# BiasProof vs Griller

The clearest difference is update cadence: Griller at every 3 weeks against BiasProof's every 2 months. BiasProof's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. BiasProof sells 1 one-off in-app purchase and Griller sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

BiasProof ships an update every 2 months, Griller every 3 weeks. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | BiasProof | Griller |
| --- | --- | --- |
| 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 | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 10 MB | 43 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Justin Neuman](https://appshunter.io/developer/1859103444) | [Renat Bilalov](https://appshunter.io/developer/6773035343) |

## 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 |


### Griller

[App page](https://appshunter.io/ios/app/griller-ai-interview-coach/id6773035071)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $4.99 | per 7 days |
| Premium Monthly | $7.99 | per month |
| Premium Annual Subscription | $69.99 | per year |


## Frequently asked questions

### Is BiasProof free?

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

### Is Griller free?

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

### Do BiasProof or Griller have ads?

Neither BiasProof nor Griller shows ads.

### Which is updated more often, BiasProof or Griller?

BiasProof ships an update every 2 months, and Griller every 3 weeks. Most recently, BiasProof was updated on October 30, 2026 and Griller on October 31, 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.*