# Number Decomposition – Math — No counting – with method

> Builds number sense and arithmetic fluency without counting for young learners. (iPhone/iPad app by Lernwunder.)

- Source: https://appshunter.io/ios/app/number-decomposition-math/id6752735119 (this page in markdown: same URL + `.md`)
- Developer: [Lernwunder](https://appshunter.io/developer/1840747082)
- Category: Education
- Price: $3.99
- Age rating: 4+
- Requires: iOS 17.0 · 78 MB
- Languages: German (Germany), Arabic, American English, French (France), Hindi, Italian, Japanese, Korean, European Portuguese, Russian and 4 more
- Released: 2025-10-02
- Data updated: 2026-08-27
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/number-decomposition-math/id6752735119/reviews.md

## What is Number Decomposition?

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.

## Key features

- Number bonds up to 10
- Drag and drop interface
- Visual quantity images
- Spaced repetition learning
- Child-friendly avatars
- Offline functionality

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/number-decomposition-math/id6752735119/reviews.md

### 5/5 — Hervorragend!

*2025-10-16*

Hervorragende Lern-App!
Eine großartige und motivierende App, die Kindern spielerisch das Grundverständnis von Zahlen und Mengen vermittelt. Durch anschauliche Bilder wird die Zahlzerlegung gefördert und so das Verständnis für Addition und Subtraktion angebahnt – ganz ohne zählendes Rechnen! Die App macht den Kindern viel Spaß und ist ideal zur Prävention von Rechenschwierigkeiten. Perfekt zum Üben zu Hause, in der Schule, in Förderstunden oder unterwegs – einfach wunderbar für nachhaltiges mathematisches Grundwissen!

## Frequently asked questions about Number Decomposition

### What is the main learning method of Number Decomposition?

Number Decomposition focuses on automating number bonds up to 10 through visual aids and spaced repetition, aiming for quick recall without counting. This pedagogical approach is designed to build a deeper understanding of arithmetic.

### How does Number Decomposition help children learn math?

It helps children learn how numbers are structured, enabling them to solve addition and subtraction tasks from memory. The app uses intuitive operation with number tiles and structured quantity images to strengthen number sense.

### Is Number Decomposition suitable for children who cannot read yet?

Yes, the app is designed for children even without reading skills, featuring intuitive operation with number tiles and structured quantity images. Child-friendly animal avatars also add to the engaging experience.

### What is the pricing for Number Decomposition?

Number Decomposition is available for a one-time purchase of $3.99, offering permanent use of the app. There are no in-app purchases or subscriptions required.

### Does Number Decomposition have ads?

No, Number Decomposition is completely ad-free. It is designed to provide a focused learning environment without any advertisements.

### Can Number Decomposition be used offline?

Yes, Number Decomposition works offline, making it ideal for on-the-go learning. This feature ensures uninterrupted access to educational content regardless of internet connectivity.

### How does Number Decomposition track learning progress?

Learning progress is made visible and motivating through the coloring of child-friendly avatars with each correct task. The Leitner learning system with spaced repetition also helps in tracking and reinforcing learned material.

### What devices is Number Decomposition available on?

Number Decomposition is available on iPhones and iPads. The app is designed to run on these Apple devices.

## Version history (last 3 releases)

### 1.3 — 2026-08-06

This version fixes issues in the learning system and makes progress more visible.

LEARNING SYSTEM
• A correct but slow answer used to count as a mistake and reset the task's progress. Now the task simply stays at its current level.
• Towards the end, the last two tasks could alternate endlessly without moving on. This is fixed.
• Now included: the doubles 2+2, 3+3 and 4+4. Existing progress is preserved.

THE DECOMPOSITION IS NOW SHOWN
• After a mistake, the quantity visibly splits into its two parts. Children see not only what is correct, but how the number is made up.
• Occasionally the decompositions of one number come one after another, making the pattern noticeable.

PROGRESS FOR PARENTS AND TEACHERS
• Tapping the animal in the settings shows every decomposition with its learning level, so you can see which single task is still shaky.
• The tangram animal now gains colour step by step instead of staying grey until a number is fully mastered.
• New progress ring for each animal.
• A short introduction for parents and teachers on first launch, available again at any time from the settings.

EASIER TO READ
• Noticeably clearer colours, especially in the pink colour scheme.
• The star visibly moves up to the next learning level.
• The app now speaks 14 languages.

Progress is saved after every answer.

### 1.2 — 2025-10-06

Small improvements and optimizations for an even better learning experience.

### 1.1 — 2025-10-02

No release notes.

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All apps by Lernwunder: https://appshunter.io/developer/1840747082

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-27.*