App
“Marc's apps are unbelievable.”
—David Blaine
ISO is a digital solution which enables many analogue effects.
ISO lets you perform miracles using a borrowed phone.
*** You can use ISO for:
- Bill to impossible location
- A book test with ANY printed text (a restaurant menu, a borrowed book, a magazine, etc)
- Playing card forces
- Stacked deck effects
...and so much more!
For example... imagine:
- You ask your spectator to borrow a bill, which they place on the table in front of them.
- Using THEIR phone, you openly take a photo of the bill to verify later.
- You crumple the bill into a ball in your hand, and have your spectator hold your wrist.
- You slowly open your hand to show that the bill has now VANISHED!
- The spectator then checks under their bag to find the bill!
- They check the serial number… it MATCHES the photo! It’s the SAME bill!
* Your phone is NEVER in play!
ISO only uses the spectator’s phone during the effect, meaning your phone is never seen.
* Carefully justified in every way
All stages of ISO’s possible effects and routines have been carefully thought through and are justified at each step.
* Works in ANY language
ISO is performable in any language. No text is visible during the effect, and so ISO can be used in any country or region.
* Multiple pairing methods
Includes an adaptive peek screen, plus optional printable pairing stickers and NFC tag support.
* Fully customisable
The many included settings, features and modes available let you use ISO for many different effects.
* WikiTest pairing integration
Performing ISO can leave your spectator paired and ready to perform WikiTest at the conclusion of ISO’s effect.
* VERY easy to perform
* NO accomplice used
* NO memory work needed
ISO is for entertainment purposes only.
Please get in touch to discuss video/audio/TV/internet broadcasting of any description of this effect.
What's new in version 1.0.1
- Bug fixes
- Undo/redo annotations
- WikiTest integration fix
Get ISO - Kerstein & Qualter App for iOS/Android - Download Now
Quickly download the ISO - Kerstein & Qualter app for iPhone/iPad and Android by clicking the download buttons or scanning the QR code below.
What Client’s Say
Review: Amazing!
Powerful concept flawlessly executed.
By Philip reviewing