# Design Patterns for Devs vs ARMOR

The clearest difference is update cadence: ARMOR at every 2 weeks against Design Patterns for Devs's every 2 months. ARMOR also leads on iOS requirement (18.0 vs 26.0). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Design Patterns for Devs sells 1 one-off in-app purchase and ARMOR sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Design Patterns for Devs against 5.0 for ARMOR. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Design Patterns for Devs ships an update every 2 months, ARMOR every 2 weeks. The most recent releases landed on November 5, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Design Patterns for Devs | ARMOR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/design-patterns-for-devs/id6754806188/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/armor-urdf-and-robot-simulator/id6755694245/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 24 MB | 41 MB |
| Requires iOS | 26.0 | **18.0** |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | +4 | 4+ |
| Developer | [Daniel Gogozan](https://appshunter.io/developer/1664769372) | [Eliott Radcliffe](https://appshunter.io/developer/1477487767) |

## What reviewers say

### Design Patterns for Devs

[App page](https://appshunter.io/ios/app/design-patterns-for-devs/id6754806188)

Master software design patterns with interactive flashcards. This app provides comprehensive lessons, code examples, and quizzes to help developers understand and apply architectural concepts for better coding and clearer architecture.

**Highlights:** Interactive flashcards, Gang of Four pattern coverage, Real-world analogies, UML diagrams and code examples, Usage, Pros & Cons, Quizzes for retention

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime | $9.99 | one-time |


### ARMOR

[App page](https://appshunter.io/ios/app/armor-urdf-and-robot-simulator/id6755694245)

Simulate robot dynamics with a powerful physics engine and visualize them in augmented reality. Load and inspect URDF robot files, edit them, and export for desktop workflows. Ideal for engineers, students, and researchers on mobile devices.

**Highlights:** MuJoCo Physics Engine, Advanced URDF Viewer, Built-In Editor & Export, Humanoid & Spatial Robot Visualization, Robot Arm Kinematics, Augmented Reality (AR) Integration

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $4.99 | per month |
| Premium Yearly | $49.99 | per year |
| Premium Lifetime | $99.99 | one-time |


## Frequently asked questions

### Is Design Patterns for Devs free?

Design Patterns for Devs is free to download, with in-app purchases available.

### Is ARMOR free?

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

### Which has better reviews, Design Patterns for Devs or ARMOR?

Design Patterns for Devs and ARMOR are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do Design Patterns for Devs or ARMOR have ads?

Neither Design Patterns for Devs nor ARMOR shows ads.

### Which is updated more often, Design Patterns for Devs or ARMOR?

Design Patterns for Devs ships an update every 2 months, and ARMOR every 2 weeks. Most recently, Design Patterns for Devs was updated on November 5, 2026 and ARMOR on November 9, 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.*