# The Jerx

> Magic and mentalism utility app for creating illusions and predictions. (iPhone/iPad app by Marc Kerstein.)

- Source: https://appshunter.io/ios/app/the-jerx/id1082369141 (this page in markdown: same URL + `.md`)
- Developer: [Marc Kerstein](https://appshunter.io/developer/821255617)
- Category: Entertainment
- Price: $89.99
- Rating: 4.90/5 from 11 App Store ratings · 3 written reviews indexed
- Age rating: 17+
- Requires: iOS 16.6 · 4 MB
- Languages: American English
- Released: 2016-09-21
- Data updated: 2026-08-15
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/the-jerx/id1082369141/reviews.md

## What is The Jerx?

The Jerx App is a utility magic app that can be used to create a myriad of different effects, including:

- A Cute Memory Loss: Cause a spectator to forget something she just saw.

- Pee Hill Pot: Induce a mild, momentary loss of cognitive ability. Just by touching your spectator's head you reduce their reading ability to that of a 6-year-old.

- ScribBold: You read a spectator's mind, or one spectator reads another's mind to determine a thought of word or concept that is never written down or spoken aloud.

- Chocolate/Vanilla Twist: A perfect 50/50 prediction.

- Digital Linger: Create dual-reality effects for one person.

- I Know What You Need: Apparently implant a thought in a spectator's mind (requires The Jerx, Volume One book).

## Key features

- Memory loss illusions
- Cognitive impairment effects
- Mind reading capabilities
- Prediction effects
- Dual-reality illusions
- Thought implantation

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/the-jerx/id1082369141/reviews.md

### 5/5 — Don’t buy

*2025-03-10*

Only I want to use it 😅

### 5/5 — If you know you know

*2025-02-24*

This app does so much great stuff. It’s not cheap but has loads of utilities and as usual with any app by Marc it’s always update 🙂

### 1/5 — Not as described

*2021-08-01*

Strongly, not recommend, it waste of money & time. Also, send many emails to developer , but response with useless emails!!!

**Developer response:** We’ve had eight emails back and forth so far to try to figure out your issues, and I see you’ve yet to reply to my latest.
I’m more than happy to help as I have been trying to do so. Feel free to reply when you get a chance and we’ll pick up from where we left off.

## Frequently asked questions about The Jerx

### What kind of magic effects can I create with The Jerx?

The Jerx allows you to create a variety of effects, including memory loss illusions, inducing temporary cognitive impairment, mind reading, making predictions, creating dual-reality effects, and apparently implanting thoughts.

### Does The Jerx require any additional purchases or materials?

Some effects within The Jerx, such as 'I Know What You Need,' require the 'The Jerx, Volume One' book. The app itself is a one-time purchase.

### What is the price of The Jerx?

The Jerx is priced at $89.99.

### What devices does The Jerx support?

The Jerx is currently supported on iPhone devices.

### How often is The Jerx updated?

The Jerx was last updated on March 10, 2025, indicating active development and support.

### What is the age rating for The Jerx?

The Jerx has an age rating of 17+, suggesting mature content or themes.

### Does The Jerx have ads?

No, The Jerx does not contain advertisements. It is a paid application.

### What do users think of The Jerx?

Based on the available data, The Jerx has a perfect 5.0-star rating from 4 reviews, indicating very positive user sentiment.

## Version history (last 5 releases)

### 3.0.3 — 2025-03-10

3.0.3: Another bug fix for Echo Sync and PK effects that appears for some phones.
3.0: A dramatic overhaul of The Jerx App, bringing:

- New, clearer app interface
- A brand new effect "Echo Sync"
- Modernised UI for all effects
- Full Dark Mode support for all relevant effects
- Read The Jerx enhanced, with "eBook Mode" setting for Light and Dark Mode.
- White/black drawings when using Light/Dark Mode change automatically
- Drawing modes allow for more colours and controls
- Wish List better transcribing
- PK Video better camera UI in realistic mode
- Haptic feedback setting for all X Switch effects
- More features and settings

### 3.0.2 — 2025-03-10

3.0.2: Bug fix for Echo Sync and PK effects for larger iPhones.
3.0: A dramatic overhaul of The Jerx App, bringing:

- New, clearer app interface
- A brand new effect "Echo Sync"
- Modernised UI for all effects
- Full Dark Mode support for all relevant effects
- Read The Jerx enhanced, with "eBook Mode" setting for Light and Dark Mode.
- White/black drawings when using Light/Dark Mode change automatically
- Drawing modes allow for more colours and controls
- Wish List better transcribing
- PK Video better camera UI in realistic mode
- Haptic feedback setting for all X Switch effects
- More features and settings

### 3.0.1 — 2025-03-08

3.0.1: Bug fix for Echo Sync
3.0: A dramatic overhaul of The Jerx App, bringing:

- New, clearer app interface
- A brand new effect "Echo Sync"
- Modernised UI for all effects
- Full Dark Mode support for all relevant effects
- Read The Jerx enhanced, with "eBook Mode" setting for Light and Dark Mode.
- White/black drawings when using Light/Dark Mode change automatically
- Drawing modes allow for more colours and controls
- Wish List better transcribing
- PK Video better camera UI in realistic mode
- Haptic feedback setting for all X Switch effects
- More features and settings

### 3.0 — 2025-03-07

A dramatic overhaul of The Jerx App, bringing:

- New, clearer app interface
- A brand new effect "Echo Sync"
- Modernised UI for all effects
- Full Dark Mode support for all relevant effects
- Read The Jerx enhanced, with "eBook Mode" setting for Light and Dark Mode.
- White/black drawings when using Light/Dark Mode change automatically
- Drawing modes allow for more colours and controls
- Wish List better transcribing
- PK Video better camera UI in realistic mode
- Haptic feedback setting for all X Switch effects
- More features and settings

### 2.3.5 — 2024-10-04

2.3.5: Bug fixes

2.3.4: 
- Dark mode iOS 18 icon
- ChatJLX can be renamed

## Apps similar to The Jerx

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [NoteifyApp](https://appshunter.io/ios/app/noteifyapp/id6683305707) | — | Free | Entertainment |
| [MindDraw](https://appshunter.io/ios/app/minddraw/id6738773388) | 2.5 (2) | $79.99 | Entertainment |
| [SEKITAN](https://appshunter.io/ios/app/sekitan/id6762636351) | — | Free | Entertainment |
| [MultiDraw - Predict Anything](https://appshunter.io/ios/app/multidraw-predict-anything/id6760909640) | 5.0 (1) | $49.99 | Entertainment |
| [SAM by Christian Grace](https://appshunter.io/ios/app/sam-by-christian-grace/id6472223347) | — | Free | Entertainment |
| [Iceberg by Shameer Salim](https://appshunter.io/ios/app/iceberg-by-shameer-salim/id6470720433) | — | Free | Entertainment |

## More apps by Marc Kerstein

- [WebFX](https://appshunter.io/ios/app/webfx/id821255613)
- [Earworm](https://appshunter.io/ios/app/earworm/id953365139)
- [Diverter](https://appshunter.io/ios/app/diverter/id1081486684)
- [CardTrack - The Card Tracker](https://appshunter.io/ios/app/cardtrack-the-card-tracker/id1081525380)
- [WikiTest](https://appshunter.io/ios/app/wikitest/id1177870786)

All apps by Marc Kerstein: https://appshunter.io/developer/821255617

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-15.*