# BiasProof vs Predicate Logic Foundations

The clearest difference is in-app purchases: Predicate Logic Foundations at none against BiasProof's 1. Predicate Logic Foundations also leads on iOS requirement (15.1 vs 17.6). On price, ads and device support there is nothing between them.

Both are free to download. BiasProof sells 1 one-off in-app purchase. Predicate Logic Foundations asks for nothing beyond the download.

## The numbers

| Metric | BiasProof | Predicate Logic Foundations |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/biasproof/id6756802032/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 10 MB | 38 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Justin Neuman](https://appshunter.io/developer/1859103444) | [AFTW LLC](https://appshunter.io/developer/1886356149) |

## What reviewers say

### BiasProof

[App page](https://appshunter.io/ios/app/biasproof/id6756802032)

This app gamifies cognitive bias training by presenting realistic scenarios to help users identify and resist emotional traps, cognitive errors, and modern scams. It aims to build measurable resistance to thinking pitfalls that affect decisions, relationships, and finances.

**Highlights:** Gamified mental calibration, Realistic scenario simulations, Identification of emotional traps and scams, Measurable resistance tracking, Progress tracking and leaderboards, Daily habit building

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BiasProof Pro - LIfetime Access | $4.99 | one-time |


### Predicate Logic Foundations

[App page](https://appshunter.io/ios/app/predicate-logic-foundations/id6773451459)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is BiasProof free?

BiasProof is free to download, with in-app purchases available.

### Is Predicate Logic Foundations free?

Predicate Logic Foundations is free to download, with no in-app purchases.

### Do BiasProof or Predicate Logic Foundations have ads?

Neither BiasProof nor Predicate Logic Foundations shows ads.

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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.*