The Jerx vs SEKITAN
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
The Jerx
This utility app enables users to perform various mentalism and magic effects. It allows for creating illusions of memory loss, cognitive impairment, mind-reading, and predictions. Some effects may require additional physical materials.
- Memory loss illusions
- Cognitive impairment effects
- Mind reading capabilities
- Prediction effects
- Dual-reality illusions
- Thought implantation
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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).
SEKITAN
A specialized utility for professional mentalists and stage performers to manage live performance routines. Designed exclusively for modern edge-to-edge iPhone displays.
- Live performance routine management
- Specialized utility for mentalists
- Designed for edge-to-edge displays
- Optimized for iPhone X and newer
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IMPORTANT HARDWARE NOTICE: SEKITAN is strictly designed for modern edge-to-edge displays (iPhone X, 11, 12, 13, 14, 15, 16 series). It is NOT optimized for and does NOT properly support iPhone SE or older models with a 16:9 screen ratio. SEKITAN is a specialized utility application designed exclusively for professional mentalists and stage performers to seamlessly manage routines during live performances.
Screenshots
Verdict
The clearest difference is price: SEKITAN at Free against The Jerx's $89.99. SEKITAN also leads on review sentiment (100% vs 67%) and update cadence (every 5 days vs every 4 months). The Jerx's advantage is in-app purchases (none vs 1) and ratings volume (11 vs 1). On rating, ads, monetization model and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
SEKITAN is free to download; The Jerx costs $89.99 up front. SEKITAN sells 1 one-off in-app purchase. The Jerx asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.9 for The Jerx against 5.0 for SEKITAN. That said, the two scores are not equally well evidenced: The Jerx has 11 ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 67% of The Jerx's written reviews are positive against 100% of SEKITAN's.
The Jerx ships an update every 4 months, SEKITAN every 5 days. The most recent releases landed on October 9, 2026 and October 14, 2026 respectively.
| Parameter | The Jerx | SEKITAN |
|---|---|---|
| Price | $89.99 | Free — better |
| Rating | 4.9 (11 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 66.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 11 — better | 1 |
| Update frequency | Every 4 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Paid |
| Devices | iPhone | iPhone, Apple Watch — better |
| Requires iOS | 16.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 4 MB | 24 MB |
| Age rating | 17+ | 4+ |
| Developer | Marc Kerstein | Thanh Long Bach |
Customer experience
The Jerx
SEKITAN
In-app purchases
The Jerx
No in-app purchases
SEKITAN
- SEKITAN PRO$99.99
