--- title: "S21 Ultra Privacy Screen Protector — $42K/yr Amazon US Niche (2026) - Flapen" canonical_url: "https://flapen.com/research/us/cell-phones-accessories/s21-ultra-privacy-screen-protector" last_updated: "2026-08-09T17:32:05.225Z" locale: en meta: description: "Niche score 51/100 · $42K/yr market · 34K searches/yr · $12.72 avg price. A small market ($42K/yr) keeps it on the watch list. Data updated Jul 2026." "og:description": "Niche score 51/100 · $42K/yr market · 34K searches/yr · $12.72 avg price. A small market ($42K/yr) keeps it on the watch list. Data updated Jul 2026." "og:title": "S21 Ultra Privacy Screen Protector — $42K/yr Amazon US Niche (2026) - Flapen" --- # **s21 ultra privacy screen protector** **Worth a look** Shows beatable incumbent ratings (3.7★), but a small market ($42K/yr) keeps it on the watch list. Market size 11Growth 22Conversion 86Competition 49Returns 74Price range 36Avg price 56Brand share 56Review moat 50Quality gap 98 **Quality gap** **Incredible****3.7★** avg incumbent rating — lower means beatable quality **Conversion** **Great****9.8%** search→purchase rate — share of searches ending in a sale **Returns** **Good****2.0%** return rate — above 5% kills the launch gate **Brand share** **Good****71%** top-5 brand share — brands hold most of the demand **Avg price** **Good****$12.72** avg listing price — sweet spot $15–$100 **Review moat** **Okay****1,526.35** avg incumbent reviews — the moat a new listing must climb **Competition** **Okay****56%** top-5 click share — leaders hold, buyers still browse **Price range** **Okay****$9.30–$18.17** cheapest to priciest tracked listing — scored on the share inside $15–$100 **Growth** **Bad****-6.5%** 90-day search growth — must beat 0% to launch **Market size** **Bad****$42K** $42K/yr · 34K searches **Signals**[** Quality Gap**](https://flapen.com/research/niches?market=us&signal=quality_gap "Avg rating < 4.0") [** Out of Stock**](https://flapen.com/research/niches?market=us&signal=out_of_stock "OOS rate > 10%") According to Flapen's Amazon United States niche tracking, s21 ultra privacy screen protector is a $42K/yr Amazon United States market (34K searches/yr). The top 5 brands hold 71% of demand. Demand peaks in Jul. Verdict: Worth a look — 51/100. Data updated Jul 6, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology) ## **s21 ultra privacy screen protector market data**
**Units sold / yr**
**3K–4K**
avg 100–250/product
**Revenue / yr**
**$38K–$51K**
units × avg price
**Conversion rate**
**9.8%**
**Avg BSR**
**#3,043**
**Page quality**
**0%**
**Prime**
**96%**
**Sponsored**
**78%**
**Out of stock**
**38.9%**
**Avg brand age**
**29 months**
**Avg seller age**
**224 days**
## **Competition & brand share** The top 5 products take 56% of clicks — established leaders, but buyers still shop beyond them. **Brands** **13 **▲rising **Sellers** **21** **Top-5 brand share** **71%** Top 20: 100% **Top-5 click share** **56%** Top 20: 95% **Open market** **23%** - LYWHL31% - JavoYion16% - JEHOO10% - QUESPLE8% - YWXTW6% - Cnarery6% ## **Demand & seasonality** Weekly Amazon search volume, last 98 weeks — -6.5% search growth over the last 90 days. 1K750Spike '24Prime Day '25Black Friday '25Spike '26 seasonDecMarJunAugNovMarMay Peak months: Jul · busiest ÷ quietest = 1.6× [**Open Trend **](https://flapen.com/research/us/cell-phones-accessories/s21-ultra-privacy-screen-protector/trend) ## **Top s21 ultra privacy screen protector search terms** - **s21 ultra privacy screen protector**9K/yr-8.8%7.1% conv. - **s21 ultra screen protector privacy**6K/yr+7.0%6.6% conv. - **samsung galaxy s21 ultra privacy screen protector**6K/yr-24.8%7.9% conv. - **samsung galaxy s 21 ultra privacy screen protector**4K/yr+10.4%5.9% conv. - **galaxy s21 ultra privacy screen protector**4K/yr-0.7%6.5% conv. - **samsung galaxy s21 ultra privacy tempered glass screen protector**3K/yr-7.8%5.7% conv. - **samsung s21 ultra privacy screen protector**3K/yr-8.8%11.3% conv. [**All search terms **](https://flapen.com/research/us/cell-phones-accessories/s21-ultra-privacy-screen-protector/search-terms) ## **Top s21 ultra privacy screen protector 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%$4K20%$8K30%$13K40%$17K1101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales Beatable (≤4.3★) Contested Strong incumbent (>4.7★) All 23 tracked products in this niche — three views at once, no toggling. ### **Top sellers** by 90-day click share [1![LYWHL 2 Pack for Galaxy S21 Ultra Privacy Screen Protector Anti-Spy Full Adhesive Coverage Film for Samsung Galaxy S21 Ultra [Ultrasonic Fingerprint Compatible] Easy Installation](https://m.media-amazon.com/images/I/41xdB2NTNKL.jpg)**LYWHL 2 Pack for Galaxy S21 Ultra Privacy Screen Protector Anti-Spy Full Adhesive Coverage Film for Samsung Galaxy S21 Ultra \[Ultrasonic Fingerprint Compatible\] Easy Installation**LYWHL**$9.97**4.2★6,520 rev](https://www.amazon.com/dp/B08S3YNBTC) [2![JavoYion 2 Pack for Samsung Galaxy S21 Ultra Privacy Screen Protector Soft Film and 2 Pack Lens Protector Fingerprint Unlock Compatible 25 Anti Spy Easy Installation Bubble-Free Case Friendly](https://m.media-amazon.com/images/I/413BAUcJcQL.jpg)**JavoYion 2 Pack for Samsung Galaxy S21 Ultra Privacy Screen Protector Soft Film and 2 Pack Lens Protector Fingerprint Unlock Compatible 25 Anti Spy Easy Installation Bubble-Free Case Friendly**JavoYion**$11.23**4.4★19,558 rev](https://www.amazon.com/dp/B0GDV1RNHW) [3![[2 Pack] YWXTW for Galaxy S21 Ultra Privacy Screen Protector Tempered Glass Anti-Spy 9H Hardness Film for Samsung Galaxy S21 Ultra 6.8 3D Curved Edge Easy Install [Dont Support Fingerprint Unlock]](https://m.media-amazon.com/images/I/41GDwWn28IL.jpg)**\[2 Pack\] YWXTW for Galaxy S21 Ultra Privacy Screen Protector Tempered Glass Anti-Spy 9H Hardness Film for Samsung Galaxy S21 Ultra 6.8 3D Curved Edge Easy Install \[Dont Support Fingerprint Unlock\]**YWXTW**$9.30**3.6★1,272 rev](https://www.amazon.com/dp/B08RYK8Y13) [4![[2 Pack] Galaxy S21 Ultra Privacy Screen Protector 2 Pack Camera Lens Protector Tempered 9H Hardness Easy Install Anti-Scratch Anti-Fingerprint Anti-Spy Screen Protector for Galaxy S21 Ultra 6.8Inch](https://m.media-amazon.com/images/I/41BpeXiFUIL.jpg)**\[2 Pack\] Galaxy S21 Ultra Privacy Screen Protector 2 Pack Camera Lens Protector Tempered 9H Hardness Easy Install Anti-Scratch Anti-Fingerprint Anti-Spy Screen Protector for Galaxy S21 Ultra 6.8Inch**AYCFING**$12.37**3.2★8 rev](https://www.amazon.com/dp/B0GWLHP8CS) [5![QUESPLE 2 Pack for Samsung Galaxy S21 Ultra Anti-Glare Matte Privacy Screen Protector 6.8 inch Smooth and Responsive Touch Flexible EPU Film [Support Fingerprint Unlock] [Self-Healing] [Not Glass]](https://m.media-amazon.com/images/I/41ecpI3PHML.jpg)**QUESPLE 2 Pack for Samsung Galaxy S21 Ultra Anti-Glare Matte Privacy Screen Protector 6.8 inch Smooth and Responsive Touch Flexible EPU Film \[Support Fingerprint Unlock\] \[Self-Healing\] \[Not Glass\]**QUESPLE**$10.11**3.6★6 rev](https://www.amazon.com/dp/B0FHK3HLMN) **~~View all top sellers →~~** ### **Newest** by launch date [![Cnarery 2 Pack for Samsung Galaxy S21 Ultra Matte Privacy Screen Protector 6.8 Inch[Not Glass] Anti-Scratch Anti-Glare Support fingerprint Unlock](https://m.media-amazon.com/images/I/4135OKX2OaL.jpg)**Cnarery 2 Pack for Samsung Galaxy S21 Ultra Matte Privacy Screen Protector 6.8 Inch\[Not Glass\] Anti-Scratch Anti-Glare Support fingerprint Unlock**Cnarery**$18.00**3 rev2w ago](https://www.amazon.com/dp/B0GJ5NJPJ9) [![2 Pack Galaxy S21 Ultra Privacy Screen Protecto 9H Hardness[Anti-Scratch] Anti-Spy Tempered Glass Protective Film Full Anti-Glare Anti-Scratch for Galaxy S21 Ultra(6.8 Inch)Smooth and Responsive](https://m.media-amazon.com/images/I/51mKWkzeqYL.jpg)**2 Pack Galaxy S21 Ultra Privacy Screen Protecto 9H Hardness\[Anti-Scratch\] Anti-Spy Tempered Glass Protective Film Full Anti-Glare Anti-Scratch for Galaxy S21 Ultra(6.8 Inch)Smooth and Responsive**Xenovont**$13.16**288 rev1mo ago](https://www.amazon.com/dp/B0GZZ4C83Y) [![[2 Pack] Galaxy S21 Ultra Privacy Screen Protector 9H Tempered Glass Ultrasonic Fingerprint Support 3D Curved Anti-Spy Film Anti-Fingerprint for Galaxy S21 Ultra 5G Screen Protector (6.8 Inch)](https://m.media-amazon.com/images/I/415EoJedpkL.jpg)**\[2 Pack\] Galaxy S21 Ultra Privacy Screen Protector 9H Tempered Glass Ultrasonic Fingerprint Support 3D Curved Anti-Spy Film Anti-Fingerprint for Galaxy S21 Ultra 5G Screen Protector (6.8 Inch)**Xenovont**$11.23**7 rev2mo ago](https://www.amazon.com/dp/B0GY4B1KSL) [![[2+2 Pack] Galaxy S21 Ultra Privacy Screen Protector Camera Lens Protectos 9H Tempered Glass Ultrasonic Fingerprint Support 3D Curved Clear Anti-Spy Film for S21 Ultra Screen Protector (6.8 Inch)](https://m.media-amazon.com/images/I/411y3A3xa+L.jpg)**\[2+2 Pack\] Galaxy S21 Ultra Privacy Screen Protector Camera Lens Protectos 9H Tempered Glass Ultrasonic Fingerprint Support 3D Curved Clear Anti-Spy Film for S21 Ultra Screen Protector (6.8 Inch)**SunColorful**$10.88**6 rev2mo ago](https://www.amazon.com/dp/B0GXDC3CNY) [![[2 Pack] Galaxy S21 Ultra Privacy Screen Protector 2 Pack Camera Lens Protector Tempered 9H Hardness Easy Install Anti-Scratch Anti-Fingerprint Anti-Spy Screen Protector for Galaxy S21 Ultra 6.8Inch](https://m.media-amazon.com/images/I/41BpeXiFUIL.jpg)**\[2 Pack\] Galaxy S21 Ultra Privacy Screen Protector 2 Pack Camera Lens Protector Tempered 9H Hardness Easy Install Anti-Scratch Anti-Fingerprint Anti-Spy Screen Protector for Galaxy S21 Ultra 6.8Inch**AYCFING**$12.37**8 rev2mo ago](https://www.amazon.com/dp/B0GWLHP8CS) **~~View all new products →~~** ### **Trending** 90-day click momentum [![Cnarery 2 Pack Privacy Screen Protector for Samsung Galaxy S21 Ultra [Not Glass] Anti-spy Flexible TPU Screen Protector Support Fingerprint unlock Full Coverage](https://m.media-amazon.com/images/I/51cKdar8oIL.jpg)**Cnarery 2 Pack Privacy Screen Protector for Samsung Galaxy S21 Ultra \[Not Glass\] Anti-spy Flexible TPU Screen Protector Support Fingerprint unlock Full Coverage**Cnarery**$9.95**4.4★**▲ 175%**](https://www.amazon.com/dp/B0GSJ3YSJT) [![[2 Pack] Galaxy S21 Ultra Privacy Screen Protector 2 Pack Camera Lens Protector Tempered 9H Hardness Easy Install Anti-Scratch Anti-Fingerprint Anti-Spy Screen Protector for Galaxy S21 Ultra 6.8Inch](https://m.media-amazon.com/images/I/41BpeXiFUIL.jpg)**\[2 Pack\] Galaxy S21 Ultra Privacy Screen Protector 2 Pack Camera Lens Protector Tempered 9H Hardness Easy Install Anti-Scratch Anti-Fingerprint Anti-Spy Screen Protector for Galaxy S21 Ultra 6.8Inch**AYCFING**$12.37**3.2★**▲ 174%**](https://www.amazon.com/dp/B0GWLHP8CS) [![[2 Pack] Galaxy S21 Ultra Privacy Screen Protector 9H Tempered Glass Ultrasonic Fingerprint Support 3D Curved Anti-Spy Film Anti-Fingerprint for Galaxy S21 Ultra 5G Screen Protector (6.8 Inch)](https://m.media-amazon.com/images/I/415EoJedpkL.jpg)**\[2 Pack\] Galaxy S21 Ultra Privacy Screen Protector 9H Tempered Glass Ultrasonic Fingerprint Support 3D Curved Anti-Spy Film Anti-Fingerprint for Galaxy S21 Ultra 5G Screen Protector (6.8 Inch)**Xenovont**$11.23**2.6★**▲ 174%**](https://www.amazon.com/dp/B0GY4B1KSL) [![2 Pack Galaxy S21 Ultra Privacy Screen Protecto 9H Hardness[Anti-Scratch] Anti-Spy Tempered Glass Protective Film Full Anti-Glare Anti-Scratch for Galaxy S21 Ultra(6.8 Inch)Smooth and Responsive](https://m.media-amazon.com/images/I/51mKWkzeqYL.jpg)**2 Pack Galaxy S21 Ultra Privacy Screen Protecto 9H Hardness\[Anti-Scratch\] Anti-Spy Tempered Glass Protective Film Full Anti-Glare Anti-Scratch for Galaxy S21 Ultra(6.8 Inch)Smooth and Responsive**Xenovont**$13.16**4.1★**▲ 173%**](https://www.amazon.com/dp/B0GZZ4C83Y) [![[2 Pack] JEHOO for Samsung Galaxy S21 Ultra 5G Privacy Screen Protector 6.8-Inch 9H Tempered Glass Film Bubble Free Case Friendly Scratch Resistant Easy InstallationDoesnt Support Fingerprint Sensor](https://m.media-amazon.com/images/I/415MZ0Y7DnL.jpg)**\[2 Pack\] JEHOO for Samsung Galaxy S21 Ultra 5G Privacy Screen Protector 6.8-Inch 9H Tempered Glass Film Bubble Free Case Friendly Scratch Resistant Easy InstallationDoesnt Support Fingerprint Sensor**JEHOO**$10.18**4.3★**▲ 173%**](https://www.amazon.com/dp/B0GVGXK311) **~~View all trending →~~** ## **What buyers say about s21 ultra privacy screen protector** What buyers praise and complain about, mined from review topics. ### **What buyers love ** **Drop/Impact Protection**13% *“Protector”* **Assembly/Installation**12% *“Easily Installed”* **Size-Overall**11% *“Fits perfectly”* **Security**11% *“Gives the privacy”* **Advertised Vs Actual Product**10% *“As shown”* **Quality-Overall**9% *“Good quality”* **Durability**7% *“It is durable”* **Ease Of Use**4% *“so easy”* **Value For Money**4% *“Good for the price”* **Display Brightness**2% *“Once I turned up the brightness on my display I could see the screen well enough”* ### **What buyers complain about ** **Quality-Overall**9% *“Totally worthless garbage I don't recommend”* **Touch/Button Controls**8% *“defeats the point of having a touchscreen”* **Ease Of Use**8% *“It was hard to put on”* **Assembly/Installation**8% *“Installation is complicated”* **Value For Money**7% *“just a waste of my money”* **Instructions/User Manual/Troubleshooting**6% *“Bubbles using the instructions were not good”* **Compatibility-Overall**4% *“Did not work with my samsung s21”* **Security**4% *“the privacy screen kind of sucks”* **Durability**4% *“broke the other”* **Functionality-Overall**3% *“Does not work as expected”* ### **Top return reasons ** **Size-Overall**21% **Functionality-Overall**19% **Adhesion/Stickiness**12% **Compatibility-Overall**11% **Touch Screen**4% **Defective Material/Parts**3% **Display-Overall**3% **Advertised Vs Actual Product**3% **Instructions/User Manual/Troubleshooting**3% **Value For Money**2% ## **Common questions**
**Is s21 ultra privacy screen protector profitable to sell on Amazon United States?**
The niche generates $42K/yr across 23 tracked products. 0 of 14 products launched in the last 360 days are still selling. 90-day search growth is -6.5%. Flapen's verdict: Worth a look (51/100).
**How competitive is the s21 ultra privacy screen protector niche?**
13 brands and 21 sellers compete. The top 5 products take 56% of clicks and top 5 brands hold 71% of demand.
**What do buyers complain about in s21 ultra privacy screen protector?**
Top complaints mined from reviews: Quality-Overall, Touch/Button Controls, Ease Of Use. The return rate is 2.0%.
**When does demand for s21 ultra privacy screen protector peak?**
Demand peaks in Jul; the busiest month runs 1.6× the quietest.
**What does it cost to enter the s21 ultra privacy screen protector niche?**
Listings span $9.30–$18.17; the average listing price is $12.72 (sweet spot $15–$100). The average incumbent carries 1,526 reviews — the moat a new listing must climb.
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