# PyScience Lab vs Boolean Builder by ChatStick

The clearest difference is price: Boolean Builder by ChatStick at Free against PyScience Lab's $6.99. PyScience Lab's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support there is nothing between them.

Boolean Builder by ChatStick is free to download; PyScience Lab costs $6.99 up front. Boolean Builder by ChatStick sells 1 one-off in-app purchase. PyScience Lab asks for nothing beyond the download.

## The numbers

| Metric | PyScience Lab | Boolean Builder by ChatStick |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | — |
| Size | 98 MB | 11 MB |
| Requires iOS | **16.4** | 26.2 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SimTeCon GmbH](https://appshunter.io/developer/1761797043) | [ChatStick Company Limited](https://appshunter.io/developer/1165816085) |

## What reviewers say

### PyScience Lab

[App page](https://appshunter.io/ios/app/pyscience-lab/id6737474386)

**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 PyScience Lab free?

PyScience Lab costs $6.99, 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 PyScience Lab or Boolean Builder by ChatStick have ads?

Boolean Builder by ChatStick shows ads; PyScience Lab 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.*