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Calculix

a small market ($5K/yr) — Calculix doesn't clear our bar today.

Flapen Score

35
Skip it

Ranks 1,651 of 2,084 Spielzeug niches · −8 vs the category median of 43

Market size 1Growth 16Conversion 12Competition 33Returns 82Price range 88Avg price 95Brand share 35Review moat 44Quality gap 28
This niche Category average · 2,084 niches

Is Calculix profitable on Amazon?

According to Flapen's Amazon Germany niche tracking, Calculix is a €5K/yr Amazon Germany market (21K searches/yr). The top 5 brands hold 84% of demand. Demand peaks in Sep–Oct. Verdict: Skip it — 35/100.

Calculix: the Amazon niche in one read

Everything a seller checks before entering, in three answers.

Is the demand real?

Not really. Search demand moved -18.8% over the last 90 days and 0.9% of searches end in a purchase.

€5K

revenue / yr

Units sold / yr500
Search volume / yr-18.8%21K
Conversion rate0.9%
Avg price€27.64

Who owns the niche?

The top 5 brands hold 84% of demand, so 16% of the market is open.

16%

open market share

Brands · sellers11 · 44
Top-5 product click share65%
Open market16%
Avg brand age42 months

Is there a way in?

Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.6★ — the gap to enter on.

0/100

page quality · 19 products

Sponsored placement100%
New entrants (1y)1· 0 succeeded
Avg rating4.6★
Avg reviews2,143

Top Calculix products & what they sell for

Every tracked product — its share of the shelf, its review moat, and what it sells for.

Competition: brands, sellers & click share

The top 5 products take 65% of clicks — established leaders, but buyers still shop beyond them.

€0€550€1K€2K€2K1101001K10K100K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

11 rising

Sellers

44

Top-5 brand share

84%

Top 20: 100%

Top-5 click share

65%

Top 20: 100%

Open market

12%

  • SumBlox53%
  • WISSNER10%
  • Lasoba8%
  • SCBOY7%
  • PKKP5%
  • XUDUOO5%
  • Open — no brand owns it (5 brands, 12%)

Calculix demand & seasonality

Weekly search volume, with the niche's key stats alongside.

Volume21KCVR0.9%Products19Brands11Top 5 Brands84%OOS Rate9.5%Rating4.6★Reviews2,143Avg BSR#3,355
2K1KSpike '24Holiday '24Spike '25Prime Day '25Black Friday '25Holiday '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Sep, Oct · busiest ÷ quietest = 3.3×

Top Calculix search terms shoppers use

The exact queries shoppers type, with yearly volume, growth and conversion.

  • intuitibrix8K/yr
  • sumblox5K/yr
  • zahlenbausteine4K/yr
  • calculix zahlenbausteine2K/yr
  • calculix2K/yr

What reviews say buyers love and hate about Calculix

What buyers mention most, as a share of all reviews.

What buyers love

89% of reviews
Qualität insgesamt40%

Super Qualität

Spaß/Unterhaltungserlebnis19%

Gutes Spiel

Feinmotorik6%

Dadurch wird nicht nur das Rechnen geübt, sondern auch Konzentration und Feinmotorik

Entwicklungsbedürfnisse5%

Sehr gut fürxdie Schulkinder

Benutzerfreundlichkeit5%

Lassen sich leicht handhaben

What buyers complain about

65% of reviews
beworben Vs Tatsächliches Produkt20%

Dieses Produkt ist fachlich falsch

Qualität insgesamt10%

Qualität verbesserungswürdig

Haltbarkeit10%

ebenso wird es deutlich weniger lange gebraucht als die Haltbarkeit des Artikel hergibt

Farbe10%

Manchmal sind sich die Farben sehr ähnlich

Haftung/Klebrigkeit10%

Späne zusammen geklebt

Calculix return rate & reasons

Why buyers send it back, as a share of all return requests.

1.7%

Return rate

0%

Fixable by listing

The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.

1Geruch
23%
2Gesamtgröße
20%
3Defekt Material/Teile
14%
4Materialqualität
12%
5Qualität insgesamt
7%

Common Calculix questions

The questions sellers ask about this niche, answered from the tracked metrics.

Flapen scores Calculix 35/100 on Amazon Germany — Skip it. The niche generates €5K/yr across 19 tracked products. 0 of 1 products launched in the last 360 days are still selling. Search demand moved -18.8% over the last 90 days.
Search demand for Calculix on Amazon Germany peaks in Sep–Oct, where the busiest month runs 3.3× the quietest.