The Jerx
Not in any tracked top chart right now.
Updated 19 Oct 2026 · rankings refresh through the day
DeveloperMarc Kerstein
CategoryEntertainment
Price89.99 GBP
Released
Rating★ 5.0 (2)
Version3.0.3
Age rating17+
First seen by us
12 Oct 2026
12 Oct 2026Installs (est.)1k+ worldwide
Rating
5.0 ★
2 ratings
Measured
The Jerx on the App Store
App details
App ID
1082369141
Publisher
Marc Kerstein
On the store since
Sep 2016
10 years on the store
Minimum OS
iOS 16.6+
iPhone 8 and later
Devices
iPhone · iPad
Content rating
17+
2 content notes below
Languages
1
EN
Size
4 MB
Content notesInfrequent/Mild Profanity or Crude HumourUnrestricted Web Access
The Jerx downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. iPhone downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
5.0 ★
2 ratings
Measured
Ratings
2
Measured
About 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).
- 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).
Latest updates
3.0.3
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
