Comparison

BUDENBERG DaZ vs Number Decomposition

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

Head to head
About

BUDENBERG DaZ

Features
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If you are learning German as a second language, with this app you can learn more than 800 words and short sentences in German. You see pictures and can have the words and sentences read out to you. You collect points: Max. 5 per correct answer. The fewer mistakes you make or the fewer times you use the read-aloud function, the more points you earn. You learn words from the following categories: - At school (school supplies, rooms and places, people, timetable, lessons, learning) - People, colors, body parts (people, colors and clothes, body parts, I can..., I am...) - Every day, every night (times of day and meals, personal hygiene, in the house, everyday activities, games, the weather) - In the supermarket (fruit and vegetables, food and packaging, facilities and employees) - I go to the doctor (illness and injury, symptoms, doctor's surgery and hospital, treatments) - In the city (street, traffic, vehicles, facilities and people, stores, offers, prices, routes, descriptions of places) - Animals (pets, wild animals, domestic animals, insects, exotic animals, fish and marine animals, birds) - Numbers and hobbies (numbers, musical instruments, sports)

About

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.

Highlights
  • Number bonds up to 10
  • Drag and drop interface
  • Visual quantity images
  • Spaced repetition learning
  • Child-friendly avatars
  • Offline functionality
Features
Read full description

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 β€’ Example: 8 = ? and 3 β€’ One part is given, the other is added via drag & drop β€’ Correct? β†’ reward and progress β€’ Wrong? β†’ gentle feedback and repeat β€’ Only fast, correct answers (under 5 seconds) count as β€œknown by heart” MADE FOR CHILDREN – EVEN WITHOUT READING β€’ Intuitive operation with number tiles and structured quantity images (dice, fingers, dots, and more) β€’ Four child-friendly animal avatars: panda, dolphin, cat, dog β€’ Each correct task colors the avatar more β€’ Learning progress is always visible and motivating FOCUSED LEARNING INSTEAD OF A GAME APP β€’ Reduced sounds and calm, clear visuals β€’ No distracting effects, no flashy colors β€’ Clear didactic structure: not a game, but a real teaching and learning app PEDAGOGICALLY SOUND – RESEARCH-BASED β€’ Leitner learning system with spaced repetition (boxes 1–4) β€’ Didactic reduction: only meaningful decompositions, no swapped pairs, no zero β€’ Structured quantity images strengthen number sense and understanding β€’ Error-oriented learning: incorrect tasks are deliberately repeated β€’ Progress per avatar is transparent – also for parents and teachers SAFE AND AD-FREE β€’ No ads β€’ No in-app purchases β€’ Works offline – ideal for on the go β€’ 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

BUDENBERG DaZ4 screens
Number Decomposition4 screens

Verdict

The call

The clearest difference is update cadence: BUDENBERG DaZ at every 3 weeks against Number Decomposition's every 5 months. BUDENBERG DaZ also leads on iOS requirement (11.0 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

UpkeepUpdate frequency

BUDENBERG DaZ ships an update every 3 weeks, Number Decomposition every 5 months. The most recent releases landed on October 1, 2026 and October 12, 2026 respectively.

Scorecard2 real differences Β· 6 level
BUDENBERG DaZ versus Number Decomposition: the parameters behind the verdict, then further details
ParameterBUDENBERG DaZNumber Decomposition
Priceβ€”$3.99 β€” better
Positive reviewsβ€”100.0% of reviews
Update frequencyEvery 3 weeks β€” betterEvery 5 months
AdsNoNo
In-app purchasesNoNo
Monetizationβ€”Paid
DevicesiPhone, iPad, iPod β€” betteriPhone, iPad
Requires iOS11.0 β€” better17.0
Further details β€” not scored
Size23 MB78 MB
Age rating4+4+
DeveloperMEIK STOLLLernwunder

In-app purchases

None

BUDENBERG DaZ

No in-app purchases

None

Number Decomposition

No in-app purchases

Questions

Is BUDENBERG DaZ free?
Pricing for BUDENBERG DaZ is not currently listed on the App Store.
Is Number Decomposition free?
Number Decomposition costs $3.99, with no in-app purchases.
Do BUDENBERG DaZ or Number Decomposition have ads?
Neither BUDENBERG DaZ nor Number Decomposition shows ads.
Which is updated more often, BUDENBERG DaZ or Number Decomposition?
BUDENBERG DaZ ships an update every 3 weeks, and Number Decomposition every 5 months. Most recently, BUDENBERG DaZ was updated on October 1, 2026 and Number Decomposition on October 12, 2026.

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