Comparison

Design Patterns for Devs vs ARMOR

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Design Patterns for Devs

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
Read full description

Learn or recall design patterns with interactive flashcards covering every Gang of Four pattern. Whether you’re new to design patterns or looking to refresh your knowledge, this app gives you everything you need to understand and remember them effectively. Each lesson usually includes: > GoF definition > Problem & Solution > Real World Analogy > UML diagram and code example > Usage > Pros & Cons > Common Mistakes > Related Patterns > Quiz Designed for fast recall, real-world application, and long-term retention, this app helps you write better code, understand architecture more clearly, and boost your developer skills. IN-APP PURCHASES The app is free to download. Some features require a one-time purchase. LEGAL Privacy policy - https://danielgogozan.github.io/DesignPatterns-LandingPage/privacypolicy/ Terms of Use - https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

ARMOR

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
Read full description

ARMOR brings real MuJoCo physics simulation to your pocket. Load any URDF (Unified Robot Description Format) robot, simulate true dynamics, and place it in AR — directly on iPhone, iPad, and Mac. Built for robotics engineers, students, and researchers, ARMOR bridges the gap between desktop-grade simulation and mobile accessibility — inspect joint kinematics, fine-tune a humanoid's balance, or demo a collaborative robot arm, all without a workstation. KEY FEATURES: • MuJoCo Physics Engine: Leverage the industry-standard MuJoCo engine for high-fidelity physics simulations. ARMOR makes it easy to visualize joint dynamics and collisions on mobile hardware. • Advanced URDF Viewer: Load and inspect your own URDF robot files—the standard XML format produced by ROS and XACRO workflows. ARMOR handles complex links, joints, and geometries with ease, providing a comprehensive engineering view of your robot's structure. • Built-In Editor & Export: Create and edit links and joints with guided wizards, then export your project as a ROS-style URDF package or a MuJoCo MJCF file to continue your work on the desktop. • Humanoid & Spatial Robot Visualization: Perfect for visualizing cutting-edge platforms. Load models similar to the Boston Dynamics Atlas or open-source humanoids like the Reachy Mini to study their form and motion in a spatial context. • Robot Arm Kinematics: A vital tool for industrial automation and cobot development. Inspect robot arms like the ABB YuMi and other multi-axis systems with precision. • Augmented Reality (AR): Move from the screen to the real world. Place your robot models in your physical environment at 1:1 scale to assess spatial dimensions and workplace layout. • Engineering Workflow Integration: Designed for the modern robotics professional. ARMOR supports standard file formats, making it the perfect companion for ROS (Robot Operating System) workflows. WHY ARMOR? ARMOR was built by engineers, for engineers. By bridging the gap between desktop simulation and mobile accessibility, ARMOR allows you to present your robotics projects to clients, teach engineering concepts in the classroom, or debug kinematics during a field test—all from your mobile device. COMPATIBILITY: ARMOR supports a wide range of URDF configurations, including those used for humanoid robots, industrial grippers, and mobile platforms. Optimized for the latest iOS hardware to ensure smooth, fluid rendering even for complex assemblies. Disclaimer: ARMOR is an independent third-party application and is not affiliated with, sponsored by, or endorsed by Boston Dynamics, ABB, or the MuJoCo project. References to third-party trademarks and robot models are for nominative and descriptive purposes only, to indicate compatibility and visualization capabilities. All other trademarks are the property of their respective owners. Terms and Conditions: https://armor.dc-engineer.com/terms.html

Screenshots

Design Patterns for Devs4 screens
ARMOR4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard2 real differences · 8 level
Design Patterns for Devs versus ARMOR: the parameters behind the verdict, then further details
ParameterDesign Patterns for DevsARMOR
PriceFreeFree
Rating5.0 (1 ratings)5.0 (2 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings12 — better
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPadiPhone, iPad, Mac — better
Requires iOS26.018.0 — better
Further details — not scored
Size24 MB41 MB
Age rating+44+
DeveloperDaniel GogozanEliott Radcliffe

Customer experience

Design Patterns for Devs

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

ARMOR

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Design Patterns for Devs

One-time1
  • Lifetime$9.99
3 purchases

ARMOR

Subscriptions2
  • Premium Monthly$4.991 Month
  • Premium Yearly$49.991 Year
One-time1
  • Premium Lifetime$99.99

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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