X vs Number Divider
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
X
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Die App beinhaltet ein mathematisches Lernspiel, welches explizit für den Einsatz im Mathematikunterricht der 7. Klasse entwickelt wurde. Im Spiel steuern die Spieler:innen einen fiktiven Charakter namens X-Bert durch eine Welt voller Zahlen. Ziel des Spiels ist es, X-Bert dabei zu helfen, den ultimativen Snack zu finden. In bekannter Pac-Man-Manier sammeln die Spieler:innen in insgesamt 42 verschiedenen Labyrinthen, die darin verstreuten Zahlen ein. Diese werden, je nachdem, ob sich X-Bert auf einem grünen oder roten Feld befindet, zu einem Gesamtwert addiert oder subtrahiert. Ziel ist es dabei, durch das geschickte Einsammeln der Zahlen einen vorgegebenen Termwert zu erreichen. Spielerisch lösen die Spieler:innen somit mathematische Problemsituationen und können intuitiv Rechengesetze und Eigenschaften rationaler Zahlen entdecken, einüben und über diese reflektieren. Das Spiel fördert dabei vor allem das vorausschauende Denken, das begründete Treffen von Entscheidungen sowie das Kopfrechnen. Spieler:innen müssen so erkennen, welche Zahlen sie weiterbringen und welche Wege sie zur Erreichung des Ziels gehen müssen. Durch besondere Gegenstände und Felder, wie beispielsweise Portale, Laufbänder und Schalter bietet das Spiel dabei einen hohen Grad an Abwechslung und ein breites Spektrum an vielseitigen Problemsituationen. Durch die Möglichkeit, jedes Level jederzeit neu zu beginnen, wird das Erkunden und Ausprobieren im Spiel besonders gefördert. Im Spiel gilt es für die Spieler:innen über 80 Sterne zu sammeln und 20 Charaktere freizuschalten. Hierbei finden gleichzeitig starke Lernende eine Herausforderung und leistungsschwächere Schüler:innen einen interessanten Zugang zur Thematik der rationalen Zahlen.
Number Divider
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Discover the world of divisibility in a whole new way! With this intuitive app, you’ll learn the basics of division with and without remainders and discover the divisors of a number. • Visualize numbers and their divisors through arranged tiles • Experiment with different arrangements and change the divisors • Instantly recognize whether a number is divisible • Save important discoveries in your personal archive • Adjust the display to your needs • Ideal for students, teachers, parents, and math enthusiasts • Perfect for active discovery-based math lessons and learning at home This app turns understanding divisors and division into an exciting discovery process through research tasks. The clear, streamlined user interface enables you to understand mathematical relationships by directly experimenting. Here are some examples of tasks that can be tackled actively on various levels of difficulty with the app: Explore the number 8. Change the divisor. What does it mean when the divisor is displayed in red? What does it mean when it is green? Select the number 9. Find all its divisors. Then, describe how you went about the search and what you discovered. Take the number 14 and divide it sequentially by 2, 3, 4, 5. Note your discoveries. What do you notice? Examine the divisors of the number 16. Each divisor has a partner. What do you notice about these divisor pairs? Try finding divisor pairs for other numbers as well. Investigate the numbers 15, 16, 17, 18, 19, and 20 one by one. Which of these numbers are divisible by 2? Why? Formulate a hypothesis. Explore the numbers 8, 9, and 10. Find all divisors for each number and compare them. When comparing the divisors of two numbers: Is the larger number always the one with more divisors? Take the number 24. Systematically find all its divisors. Think about and explain how you can quickly find all divisors. Find numbers that only have two divisors. Explore prime numbers: Investigate the numbers from 10 to 20 for their divisors. Which numbers have exactly two divisors? Can a number have only one divisor? Justify your answer. Find numbers with particularly many divisors. What do you notice? Compare the number of divisors for the numbers 12, 24, 36. What do you notice? Can you find other numbers with a large number of divisors? Common divisors: Investigate the numbers 18 and 24. Which divisors do both numbers have in common? What is the greatest common divisor? Develop a strategy for finding the greatest common divisor of two numbers. Investigate square numbers: Examine the square numbers 1, 4, 9, 16, 25. What do you notice about the number of their divisors? Investigate numbers divisible by 3 and list them. What do you notice about the digits of these numbers? How can you tell if a number is divisible by 3 without calculating? Pick a number and find all its divisors. Multiply two divisors together each time. What do you find? Explain and justify your discovery.
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Verdict
The clearest difference is price: X at Free against Number Divider's $0.99. X also leads on iOS requirement (10.0 vs 17.0). On 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
X is free to download; Number Divider costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | X | Number Divider |
|---|---|---|
| Price | Free — better | $0.99 |
| Update frequency | — | Every 10 days |
| Ads | — | No |
| In-app purchases | No | No |
| Devices | — | iPad — better |
| Requires iOS | 10.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 1.0 GB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Universitaet Leipzig | Christian Urff |
In-app purchases
X
No in-app purchases
Number Divider
No in-app purchases








