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Mass Gainer

prices mostly outside the sweet spot ($119.02–$272.02) — Mass Gainer doesn't clear our bar today.

Flapen Score

37
Skip it

Ranks 164 of 184 Health niches · −11 vs the category median of 48

Market size 18Growth 33Conversion 9Competition 24Returns 99Price range 0Avg price 49Brand share 16Review moat 34Quality gap 88
This niche Category average · 184 niches

Is Mass Gainer profitable on Amazon?

According to Flapen's Amazon Saudi Arabia niche tracking, Mass Gainer is a $70K/yr Amazon Saudi Arabia market (54K searches/yr). The top 5 brands hold 93% of demand. Verdict: Skip it — 37/100.

Mass Gainer: the Amazon niche in one read

Everything a seller checks before entering, in three answers.

Is the demand real?

Not really. Search demand moved +6.7% over the last 90 days and 0.7% of searches end in a purchase.

$70K

revenue / yr

Units sold / yr500
Search volume / yr+6.7%54K
Conversion rate0.7%
Avg price$180.88

Who owns the niche?

The top 5 brands hold 93% of demand, so 7% of the market is open.

7%

open market share

Brands · sellers7 · 11
Top-5 product click share71%
Open market7%
Avg brand age63 months

Is there a way in?

Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.1★ — the gap to enter on.

0/100

page quality · 15 products

Sponsored placement0%
New entrants (1y)1· 0 succeeded
Avg rating4.1★
Avg reviews3,142

Top Mass Gainer 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 capture 71% of clicks — a locked-up shelf that new listings rarely crack.

$0$7K$14K$21K$28K1101001K10K100K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

7 rising

Sellers

11

Top-5 brand share

93%

Top 20: 100%

Top-5 click share

71%

Top 20: 100%

Open market

2%

  • Optimum Nutrition59%
  • Body Builder11%
  • Muscletech11%
  • Dymatize8%
  • Applied Nutrition4%
  • Basix4%
  • Open — no brand owns it (1 brand, 2%)

Mass Gainer demand & seasonality

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

Volume54KCVR0.7%Products15Brands7Top 5 Brands93%OOS Rate8.6%Rating4.1★Reviews3,142Avg BSR#40
1K750Spike '26Prime Day '26Feb '26Mar '26Mar '26Apr '26May '26Jun '26

Top Mass Gainer search terms shoppers use

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

  • mass gainer37K/yr
  • ماس جينر7K/yr
  • بروتين ماس5K/yr
  • mass gainer protein powder4K/yr

What reviews say buyers love and hate about Mass Gainer

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

What buyers love

100% of reviews
الجودة الشاملة100%

Good quality

What buyers complain about

100% of reviews
منظم الحموضة/تخفيف آلام المعدة100%

Very bad not worth it i don't know why I'm buy this product when I drink this protein after I'm didn't eat anything because stomach sick

Common Mass Gainer questions

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

Flapen scores Mass Gainer 37/100 on Amazon Saudi Arabia — Skip it. The niche generates $70K/yr across 15 tracked products. 0 of 1 products launched in the last 360 days are still selling. Search demand moved +6.7% over the last 90 days.
Mass Gainer buyers on Amazon Saudi Arabia complain most about منظم الحموضة/تخفيف آلام المعدة, the themes mined from the niche's reviews. Its return rate is 0.2%.

Best Flapen score

The highest-scoring niches we track right now, across every category.