Comparison

Kotlin Programming Compiler vs Learn SwiftUI

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

Head to head
About

Kotlin Programming Compiler

Write and execute Kotlin code directly on your mobile device. This app is designed for learning and testing code snippets with features like syntax highlighting and a custom keyboard. It allows you to compile, run, and share your Kotlin files.

Highlights
  • Compile and run Kotlin programs
  • View program output and errors
  • Custom keyboard for easy input
  • Advanced source code editor
  • Syntax highlighting and line numbers
  • Open, save, import, and share files
Features
Read full description

Write Kotlin code directly on your iPhone, iPad and iPod Touch! This app is ideal for learning and testing code snippets! Kotlin is a cross-platform, statically typed, general-purpose programming language with type inference. Kotlin is designed to interoperate fully with Java, and the JVM version of its standard library depends on the Java Class Library, but type inference allows its syntax to be more concise. Kotlin mainly targets the JVM, but also compiles to JavaScript or native code (via LLVM). Kotlin is sponsored by JetBrains and Google through the Kotlin Foundation. Features: - Compile and run your program - View program output or detailed error - Custom keyboard for easy input of frequently used characters - Optimized for connecting with external physical/bluetooth keyboard - Advanced source code editor with syntax highlighting, bracket completion and line numbers - Open, save, import and share Kotlin files. Limitations: - Internet connection is required for compilation - Maximum program running time is 20s - One file can be run at a time - Some file system, network and graphics functions may be limited - This is a batch compiler; interactive programs are not supported. For example, if your program provides an input prompt, enter the input in the Input tab prior to compilation.

About

Learn SwiftUI

Learn to code with interactive mini-lessons and tutorials directly on your device. Practice writing Swift code with real-time feedback and guidance to accelerate your learning. Offers a comprehensive SwiftUI guide with search functionality for quick reference.

Highlights
  • Interactive mini-lessons
  • Real-time code checker
  • Step-by-step guidance
  • SwiftUI code examples
  • Searchable code snippets
  • Multiple SwiftUI courses
Features
Read full description

Easily learn how to code with SwiftUI directly on your iPhone or iPad! Includes over 50+ fun and fully interactive mini lessons and tutorials. WHY USE CODE SWIFT? Want to be a better writer? Write more! Want to be a better coder? Code more! Want to be great in SwiftUI? Write more code with SwsiftUI! Code Swift offers you 6 SwiftUI courses with bite-sized lessons where you have to write your own Swift code using the SwiftUI framework! You will be amazed how fast you can learn to SwiftUI! Code Swift starts with the basics of SwiftUI and assumes you have no prior experience. Code Swift is also a great resource for intermediate to advanced users because it makes it super quick and easy to instantly search for and review tutorials and code snippets for a huge variety of SwiftUI topics. Code Swift offers a totally unique experience by challenging you to write your own code from start to finish. There really is no faster and more enjoyable way to learn than writing your own code. Our real-time code checker instantly offers valuable tips and suggestions the moment you make a mistake. It is like having your own personal swift instructor sitting next to you to help you along and accelerate your learning and make sure that you won’t get frustrated, stuck, and give up. Afraid of getting stuck? Don't be! As soon as you make a mistake, you see a red exclamation mark. Just press on it to get step by step guidance and help so you are never stuck and never alone! Once you get more comfortable, you can also turn the real-time code checker off (this is great while working through the course a second time to make sure you truly know how to code). Need more help? Code Swift also acts as a SwiftUI Guide in your pocket. Have a question or need a quick refersher on a specific topic? Just use our powerful search feature to instantly find great examples and code snippets with detailed explanations. SwiftUI Courses: 1. SwiftUI Basics 2. Text View 3. Image View 4. View Stacks 5. Handling User Input 6. List View 7. Navigation View 8. Alert Views (in development) 9. Navigation (in development) 10. Transforming Views (in development) 11. Animation (in development) The first course is completely free. All other courses can be unlocked with a single in-app-purchase or a bulk purchase to unlock all content for a greatly reduced price. Once purchased, you will instantly qualify for all future additions and updates including future courses. We are just getting started and plan on adding hundreds of lessons over the coming weeks and months. If you enjoy this app and are looking forward to new lessons, please take the time to rate this app. If you have any questions or feedback, please email us at support at happymooseapps.com

Screenshots

Kotlin Programming Compiler4 screens
Learn SwiftUI4 screens

Verdict

The call

The clearest difference is rating: Kotlin Programming Compiler at 4.6 against Learn SwiftUI's 4.0. Kotlin Programming Compiler also leads on review sentiment (63% vs 42%). Learn SwiftUI's advantage is ads (none vs shown) and update cadence (every 5 days vs every 2 months). On price, in-app purchases, monetization model and device support 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. Kotlin Programming Compiler sells 1 one-off in-app purchase and Learn SwiftUI sells 7 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Kotlin Programming Compiler holds the better App Store score, 4.6 against 4.0. That said, the two scores are not equally well evidenced: Learn SwiftUI has 214 ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 63% of Kotlin Programming Compiler's written reviews are positive against 42% of Learn SwiftUI's.

UpkeepUpdate frequency

Kotlin Programming Compiler ships an update every 2 months, Learn SwiftUI every 5 days. The most recent releases landed on August 16, 2026 and September 18, 2026 respectively.

Scorecard6 real differences · 4 level
Kotlin Programming Compiler versus Learn SwiftUI: the parameters behind the verdict, then further details
ParameterKotlin Programming CompilerLearn SwiftUI
PriceFreeFree
Rating4.6 (7 ratings) — better4.0 (214 ratings)
Positive reviews62.5% of reviews — better42.4% of reviews
Number of ratings7214 — better
Update frequencyEvery 2 monthsEvery 5 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.010.0 — better
Further details — not scored
Size20 MB40 MB
Age rating4+4+
DeveloperKetan AppaHappy Moose Apps

Customer experience

Kotlin Programming Compiler

All ratings7 ratings
Positive85.7%
Neutral14.3%
Negative0.0%
Written reviews8 reviews
Positive62.5%
Neutral12.5%
Negative25.0%

Learn SwiftUI

All ratings214 ratings
Positive76.2%
Neutral4.7%
Negative19.2%
Written reviews85 reviews
Positive42.4%
Neutral10.6%
Negative47.1%

Bugs and requests

Kotlin Programming Compiler

Not enough reviews yet to summarise bugs or requests.

Learn SwiftUI

Reported bugs

10 issues
  • Black screen on app launch
  • Crashes when selecting lessons or courses
  • Crashes every 30 seconds after purchase
  • Run button masked by UI elements
  • Incorrect code validation accepting wrong answers
Show 5 more
  • Missing or incorrect image assets
  • Flickering on main screen
  • Keyboard hiding input fields
  • Incompatibility with iPhone 13 mini and smaller screens
  • Loss of access to purchased content

Requested features

10 requests
  • Visual output display of executed code
  • More advanced topics (State, Binding, Environment, ObservableObject)
  • Code snippet export to Swift Playground or documents
  • Better explanations and documentation of concepts
  • Submit button before code evaluation
Show 5 more
  • Live console for code execution
  • Multi-view navigation and animation tutorials
  • Keyboard management to prevent UI obstruction
  • Cross-device progress synchronization
  • More comprehensive content and lessons

In-app purchases

1 purchases

Kotlin Programming Compiler

One-time1
  • Upgrade$2.99
7 purchases

Learn SwiftUI

One-time7
  • Course 3$0.99
  • Course 4$0.99
  • Course 5$0.99
Show 4 more
  • Course 6$0.99
  • Course 7$0.99
  • Course 8$0.99
  • Unlock All Courses$1.99

Questions

Is Kotlin Programming Compiler free?
Kotlin Programming Compiler is free to download, with in-app purchases available.
Is Learn SwiftUI free?
Learn SwiftUI is free to download, with in-app purchases available.
Which has better reviews, Kotlin Programming Compiler or Learn SwiftUI?
Kotlin Programming Compiler is rated higher. Kotlin Programming Compiler averages 4.6 out of 5 from 7 ratings, while Learn SwiftUI averages 4.0 from 214 ratings.
Do Kotlin Programming Compiler or Learn SwiftUI have ads?
Kotlin Programming Compiler shows ads; Learn SwiftUI does not.
Which is updated more often, Kotlin Programming Compiler or Learn SwiftUI?
Kotlin Programming Compiler ships an update every 2 months, and Learn SwiftUI every 5 days. Most recently, Kotlin Programming Compiler was updated on August 16, 2026 and Learn SwiftUI on September 18, 2026.

Other comparisons