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Screenshots

  • ISO - Kerstein & Qualter screenshot 1
  • ISO - Kerstein & Qualter screenshot 2
  • ISO - Kerstein & Qualter screenshot 3

About ISO - Kerstein & Qualter

“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, HKD, CHF, KRW, BRL, RUP, INR bills, with more being added over time.) * 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.

Ratings & reviews

5.0

28 ratings

5 ★ 100% 4 ★ 0% 3 ★ 0% 2 ★ 0% 1 ★ 0%

What’s new

Version 1.2.4 · Updated August 5, 2026

- Liquid Glass UI update - iOS 26 bug fixes - More currencies added for Serial AR - Camera more responsive fix

App privacy

The developer, Marc Kerstein, reported these privacy practices to Apple.

Data Not Linked to You

The following data, which may be collected but is not linked to your identity, may be used for the following purposes:

  • User Content: Photos or Videos

Used for: App Functionality

Alternatives to ISO - Kerstein & Qualter

Looking for apps like ISO - Kerstein & Qualter? Here are 6 similar apps on the App Store. The highest rated is Psychic Prediction (5.0/5), and 1 of the 6 are free to download.

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