Comparison

Sololearn vs Koenig Students (LET)

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

Head to head
About

Sololearn

Learn programming languages like Python, Java, and C# through interactive lessons and hands-on practice. This app offers bite-sized courses, coding challenges, and AI-powered support to help you build practical coding skills on the go. Join millions of learners worldwide advancing their careers and creating real-world solutions.

Highlights
  • Interactive coding lessons
  • Hands-on coding exercises
  • AI-powered coding support
  • Mobile code editor
  • Community support
  • Personalized learning paths
Features
Read full description

Start learning to code with Sololearn, the #1 app for learning programming on the go! Created by top educators and tech experts, Sololearn offers interactive lessons and hands-on practice in over 20 programming languages, including Python, JavaScript, SQL, Java, C#, and more. Join over 35 million learners worldwide building skills, advancing careers, and turning ideas into real-world solutions with Sololearn's community-driven, beginner-friendly courses. Ready to start your coding journey? What You Get with Sololearn • 4 Career Tracks & 20+ Full Courses – Dive into thousands of coding lessons and hands-on coding exercises, crafted in a bite-sized, engaging format. Ideal for future developers and coding enthusiasts alike! • Practice from Lesson One – Start coding right away with real-world projects, interactive coding games, and challenges that make learning fun. With engaging content in Python, JavaScript, HTML, CSS, SQL, and more, Sololearn helps you build practical skills from day one. • Code with AI from Lesson One – Begin your coding journey with AI-powered support. As AI becomes integral to development, Sololearn ensures you’re ready with skills all modern developers need. • Real-Time Support When You Need It – Stuck? Get help within minutes! Tap into our supportive community or ask Kodie, our in-app teacher, for instant, AI-powered guidance on any coding challenge. • Personalized Learning Just for You – Sololearn adapts to your pace, preferences, and skill level, tailoring a learning plan that fits you. Progress through coding lessons at your own speed with content customized to match your goals and learning style. • Code Anytime, Anywhere – Practice coding anytime with Sololearn’s mobile code editor. From Python to JavaScript and more, keep learning and coding wherever you are. • Powered by Learning Science – Sololearn strikes the perfect balance of theory and practice with spaced repetition, real-world challenges, and the right level of difficulty, all designed to maximize retention and make coding stick What 35M+ users love about Sololearn • Engaging, hands-on lessons for real-world coding • Learning made super easy • Wide variety of coding courses • Perfect for beginners & pros alike • Learn anywhere with mobile coding What the Media Says About Us - "A profound impact on millions of people's financial futures." – TechCrunch - "Hundreds of different quizzes and activities." – Forbes - "An enjoyable environment for infinite professional growth." – TechCrunch HOW DOES IT WORK? With Sololearn, you can start learning to code for free. However, to unlock access to all features, you’ll need to enable a free Pro trial. If you choose not to cancel at least 24 hours before the end of the trial, you will automatically be charged the price shown on the payment screen for your selected subscription period. Don’t worry—the App Store will remind you when your free trial is nearing its end. The Sololearn Pro subscription renews automatically at the end of each period (weekly, monthly, or yearly, depending on your choice) until you cancel. Canceling your subscription will disable automatic renewal, but you’ll still have access to all your Pro features until the end of the current subscription period. Looking for even more? Our Max subscription includes exclusive Learn AI content with 15 courses designed to boost your AI-driven skills. Master data analytics, data visualization, writing and brainstorming with AI, SEO optimization, and much more with cutting-edge tools to accelerate your growth. Please note: Deleting the app does not cancel your subscription. Terms of Use: https://www.sololearn.com/en/terms-of-use Privacy Policy: https://www.sololearn.com/en/privacy-policy/ Contact Us For any questions or suggestions on how to make your experience better, reach out to us at info@sololearn.com

About

Koenig Students (LET)

This app provides a comprehensive testing experience for learners, offering a variety of question types and detailed progress reports. Users can access tests tailored to their courses and review solutions to enhance their understanding.

Highlights
  • Take course-specific tests
  • Attempt long-answer and multiple-choice questions
  • Download detailed test reports
  • View solutions to test questions
  • Track learning progress
Features
Read full description

Koenig Kustomer enhances learning with course specific test & detailed reports. Koenig Kustomer, crafted by Koenig Solutions, is designed to support learners by providing a seamless and efficient testing experience. Currently, the app hosts Qubits, offering learners a comprehensive tool to assess and enhance their skills. The Koenig Kustomer App currently offers the following features: 1. Take Tests - Access a range of tests tailored to your learning needs. 2. Question Types - Attempt both long-answer and multiple-choice questions, covering various learning objectives. 3. Download Test Reports - Obtain detailed test reports to track your progress and identify areas for improvement. 4. View Solutions - Access solutions to all test questions, helping you learn from each answer and strengthen your understanding.

Screenshots

Sololearn4 screens
Koenig Students (LET)4 screens

Verdict

The call

The clearest difference is review sentiment: Sololearn at 70% against Koenig Students (LET)'s 0%. Sololearn also leads on rating (4.8 vs 1.0) and ratings volume (82K vs 1). Koenig Students (LET)'s advantage is in-app purchases (none vs 14) and ads (none vs shown). On price, update cadence 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. Sololearn sells 12 in-app purchases, starting at $6.99 per month. Koenig Students (LET) asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Sololearn holds the better App Store score, 4.8 against 1.0. That said, the two scores are not equally well evidenced: Sololearn has 82K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 70% of Sololearn's written reviews are positive against 0% of Koenig Students (LET)'s.

UpkeepUpdate frequency

Sololearn ships an update every 2 weeks, Koenig Students (LET) weekly. The most recent releases landed on October 21, 2026 and October 8, 2026 respectively.

Scorecard7 real differences · 3 level
Sololearn versus Koenig Students (LET): the parameters behind the verdict, then further details
ParameterSololearnKoenig Students (LET)
PriceFreeFree
Rating4.8 (82K ratings) — better1.0 (1 ratings)
Positive reviews69.9% of reviews — better0.0% of reviews
Number of ratings82K — better1
Update frequencyEvery 2 weeksWeekly — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size130 MB32 MB
Age rating4+4+
DeveloperSololearn IncKoenig Solutions Private Limited

Customer experience

Sololearn

All ratings81,710 ratings
Positive96.1%
Neutral2.1%
Negative1.8%
Written reviews2,149 reviews
Positive69.9%
Neutral9.4%
Negative20.8%

Koenig Students (LET)

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Bugs and requests

Sololearn

Reported bugs

5 issues
  • Incorrect test answers even when the code is correct
  • Inability to enter certain characters or syntax correctly
  • Lessons not saving progress properly
  • Landscape mode not supported on tablets
  • Frequent crashes or freezes

Requested features

6 requests
  • Add more advanced courses and content
  • Improve code editor and IDE functionality
  • Implement better explanations and feedback for incorrect answers
  • Add more programming languages like Lua
  • Improve search and navigation within the app
Show 1 more
  • Provide offline mode for learning

Koenig Students (LET)

Not enough reviews yet to summarise bugs or requests.

In-app purchases

12 purchases

Sololearn

Subscriptions12
  • Sololearn PRO Monthly3 Days trial$6.991 Month
  • SoloLearn PRO Monthly$6.991 Month
  • Sololearn PRO Monthly2 variants$12.991 Month
Show 9 more
  • SoloLearn PRO Annual3 Days trial$47.991 Year
  • PRO Annual (14 days trial)14 Days trial$47.991 Year
  • SoloLearn PRO Annual14 Days trial$59.991 Year
  • Sololearn PRO Annual14 Days trial$69.991 Year
  • SoloLearn PRO Annual$69.991 Year
  • Sololearn PRO Annual14 Days trial$79.991 Year
  • Sololearn PRO Annual7 Days trial$79.991 Year
  • Full access to AI courses7 Days trial$97.991 Year
  • Sololearn MAX14 Days trial$119.991 Year
None

Koenig Students (LET)

No in-app purchases

Questions

Is Sololearn free?
Sololearn is free to download, with in-app purchases available.
Is Koenig Students (LET) free?
Koenig Students (LET) is free to download, with no in-app purchases.
Which has better reviews, Sololearn or Koenig Students (LET)?
Sololearn is rated higher. Sololearn averages 4.8 out of 5 from 82K ratings, while Koenig Students (LET) averages 1.0 from 1 ratings.
Do Sololearn or Koenig Students (LET) have ads?
Sololearn shows ads; Koenig Students (LET) does not.
Which is updated more often, Sololearn or Koenig Students (LET)?
Sololearn ships an update every 2 weeks, and Koenig Students (LET) weekly. Most recently, Sololearn was updated on October 21, 2026 and Koenig Students (LET) on October 8, 2026.

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