# Patternum vs Carzu

The clearest difference is in-app purchases: Patternum at none against Carzu's 3. Patternum also leads on iOS requirement (12.4 vs 18.0). Carzu's advantage is update cadence (every 3 weeks vs every 6 months). On price, ads and device support there is nothing between them.

Both are free to download. Carzu sells 3 in-app purchases, starting at $1.99 per 7 days. Patternum asks for nothing beyond the download.

Patternum ships an update every 6 months, Carzu every 3 weeks. The most recent releases landed on September 7, 2026 and February 21, 2026 respectively.

## The numbers

| Metric | Patternum | Carzu |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.4 (25 ratings)](https://appshunter.io/ios/app/patternum-pattern-creator/id1536002920/reviews)** | — |
| Number of ratings | **25** | — |
| Positive reviews | 54.5% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 90 MB | 18 MB |
| Requires iOS | **12.4** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [AnnapurnApp Technologies UG haftungsbeschrankt](https://appshunter.io/developer/1227854970) | [Niamh Coleman](https://appshunter.io/developer/1789847720) |

## What reviewers say

### Patternum

[App page](https://appshunter.io/ios/app/patternum-pattern-creator/id1536002920)

Easily create interactive and responsive knitting and crochet patterns. Add detailed information, manage sizes, and generate charts with custom symbols. Share your creations as PDFs or within the app.

**Highlights:** Interactive pattern creation, PDF pattern export, Gauge, glossary, yarn, and needle details generator, Size management system, Customizable chart generator, Add text, images, and videos to patterns, Private and public pattern sharing

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

**In-app purchases:** none


### Carzu

[App page](https://appshunter.io/ios/app/carzu/id6747754909)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $1.99 | per 7 days |
| Monthly | $3.99 | per month |
| Yearly | $34.99 | per year |


## Frequently asked questions

### Is Patternum free?

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

### Is Carzu free?

Carzu is free to download, with in-app purchases available.

### Do Patternum or Carzu have ads?

Neither Patternum nor Carzu shows ads.

### Which is updated more often, Patternum or Carzu?

Patternum ships an update every 6 months, and Carzu every 3 weeks. Most recently, Patternum was updated on September 7, 2026 and Carzu on February 21, 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.*