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calculix

Skip it

A small market ($5K/yr) — this niche doesn't clear our bar today.

Market size 1Growth 16Conversion 12Competition 33Returns 82Price range 88Avg price 95Brand share 35Review moat 44Quality gap 28

Avg price

Incredible€27.64

avg listing price — sweet spot $15–$100

Price range

Great€7.30–€95.45

cheapest to priciest tracked listing — scored on the share inside $15–$100

Returns

Great1.7%

return rate — above 5% kills the launch gate

Review moat

Okay2,142.68

avg incumbent reviews — the moat a new listing must climb

Brand share

Okay84%

top-5 brand share — brands hold most of the demand

Competition

Okay65%

top-5 click share — leaders hold, buyers still browse

Quality gap

Okay4.6★

avg incumbent rating — lower means beatable quality

Growth

Bad-18.8%

90-day search growth — must beat 0% to launch

Conversion

Bad0.9%

search→purchase rate — share of searches ending in a sale

Market size

Bad€5K

€5K/yr · 21K searches

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.

Data updated Jul 16, 2026 · scored weekly · How we score niches

calculix market data

Units sold / yr
250–500
avg 0–100/product
Revenue / yr
€7K–€14K
units × avg price
Conversion rate
0.9%
Avg BSR
#3,355
Page quality
0%
Prime
100%
Sponsored
100%
Out of stock
9.5%
Avg brand age
42 months
Avg seller age
191 days

Competition & brand share

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

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%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -18.8% search growth over the last 90 days.
2K1KSpike '24Holiday '24Spike '25Prime Day '25Black Friday '25Holiday '25Spike '26SepDecMarJunAugNovMarMay

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

Top calculix search terms

  • intuitibrix8K/yr
  • sumblox5K/yr
  • zahlenbausteine4K/yr
  • calculix zahlenbausteine2K/yr
  • calculix2K/yr
All search terms

Top calculix products on Amazon

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

0%10%€55020%€1K30%€2K40%€2K1101001K10K100K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 19 tracked products in this niche — three views at once, no toggling.

What buyers say about calculix

What buyers praise and complain about, mined from review topics.

What buyers love

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”

Materialqualität5%

“Super Material”

Farbe3%

“die Farben sind sehr schön”

Montage/Installation2%

“Ansonsten macht es ihr auch einfach Spaß, damit zu bauen”

Speicherkapazität2%

“Die Aufbewahrungsbox aus Buche ist praktisch”

Lese-/Schreibfähigkeiten2%

“Sie helfen meiner Tochter in der ersten Klasse sehr, sich Zahlen besser zu eigen zu machen”

What buyers complain about

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”

Pädagogisch-insgesamt5%

“Das Lernen fühlt sich dadurch nicht wie „Unterricht“,”

Top return reasons

Geruch23%
Gesamtgröße20%
Defekt Material/Teile14%
Materialqualität12%
Qualität insgesamt7%
beworben Vs Tatsächliches Produkt5%
Funktionalität insgesamt3%
Design insgesamt3%
Pädagogisch-insgesamt3%
Gewicht schwer2%

Common questions

Is calculix profitable to sell on Amazon Germany?
The niche generates €5K/yr across 19 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is -18.8%. Flapen's verdict: Skip it (35/100).
How competitive is the calculix niche?
11 brands and 44 sellers compete. The top 5 products take 65% of clicks and top 5 brands hold 84% of demand.
What do buyers complain about in calculix?
Top complaints mined from reviews: beworben Vs Tatsächliches Produkt, Qualität insgesamt, Haltbarkeit. The return rate is 1.7%.
When does demand for calculix peak?
Demand peaks in Sep–Oct; the busiest month runs 3.3× the quietest.
What does it cost to enter the calculix niche?
Listings span €7.30–€95.45; the average listing price is €27.64 (sweet spot $15–$100). The average incumbent carries 2,143 reviews — the moat a new listing must climb.