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galaxy a21 screen protector

Skip it26/100

a small market ($12K/yr) — galaxy a21 screen protector doesn't clear our bar today.

Market/yr

$12K

Growth (1y)

+3.8%

Products

10

Brands

9

was 11 a year ago

Sellers

10

Price range

$5.12–$10.20

Returns

2.4%

Rating

4.4★

26/100

Skip it

Scored 26/100 across market size, growth, competition, quality gap, and returns.

Market sizeGrowthCompetitionQuality gapReturns
Market size
1
×0.30
Growth
36
×0.30
Competition
9
×0.20
Quality gap
47
×0.10
Returns
81
×0.10

Demand

Weekly Amazon search volume, last 101 weeks — +3.8% year over year.
405202.5Spike '25Spike '26Jul '24Nov '24Mar '25Jun '25Oct '25Feb '26

Seasonality

Monthly demand index across the year — 1.00 is average.

Peak months: Jul, Aug · busiest ÷ quietest = 2.2×

Competition

35%Supershieldz
  • Supershieldz35%
  • JxVrennzik15%
  • HPTech15%
  • beukei11%
  • VIESUP10%
  • LYWHL5%
  • Other (3 brands)9%

The top 5 products capture 84% of clicks — a locked-up shelf that new listings rarely crack. 9 brands and 10 sellers compete here.

Brands

9 falling

was 11 a year ago

Sellers

10

Top 5 brand share

86%

#ProductBrandPriceRatingReviewsClick shareTrend

Product shelf

All 10 tracked products in this niche.

Reviews

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

What buyers love

Quality-Overall19%

“Very good product”

Size-Overall15%

“Perfect fit”

Drop/Impact Protection14%

“Prevents scratch's”

Ease Of Use14%

“ease of use”

Compatibility-Overall14%

“It stated compatible”

Value For Money8%

“the price was right”

Durability7%

“durable”

Assembly/Installation4%

“Easy to install”

Advertised Vs Actual Product4%

“Just as described”

What buyers complain about

Quality-Overall50%

“Junk”

Size-Overall25%

“Fitting Issue”

Compatibility-Overall25%

“It did not fit my Galaxy Flip 7”

Top return reasons

  • Size-Overall75%
  • Compatibility-Overall13%
  • Adhesion/Stickiness4%
  • Advertised Vs Actual Product3%
  • Drop/Impact Protection2%
  • Functionality-Overall2%
  • Length2%
  • Strength1%
  • Touch Screen1%

Data scraped July 6, 2026 · Marketplace baseline: 4.4★ avg rating · $22.65 median price · 2.2% median returns across 14,117 tracked niches.