Comparison

DUX vs Codalingo

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

Head to head
About

DUX

Master user experience design with a comprehensive guide to design principles. Explore interactive examples, case studies, and practical tips to enhance your digital creations. Ideal for designers and enthusiasts looking to create captivating user experiences.

Highlights
  • Comprehensive design principles
  • Interactive learning modules
  • Practical implementation tips
  • User-friendly interface
  • Case studies and examples
Features
Read full description

Unlock the secrets to crafting remarkable user experiences with DUX, your ultimate guide to design principles. Whether you're a seasoned UX designer, a budding enthusiast, or someone eager to enhance their digital creations, this app is your go-to resource for mastering the art and science of user-centered design. Features: - Comprehensive Collection: Access a curated compilation of fundamental design principles based on psychological insights, user behavior studies, and real-world applications. - Interactive Learning: Dive into each law with interactive examples, case studies, and practical applications to deepen your understanding and improve your design skills. - Practical Guidance: Receive actionable tips and best practices for implementing each law into your design projects, ensuring optimal user engagement and satisfaction. - User-Friendly Interface: Navigate effortlessly through the app's intuitive interface, designed for seamless exploration and easy accessibility to content. Whether you're designing websites, mobile apps, or digital interfaces, DUX equips you with the knowledge and tools to create experiences that captivate and delight users. Download now and revolutionize your approach to user experience design! Terms of Use: https://dux-lab.com/terms-of-use

About

Codalingo

Master Dart and Flutter with interactive quizzes and diverse question formats. Track your progress on the leaderboard and review tricky concepts. Offers a dynamic learning experience for all skill levels.

Highlights
  • Interactive quizzes
  • Diverse question formats
  • Leaderboard
  • Progress review
  • Targeted practice
  • Customizable challenges
Features
Read full description

Codalingo turns learning to code into something you'll actually look forward to. Master Dart and Flutter — the language and framework behind millions of beautiful mobile apps — through bite-sized, gamified lessons you can finish in minutes a day. No boring textbooks. No complicated setup. Just open the app, write real code, and watch your skills grow. LEARN BY DOING - Write and run real Dart code right on your phone with the built-in Playground — no laptop required - Bite-sized lessons take you from "Hello, World" to building your first Flutter app, step by step - Multiple question types — practice, true/false, guess-the-word and more — keep every session fresh PRACTICE THAT STICKS - End-of-level coding challenges test what you've actually learned - A personal Review Zone targets the exact topics you find hardest - Daily quizzes keep your knowledge sharp STAY MOTIVATED - Build a daily streak and keep your momentum going - Earn coins, unlock badges and climb the leaderboards - Go head-to-head in challenges and prove your skills BUILT FOR EVERY LEVEL Whether you've never written a line of code or you're brushing up on Flutter widgets, Codalingo meets you where you are and grows with you — from absolute beginner to confident developer. WHY CODALINGO? - Learn the modern, in-demand Dart & Flutter stack used by top apps - Designed to fit real life — make progress in just five minutes a day - Friendly, gamified and genuinely fun Start coding for free today. Your future as a developer begins with a single lesson. — Codalingo Premium — Unlock unlimited lessons, remove ads and accelerate your progress with a Premium subscription. Payment is charged to your Apple ID at confirmation of purchase. Subscriptions automatically renew unless canceled at least 24 hours before the end of the current period. Manage or cancel anytime in your account settings.

Screenshots

DUX4 screens
Codalingo4 screens

Verdict

The call

The clearest difference is review sentiment: DUX at 100% against Codalingo's 43%. DUX also leads on rating (5.0 vs 4.3) and ads (none vs shown). Codalingo's advantage is iOS requirement (15.6 vs 17.0). On price, ratings volume, update cadence and in-app purchases 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. DUX sells 8 in-app purchases, starting at $1.99 per month and Codalingo sells 14 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

DUX holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 9 and 20 respectively. Written reviews point the same way: 100% of DUX's written reviews are positive against 43% of Codalingo's.

UpkeepUpdate frequency

DUX ships an update every 3 months, Codalingo every 4 months. The most recent releases landed on September 20, 2026 and October 2, 2026 respectively.

Scorecard4 real differences · 6 level
DUX versus Codalingo: the parameters behind the verdict, then further details
ParameterDUXCodalingo
PriceFreeFree
Rating5.0 (9 ratings) — better4.3 (20 ratings)
Positive reviews100.0% of reviews — better42.9% of reviews
Number of ratings920 — better
Update frequencyEvery 3 months — betterEvery 4 months
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.6 — better
Further details — not scored
Size48 MB113 MB
Age rating4+4+
DeveloperAmirHossein GolmohammadiAmmar Khatib

Customer experience

DUX

All ratings9 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Codalingo

All ratings20 ratings
Positive80.0%
Neutral5.0%
Negative15.0%
Written reviews7 reviews
Positive42.9%
Neutral14.3%
Negative42.9%

In-app purchases

8 purchases

DUX

Subscriptions3
  • Pro Account - 1 Month$1.991 Month
  • Pro Account - 3 Month$5.993 Months
  • Pro Account - Unlimited Hearts$7.991 Year
One-time5
  • 50 Dux Points$0.99
  • 250 Dux Points$3.99
  • Extra Lesson$3.99
Show 2 more
  • 500 Dux Points$7.99
  • 1000 Dux Points$14.99
14 purchases

Codalingo

Subscriptions8
  • Monthly Premium$1.991 Month
  • Yearly Premium with discount$4.991 Year
  • Premium Month$6.991 Month
Show 5 more
  • Yearly Premium 30% off$9.991 Year
  • Yearly Premium (Offer & Trial)7 Days trial$9.991 Year
  • Yearly Premium7 Days trial$17.991 Year
  • 6 months Premium$24.996 Months
  • Premium Year$29.991 Year
One-time6
  • Remove ads$1.99
  • 1 Premium Category$1.99
  • 2 Premium Categories$2.99
Show 3 more
  • Unlock Premium$4.99
  • 5 Premium Categories$4.99
  • Lifetime$49.99

Questions

Is DUX free?
DUX is free to download, with in-app purchases available.
Is Codalingo free?
Codalingo is free to download, with in-app purchases available.
Which has better reviews, DUX or Codalingo?
DUX is rated higher. DUX averages 5.0 out of 5 from 9 ratings, while Codalingo averages 4.3 from 20 ratings.
Do DUX or Codalingo have ads?
Codalingo shows ads; DUX does not.
Which is updated more often, DUX or Codalingo?
DUX ships an update every 3 months, and Codalingo every 4 months. Most recently, DUX was updated on September 20, 2026 and Codalingo on October 2, 2026.

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