# APOD Pro vs Derivative Master by ChatStick

The clearest difference is in-app purchases: APOD Pro at none against Derivative Master by ChatStick's 1. APOD Pro also leads on ads (none vs shown) and device support (5 vs 2). On price there is nothing between them.

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

## The numbers

| Metric | APOD Pro | Derivative Master by ChatStick |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | — |
| Size | 4 MB | 10 MB |
| Requires iOS | **18.1** | 26.2 |
| Devices | **iPhone, iPad, Mac, Apple Watch, Vision Pro** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sorth LLC](https://appshunter.io/developer/290385324) | [ChatStick Company Limited](https://appshunter.io/developer/1165816085) |

## What reviewers say

### APOD Pro

[App page](https://appshunter.io/ios/app/apod-pro/id6479388186)

**Features:** Apple Watch app

**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 APOD Pro free?

APOD Pro 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 APOD Pro or Derivative Master by ChatStick have ads?

Derivative Master by ChatStick shows ads; APOD Pro 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.*