# Contrast Cards & Patterns vs DenkWeg Eiserner Vorhang

The clearest difference is in-app purchases: DenkWeg Eiserner Vorhang at none against Contrast Cards & Patterns's 3. DenkWeg Eiserner Vorhang also leads on ads (none vs shown) and update cadence (every 4 days vs every 2 weeks). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Contrast Cards & Patterns sells 3 one-off in-app purchases. DenkWeg Eiserner Vorhang asks for nothing beyond the download.

Contrast Cards & Patterns ships an update every 2 weeks, DenkWeg Eiserner Vorhang every 4 days. The most recent releases landed on September 10, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Contrast Cards & Patterns | DenkWeg Eiserner Vorhang |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Every 4 days** |
| Size | 64 MB | 94 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Nancy Bullmann](https://appshunter.io/developer/1884136587) | [DenkStein Eiserner Vorhang](https://appshunter.io/developer/6786847885) |

## What reviewers say

### Contrast Cards & Patterns

[App page](https://appshunter.io/ios/app/contrast-cards-and-patterns/id6760367901)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Wunderblick - Print | $0.99 | one-time |
| Wunderblick - Premium | $2.99 | one-time |
| Wunderblick - Bundle | $4.99 | one-time |


### DenkWeg Eiserner Vorhang

[App page](https://appshunter.io/ios/app/denkweg-eiserner-vorhang/id6786847883)

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

**In-app purchases:** none


## Frequently asked questions

### Is Contrast Cards & Patterns free?

Contrast Cards & Patterns is free to download, with in-app purchases available.

### Is DenkWeg Eiserner Vorhang free?

DenkWeg Eiserner Vorhang is free to download, with no in-app purchases.

### Do Contrast Cards & Patterns or DenkWeg Eiserner Vorhang have ads?

Contrast Cards & Patterns shows ads; DenkWeg Eiserner Vorhang does not.

### Which is updated more often, Contrast Cards & Patterns or DenkWeg Eiserner Vorhang?

Contrast Cards & Patterns ships an update every 2 weeks, and DenkWeg Eiserner Vorhang every 4 days. Most recently, Contrast Cards & Patterns was updated on September 10, 2026 and DenkWeg Eiserner Vorhang on September 29, 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.*