# Cognitive Biases vs BoB Tools

The clearest difference is in-app purchases: Cognitive Biases at none against BoB Tools's 3. BoB Tools's advantage is update cadence (weekly vs every 40 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. BoB Tools sells 3 in-app purchases, starting at $4.99 per month. Cognitive Biases asks for nothing beyond the download.

Cognitive Biases ships an update every 40 months, BoB Tools weekly. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Cognitive Biases | BoB Tools |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/cognitive-biases/id1535402725/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 40 months | **Weekly** |
| Monetization | Free | — |
| Size | 22 MB | 61 MB |
| Requires iOS | 16 | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Shapes.io Limited](https://appshunter.io/developer/1535402727) | [BOB Tools LLP](https://appshunter.io/developer/1728442813) |

## What reviewers say

### Cognitive Biases

[App page](https://appshunter.io/ios/app/cognitive-biases/id1535402725)

Explore common cognitive biases with clear explanations and visual examples. This tool helps UX designers, product managers, and decision-makers refine their instincts and make more informed choices.

**Highlights:** Curated list of cognitive biases, Visual illustrations for each bias, Concise, jargon-free explanations, Bookmark favorite biases, Tailored for product design and management

**Features:** macOS Compatibility

**In-app purchases:** none


### BoB Tools

[App page](https://appshunter.io/ios/app/bob-tools/id6476977164)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Personal | $4.99 | per month |
| Advanced | $24.99 | per month |
| Business | $74.99 | per month |


## Frequently asked questions

### Is Cognitive Biases free?

Cognitive Biases is free to download, with no in-app purchases.

### Is BoB Tools free?

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

### Do Cognitive Biases or BoB Tools have ads?

Neither Cognitive Biases nor BoB Tools shows ads.

### Which is updated more often, Cognitive Biases or BoB Tools?

Cognitive Biases ships an update every 40 months, and BoB Tools weekly. Most recently, Cognitive Biases was updated on October 21, 2026 and BoB Tools 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.*