Comparison

Java Zertifizierung vs Octopus

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

Head to head
About

Java Zertifizierung

This app offers a free introductory chapter to learning Java programming, ideal for beginners. Full access requires booking through the FernUniversität in Hagen, leading to a university certificate upon passing an exam.

Highlights
  • Free introductory chapter
  • University-backed curriculum
  • Learn Java programming fundamentals
  • Build small programs independently
  • Online or campus exam options
  • University certificate awarded
Features
Read full description

Ideal für Studierende und Berufstätige. Diese App unterstützt den FernUni-Zertifikatskurs. Das erste Kapitel ist zum Probelesen frei verfügbar. Für den vollständigen Inhalt ist eine Buchung über das CeW der FernUniversität in Hagen erforderlich. Unter allen Programmiersprachen zählt die von James Gosling entwickelte Sprache Java heute wohl zu den bekanntesten. Durch die virtuelle Maschine der Java-Laufzeitumgebung werden die Programme plattformunabhängig. Dies und die Tatsache das Java objektorientiert und somit von Menschen gelesen werden kann, führte dazu, das Java sehr weit verbreitet ist. Insbesondere Einsteiger in der Programmierung werden um Java nicht herumkommen. Die Java-Plattform stellt eine umfassende Klassenhierarchie bereit, die das Erstellen von Netzwerk-, Grafik-, Datenbankanwendungen usw. unabhängig vom Betriebssystem unterstützt. Der Kurs richtet sich an den ambitionierten Java-Einsteiger. Vorkenntnisse in einer beliebigen anderen Programmiersprache erleichtern den Einstieg sind aber nicht zwingend notwendig. Ziel dieses Grundlagenkurses ist es, ein solides Verständnis für die Architektur von Java-Anwendungen aufzubauen. Anhand vieler Programmbeispiele und Anleitungen wird der ambitionierte Java-Einsteiger mit geringen Vorkenntnissen in die Lage versetzt, kleinere Programme selbst zu schreiben und sein Wissen selbstständig weiter zu vertiefen. Die schriftliche Prüfung kann online oder an einem Campusstandort der FernUniversität Hagen Ihrer Wahl geschrieben werden. Mit bestandener Prüfung erhalten Sie ein Hochschulzertifikat. Studierende können zudem erworbene ECTS Punkte für ein Certificate of Basic Studies bescheinigen lassen. Weitere Informationen erhalten Sie auf der Webseite der FernUniversität Hagen unter CeW (Center elektronische Weiterbildung).

About

Octopus

Learn to code in popular languages like Python, Java, Swift, and JavaScript, plus web development with HTML and CSS. Offers detailed tutorials and interactive exercises for all skill levels. Join a community of learners to advance your programming journey.

Highlights
  • Learn Python, Java, Swift, JavaScript
  • Web development with HTML and CSS
  • Detailed tutorials
  • Interactive coding exercises
  • Community collaboration
  • Courses for all levels
Features
Read full description

Start Your Adventure and Learn to Code: Embark on an enriching journey in different programming languages with our platform. Master essential languages like Python, Java, Swift, and JavaScript, and dive into web development with HTML and CSS. Our courses, tailored for all levels, aim to boost your proficiency in coding and programming. Explore Coding and Programming Essentials: Delve into the world of coding and programming through Python, Java, Swift, JavaScript, HTML, and CSS. Our detailed tutorials and hands-on exercises enhance your understanding and skills in these key languages. Master Python, Java, Swift, JavaScript, HTML, and CSS: Achieve mastery in coding and programming by exploring Python, Java, Swift, and JavaScript, alongside web technologies HTML and CSS. Our interactive exercises are designed to solidify your coding and programming capabilities. Interactive Coding and Programming Exercises: Engage in interactive coding and programming exercises across Python, Java, Swift, JavaScript, HTML, and CSS. These challenges aim to refine your skills, establishing a comprehensive foundation in coding and programming. Stay Ahead in Coding and Programming: Keep up-to-date with the latest in coding and programming. Our tutorials in Python, Java, Swift, JavaScript, HTML, and CSS ensure you remain competitive, arming you with advanced knowledge and techniques. Join Our Great Community: Become an active member of our great community. Collaborate and share insights with peers passionate about Python, Java, Swift, JavaScript, HTML, and CSS, enhancing your coding and programming journey. Advance Your Skills: Embark on your coding and programming journey, excelling in Python, Java, Swift, JavaScript, HTML, and CSS. We're dedicated to your growth, offering comprehensive resources that prepare you for the challenges ahead.

Screenshots

Java Zertifizierung4 screens
Octopus4 screens

Verdict

The call

The clearest difference is review sentiment: Octopus at 71% against Java Zertifizierung's 0%. Octopus also leads on update cadence (monthly vs every 11 months). Java Zertifizierung's advantage is in-app purchases (none vs 4) and ads (none vs shown). On price 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. Octopus sells 4 in-app purchases, starting at $9.99 per month. Java Zertifizierung asks for nothing beyond the download.

UpkeepUpdate frequency

Java Zertifizierung ships an update every 11 months, Octopus monthly. The most recent releases landed on September 24, 2026 and October 7, 2026 respectively.

Scorecard6 real differences · 4 level
Java Zertifizierung versus Octopus: the parameters behind the verdict, then further details
ParameterJava ZertifizierungOctopus
PriceFreeFree
Rating—5.0 (5 ratings) — better
Positive reviews0.0% of reviews71.2% of reviews — better
Number of ratings—5 — better
Update frequencyEvery 11 monthsMonthly — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better13.6
Further details — not scored
Size45 MB107 MB
Age rating4+4+
DeveloperEberhard HeuelAlaa CHERBIB

Customer experience

Java Zertifizierung

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Octopus

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews52 reviews
Positive71.2%
Neutral9.6%
Negative19.2%

In-app purchases

None

Java Zertifizierung

No in-app purchases

4 purchases

Octopus

Subscriptions3
  • Learn programming - 1 Month3 Days trial$9.991 Month
  • Learn programming - 3 Months3 Days trial$24.993 Months
  • Learn programming - 1 Year3 Days trial$84.991 Year
One-time1
  • Learn programming - No limits$44.99

Questions

Is Java Zertifizierung free?
Java Zertifizierung is free to download, with no in-app purchases.
Is Octopus free?
Octopus is free to download, with in-app purchases available.
Do Java Zertifizierung or Octopus have ads?
Octopus shows ads; Java Zertifizierung does not.
Which is updated more often, Java Zertifizierung or Octopus?
Java Zertifizierung ships an update every 11 months, and Octopus monthly. Most recently, Java Zertifizierung was updated on September 24, 2026 and Octopus on October 7, 2026.

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