# Bernstein vs Boolean Builder by ChatStick

The clearest difference is in-app purchases: Bernstein at none against Boolean Builder by ChatStick's 1. Bernstein also leads on ads (none vs shown) and iOS requirement (17.6 vs 26.2). On price and device support there is nothing between them.

Both are free to download. Boolean Builder by ChatStick sells 1 one-off in-app purchase. Bernstein asks for nothing beyond the download.

## The numbers

| Metric | Bernstein | Boolean Builder by ChatStick |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Size | 6 MB | 11 MB |
| Requires iOS | **17.6** | 26.2 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sungjun Kim](https://appshunter.io/developer/1602461985) | [ChatStick Company Limited](https://appshunter.io/developer/1165816085) |

## What reviewers say

### Bernstein

[App page](https://appshunter.io/ios/app/bernstein-vazirani-algorithm-2/id6753583715)

**Features:** macOS Compatibility

**In-app purchases:** none


### Boolean Builder by ChatStick

[App page](https://appshunter.io/ios/app/boolean-builder-by-chatstick/id6764350982)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Boolean Builder Premium | $1.99 | one-time |


## Frequently asked questions

### Is Bernstein free?

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

### Is Boolean Builder by ChatStick free?

Boolean Builder by ChatStick is free to download, with in-app purchases available.

### Do Bernstein or Boolean Builder by ChatStick have ads?

Boolean Builder by ChatStick shows ads; Bernstein does not.

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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.*