# Thought Patterns vs Derivative Master by ChatStick

The clearest difference is in-app purchases: Thought Patterns at none against Derivative Master by ChatStick's 1. Thought Patterns also leads on ads (none vs shown) and iOS requirement (18.0 vs 26.2). On price and device support there is nothing between them.

Both are free to download. Derivative Master by ChatStick sells 1 one-off in-app purchase. Thought Patterns asks for nothing beyond the download.

## The numbers

| Metric | Thought Patterns | Derivative Master by ChatStick |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | — |
| Size | 1 MB | 10 MB |
| Requires iOS | **18.0** | 26.2 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Raphael DeFranco](https://appshunter.io/developer/1660837108) | [ChatStick Company Limited](https://appshunter.io/developer/1165816085) |

## What reviewers say

### Thought Patterns

[App page](https://appshunter.io/ios/app/thought-patterns/id6476117134)

**Features:** macOS Compatibility

**In-app purchases:** none


### Derivative Master by ChatStick

[App page](https://appshunter.io/ios/app/derivative-master-by-chatstick/id6770905531)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Features | $2.99 | one-time |


## Frequently asked questions

### Is Thought Patterns free?

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

### Is Derivative Master by ChatStick free?

Derivative Master by ChatStick is free to download, with in-app purchases available.

### Do Thought Patterns or Derivative Master by ChatStick have ads?

Derivative Master by ChatStick shows ads; Thought Patterns 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.*