ISO - Kerstein & Qualter 4+

Digital meets analogue

Marc Kerstein

    • 5.0 • 24 Ratings
    • $59.99
    • Offers In-App Purchases

iPhone Screenshots


ISO lets you perform miracles using a borrowed phone.

“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)
- Pegasus page
- 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.

* Introducing Serial AR
A new way to use ISO in collaboration with William O'Connell. ISO is now even easier to perform, removing the need to take a photo in advance! (Serial AR requires a one-off, optional in-app purchase. It currently works with GBP, USD, EUR, CAD and HKD)

* 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

Version 1.2.3

- Presets - you can now save/load serials to presets for later use
- More regions added
- Bug fixes

Ratings and Reviews

5.0 out of 5
24 Ratings

24 Ratings

B4UC2Far ,

Appsolutely Brilliant

With ISO, Marc has created another reliable and versatile magic app that allows for mind blowing performances using a borrowed phone of a spectator. (Nothing is installed on their phone). The app runs flawlessly; video and written instructions are provided within the app. As always, Marc continually updates his apps, keeping them working as software updates and adding incredible features. Excellent support and customer service.

C. Oberle ,

A must have

Marc Kerstein is by far one of the best ap developers for magic hands down. His aps personally have always been my go to when I’m not carrying anything. ISO is amazing and one of Marc’s top aps in my opinion. Easy to maneuver and the tutorials are very easy to watch with many ideas and effects you can do. This is a must have for any magician

Philip reviewing ,


Powerful concept flawlessly executed.

App Privacy

The developer, Marc Kerstein, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • User Content

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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