Malrechnen vs Number Decomposition
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Malrechnen
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Das Malrechenfeld ist ein virtuelles Arbeitsmittel zur Veranschaulichung von Multiplikation und Division im Zahlenraum bis 100. Es ist bewusst kein Übungsprogramm, sondern eine Experimentierumgebung, in der Kinder die Grundoperationen erkunden, darstellen und verstehen können. Mit der App lassen sich: • Multiplikations- und Divisionsaufgaben legen, • Darstellungen im Malfeld, an der Zahlenlinie und als Division direkt miteinander verknüpfen, • Zusammenhänge zwischen Aufgaben und Darstellungen entdecken und Rechenstrategien erkunden. Die App eignet sich besonders für: • Kinder mit Rechenschwierigkeiten (Rechenschwäche, Dyskalkulie), • die individuelle Förderung im Unterricht oder zu Hause, • das Aufbauen tragfähiger Vorstellungen als Grundlage für weiterführende Inhalte (z. B. Rechenstrategien, schriftliche Verfahren). Wichtig: Die App enthält keine vorgegebenen Übungsaufgaben. Lernanregende Aufgabenstellungen sollten von Lehrkräften oder Eltern gestellt werden. Weitere Anregungen, Aufgabenideen und Einsatzhinweise finden Sie unter: www.urff.app
Number Decomposition
This educational app teaches children foundational math skills by focusing on number bonds up to 10, avoiding counting to build a strong understanding of arithmetic. It uses visual aids and a structured approach for quick, accurate recall of addition and subtraction facts.
- Number bonds up to 10
- Drag and drop interface
- Visual quantity images
- Spaced repetition learning
- Child-friendly avatars
- Offline functionality
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LEARN MATH – WITHOUT COUNTING Many children learn arithmetic by counting. That is tedious and often the start of later difficulties with math. This app begins exactly where true understanding develops after quantity–number correspondence: with the automation of number bonds up to 10. Children learn how numbers are structured and can solve addition and subtraction tasks safely, quickly, and from memory. No counting, no frustration, with visible success. HOW IT WORKS • Example: 8 = ? and 3 • One part is given, the other is added via drag & drop • Correct? → reward and progress • Wrong? → gentle feedback and repeat • Only fast, correct answers (under 5 seconds) count as “known by heart” MADE FOR CHILDREN – EVEN WITHOUT READING • Intuitive operation with number tiles and structured quantity images (dice, fingers, dots, and more) • Four child-friendly animal avatars: panda, dolphin, cat, dog • Each correct task colors the avatar more • Learning progress is always visible and motivating FOCUSED LEARNING INSTEAD OF A GAME APP • Reduced sounds and calm, clear visuals • No distracting effects, no flashy colors • Clear didactic structure: not a game, but a real teaching and learning app PEDAGOGICALLY SOUND – RESEARCH-BASED • Leitner learning system with spaced repetition (boxes 1–4) • Didactic reduction: only meaningful decompositions, no swapped pairs, no zero • Structured quantity images strengthen number sense and understanding • Error-oriented learning: incorrect tasks are deliberately repeated • Progress per avatar is transparent – also for parents and teachers SAFE AND AD-FREE • No ads • No in-app purchases • Works offline – ideal for on the go • One-time purchase, permanent use DOWNLOAD NOW – MAKE MATH SIMPLE With this app, your child becomes a master of number bonds: playful, visually structured, and sustainable. Ideal for preschool, first grade, or home practice – without distractions and with full focus on what matters.
Screenshots
Verdict
The clearest difference is price: Malrechnen at $0.99 against Number Decomposition's $3.99. On update cadence, ads, in-app purchases 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
Malrechnen costs $0.99 and Number Decomposition $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Malrechnen ships an update every 6 months, Number Decomposition every 5 months. The most recent releases landed on September 21, 2026 and September 15, 2026 respectively.
| Parameter | Malrechnen | Number Decomposition |
|---|---|---|
| Price | $0.99 — better | $3.99 |
| Positive reviews | — | 100.0% of reviews |
| Update frequency | Every 6 months | Every 5 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 78 MB |
| Age rating | 4+ | 4+ |
| Developer | Christian Urff | Lernwunder |
In-app purchases
Malrechnen
No in-app purchases
Number Decomposition
No in-app purchases
Questions
Is Malrechnen free?
Is Number Decomposition free?
Do Malrechnen or Number Decomposition have ads?
Which is updated more often, Malrechnen or Number Decomposition?
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