# Design Pattern Reference vs Sewpal

The clearest difference is review sentiment: Design Pattern Reference at 100% against Sewpal's 50%. Design Pattern Reference also leads on in-app purchases (none vs 6) and iOS requirement (12.0 vs 17.0). Sewpal's advantage is price (Free vs $1.99) and update cadence (fortnightly vs every 36 months). On ads and device support there is nothing between them.

Sewpal is free to download; Design Pattern Reference costs $1.99 up front. Sewpal sells 5 in-app purchases, starting at $3.99 per 7 days. Design Pattern Reference asks for nothing beyond the download.

Design Pattern Reference ships an update every 36 months, Sewpal fortnightly. The most recent releases landed on September 22, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Design Pattern Reference | Sewpal |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[4.8 (11K ratings)](https://appshunter.io/ios/app/sewpal-sewing-pattern-and-guide/id6754315885/reviews)** |
| Number of ratings | — | **11K** |
| Positive reviews | **100.0% of reviews** | 49.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 36 months | **Fortnightly** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | — | **#54** |
| Size | 16 MB | 151 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [强 马](https://appshunter.io/developer/687218962) | [PIXELCELL.LIMITED](https://appshunter.io/developer/1639061354) |

## What reviewers say

### Design Pattern Reference

[App page](https://appshunter.io/ios/app/design-pattern-reference/id946885365)

Explore 23 essential design patterns across creational, structural, and behavioral categories. This reference app provides a comprehensive guide for software developers to understand and implement these fundamental programming concepts.

**Highlights:** 23 Design Patterns included, Creational Patterns, Structural Patterns, Behavioral Patterns, Comprehensive reference guide

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

**In-app purchases:** none


### Sewpal

[App page](https://appshunter.io/ios/app/sewpal-sewing-pattern-and-guide/id6754315885)

**Currently charting:** #54 Top Grossing · Reference, #79 Top Free · Reference (US App Store)

Learn to sew, fix, and upcycle clothing with step-by-step tutorials and AI-powered pattern generation. Snap a photo to create custom patterns, get upcycling ideas, and ask an AI coach for instant sewing advice. Perfect for beginners and experienced makers.

**Highlights:** Step-by-step sewing tutorials, AI-generated sewing patterns from photos, Upcycling suggestions and DIY ideas, AI sewing coach for instant advice, Custom pattern generation for your size, Fabric and project tracking

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SewPal Premium | $3.99 | per 7 days |
| SewPal Premium | $3.99 | per 7 days |
| SewPal Premium | $29.99 | per year |
| SewPal Premium | $29.99 | per year |
| SewPal Premium | $29.99 | per year |


## Frequently asked questions

### Is Design Pattern Reference free?

Design Pattern Reference costs $1.99, with no in-app purchases.

### Is Sewpal free?

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

### Do Design Pattern Reference or Sewpal have ads?

Neither Design Pattern Reference nor Sewpal shows ads.

### Which is updated more often, Design Pattern Reference or Sewpal?

Design Pattern Reference ships an update every 36 months, and Sewpal fortnightly. Most recently, Design Pattern Reference was updated on September 22, 2026 and Sewpal on October 1, 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.*