Comparison

Java und Datenbanken vs IQ Test Challenge

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

Head to head
About

Java und Datenbanken

Features
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Wir befinden uns schon seit einigen Jahren in der dritten Epoche der Wirtschafts- und Gesellschaftsformen, dem sogenannten Informationszeitalter. Die stetig wachsende Menge an Informationen muss gebündelt und verwaltet werden. Dafür bieten Datenbanken eine effiziente Möglichkeit. Die Programmiersprache Java eignet sich durch integrierte Programmierschnittstellen hervorragend zur Arbeit mit Datenbanken. Der Kurs baut auf dem Grundkurs "Java - Konzepte, Techniken und Programmierung" der FernUniversität auf und setzt in jedem Fall Basiskenntnisse in Java voraus. Er richtet sich an den professionellen Java-Programmierer sowie an den ambitionierten Java-Amateur, der seine Kenntnisse um die Arbeit mit Datenbanken erweitern möchte. In diesem Kurs werden die wichtigsten Java-Technologien zur Anwendungsentwicklung für Datenbanken (wie Oracle, MySQL und MS Access) vorgestellt. Neben JDBC (Java Database Connectivity) in Kombination mit der Abfragesprache SQL behandelt der Kurs die Technologien JavaBeans und JDO (Java Data Objects). 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

IQ Test Challenge

Features
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How smart are you – compared to everyone else? IQ Test Challenge is a free IQ test and brain training app with classic intelligence puzzles. After every test you see where you stand among all players. With the Club membership you also see where you stand among people like you, by country, age group, gender and education. THE IQ TEST Ten tasks across the classic categories, getting harder as you go. No time limit – think as long as you like. At the end you review your answers, submit them and see your score, your IQ estimate with its range and your percentile on the distribution curve of all players. Then go through every task with its solution – Club members also get an explanation for each one. SEVEN CATEGORIES OF CLASSIC PUZZLES - Patterns: matrices, figure series - Numbers: number series, number grids - Spatial: cube nets, rotation vs. mirror image - Memory: figure grids, n-back - Logic: syllogisms, seating plans - Words: analogies, odd word out - Speed: symbol search, colour-word test Every puzzle is generated fresh – you will not run out of tasks. EXAM PREPARATION Practise for aptitude tests, employment tests and entrance exams: 21 tasks from all seven categories, 20 minutes, no feedback between the tasks – like a real test. Afterwards the error analysis shows your gaps per category compared with other players, and you train exactly there. One exam per week is included; with the Club membership it is unlimited and comes with your history. A practice simulation, not an official test. BRAIN TRAINING WITH A REAL COMPARISON Brain training that shows you where you really stand: train memory, logic, numbers, patterns, spatial thinking, words and speed, and compare yourself with real players instead of only with your own past scores. The weakness analysis builds a brain training session from your weakest task types. With the Club membership: a training plan with your progress per category and unlimited training. COMPARE YOURSELF The comparison is the heart of the app. See how your result compares with the whole community. With the Club membership you also see how many players solve each task and which answer others picked. Your data stays anonymous: no account, no sign-up, and your profile details are optional. MORE WAYS TO PLAY - Daily challenge: five tasks, the same for everyone in the world, with a daily ranking - Sudden death: one task after another, one mistake ends the run. With leaderboards worldwide, per country and per week (with Club membership) - Duel: challenge friends with a code – same five tasks, who scores more? - Training: brain training for a single category, without a score - Statistics: your strengths and weaknesses per category, history and IQ estimate over all tests FREE, NO ADS The IQ test, brain training and all game modes are free and without ads: three IQ tests on your first day, then one test and one sudden death run per day. The Club membership (monthly or yearly) unlocks more: explanations for every task, up to five IQ tests a day, unlimited sudden death, duels and training, the sudden death leaderboards, how many players solve each task and which answer others picked, your percentile in every comparison group, all details of your past tests and a crown in the rankings – and you support the further development of the app. The subscription renews automatically and can be cancelled at any time in your store account settings. Note: IQ Test Challenge is made for entertainment and self-assessment. It is not a clinical or diagnostic intelligence test. Privacy policy: https://challenge.iqtest-app.de/privacy-policy-app/ Terms of use: https://challenge.iqtest-app.de/terms-and-conditions/ License agreement (Apple standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Java und Datenbanken4 screens
IQ Test Challenge4 screens

Verdict

The call

The clearest difference is in-app purchases: Java und Datenbanken at none against IQ Test Challenge's 2. Java und Datenbanken also leads on iOS requirement (11.0 vs 15.0). IQ Test Challenge's advantage is update cadence (every 3 days vs every 16 months). On price, ads 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. IQ Test Challenge sells 2 in-app purchases, starting at $1.99 per month. Java und Datenbanken asks for nothing beyond the download.

UpkeepUpdate frequency

Java und Datenbanken ships an update every 16 months, IQ Test Challenge every 3 days. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

Scorecard3 real differences · 3 level
Java und Datenbanken versus IQ Test Challenge: the parameters behind the verdict, then further details
ParameterJava und DatenbankenIQ Test Challenge
PriceFreeFree
Update frequencyEvery 16 monthsEvery 3 days — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better15.0
Further details — not scored
Size13 MB16 MB
Age rating4+4+
DeveloperEberhard HeuelPaul Stelzer

In-app purchases

None

Java und Datenbanken

No in-app purchases

2 purchases

IQ Test Challenge

Subscriptions2
  • Club Monthly$1.991 Month
  • Club Yearly3 Days trial$8.991 Year

Questions

Is Java und Datenbanken free?
Java und Datenbanken is free to download, with no in-app purchases.
Is IQ Test Challenge free?
IQ Test Challenge is free to download, with in-app purchases available.
Do Java und Datenbanken or IQ Test Challenge have ads?
Neither Java und Datenbanken nor IQ Test Challenge shows ads.
Which is updated more often, Java und Datenbanken or IQ Test Challenge?
Java und Datenbanken ships an update every 16 months, and IQ Test Challenge every 3 days. Most recently, Java und Datenbanken was updated on October 26, 2026 and IQ Test Challenge on October 25, 2026.

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