# The Jerx vs Brain Guessing Game

The clearest difference is price: Brain Guessing Game at $39.99 against The Jerx's $89.99. Brain Guessing Game also leads on review sentiment (100% vs 67%) and update cadence (every 3 weeks vs every 4 months). The Jerx's advantage is ratings volume (11 vs 2). On rating, ads, in-app purchases and monetization model there is nothing between them.

The Jerx costs $89.99 and Brain Guessing Game $39.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.9 for The Jerx against 5.0 for Brain Guessing Game. That said, the two scores are not equally well evidenced: The Jerx has 11 ratings behind it against 2, 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 Brain Guessing Game's.

The Jerx ships an update every 4 months, Brain Guessing Game every 3 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | The Jerx | Brain Guessing Game |
| --- | --- | --- |
| Price | $89.99 | **$39.99** |
| Rating | [4.9 (11 ratings)](https://appshunter.io/ios/app/the-jerx/id1082369141/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/brain-guessing-game/id6498151646/reviews)** |
| Number of ratings | **11** | 2 |
| Positive reviews | 66.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | Paid | Paid |
| Size | 4 MB | 87 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 17+ | 17+ |
| Developer | [Marc Kerstein](https://appshunter.io/developer/821255617) | [Penguin Magic](https://appshunter.io/developer/952840047) |

## What reviewers say

### The Jerx

[App page](https://appshunter.io/ios/app/the-jerx/id1082369141)

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.

**Highlights:** Memory loss illusions, Cognitive impairment effects, Mind reading capabilities, Prediction effects, Dual-reality illusions, Thought implantation

**In-app purchases:** none


### Brain Guessing Game

[App page](https://appshunter.io/ios/app/brain-guessing-game/id6498151646)

Engage in a clever card guessing game with a friend. This app generates unique images to reveal a chosen card in an astonishing way. Explore various animations and a calibration mode for advanced reveals.

**Highlights:** Interactive card guessing, Animated reveals, Image generation for reveals, Calibration mode for advanced effects, Easy-to-use interface, Novel playing card reveal

**In-app purchases:** none


## Frequently asked questions

### Is The Jerx free?

The Jerx costs $89.99, with no in-app purchases.

### Is Brain Guessing Game free?

Brain Guessing Game costs $39.99, with no in-app purchases.

### Which has better reviews, The Jerx or Brain Guessing Game?

Brain Guessing Game is rated higher. The Jerx averages 4.9 out of 5 from 11 ratings, while Brain Guessing Game averages 5.0 from 2 ratings.

### Do The Jerx or Brain Guessing Game have ads?

Neither The Jerx nor Brain Guessing Game shows ads.

### Which is updated more often, The Jerx or Brain Guessing Game?

The Jerx ships an update every 4 months, and Brain Guessing Game every 3 weeks. Most recently, The Jerx was updated on October 24, 2026 and Brain Guessing Game on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*