door chain lock
Skip itPricing outside the sweet spot ($9.54 avg) — this niche doesn't clear our bar today.
Conversion
Great8.1%search→purchase rate — share of searches ending in a sale
Brand share
Good68%top-5 brand share — brands hold most of the demand
Market size
Good$339K$339K/yr · 438K searches
Competition
Good54%top-5 click share — leaders hold, buyers still browse
Review moat
Okay1,973.35avg incumbent reviews — the moat a new listing must climb
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Price range
Okay$4.23–$20.79cheapest to priciest tracked listing — scored on the share inside $15–$100
Growth
Okay+6.6%90-day search growth — must beat 0% to launch
Returns
Okay4.4%return rate — above 5% kills the launch gate
Avg price
Okay$9.54avg listing price — sweet spot $15–$100
According to Flapen's Amazon United States niche tracking, door chain lock is a $339K/yr Amazon United States market (438K searches/yr). The top 5 brands hold 68% of demand. Verdict: Skip it — 47/100.
Data updated Jul 27, 2026 · scored weekly · How we score niches
door chain lock market data
- Units sold / yr
- 30K–40K
- avg 1,500–2,000/product
- Revenue / yr
- $286K–$382K
- units × avg price
- Conversion rate
- 8.1%
- Avg BSR
- #59
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 85%
- Out of stock
- 0.0%
- Avg brand age
- 46 months
- Avg seller age
- 172 days
Competition & brand share
The top 5 products take 54% of clicks — established leaders, but buyers still shop beyond them.Brands
12 falling
Sellers
31
Top-5 brand share
68%
Top 20: 100%
Top-5 click share
54%
Top 20: 100%
Open market
25%
- fitoon31%
- PRIME-LINE12%
- INBOF9%
- EverPlus9%
- Alise8%
- KRYVLEXA7%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +6.6% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.4×
Top door chain lock search terms
- door chain lock120K/yr
- chain lock for door68K/yr
- door chain56K/yr
- chain door lock31K/yr
- door chain lock heavy duty29K/yr
- door lock chain22K/yr
- chain locks for inside door46K/yr
- chain for door8K/yr
- front door chain lock8K/yr
- chain latch5K/yr
Top door chain lock 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.
All 20 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Fitoon 2 Pack Door Chain Lock Black Security Door Chain for Inside Door Premium Thickened Chain Door Lock with 12 Screws
fitoon$6.084.5★1,085 rev
INBOF 2 Pack Door Chain Lock Stainless Steel Chain Locks for Inside Door Premium Thickened with 12 Screws
INBOF$5.694.6★2,745 rev
Home Security Door Reinforcement Lock - Child Proof High Security Door Lock Front Door Locks for Kids Safety Withstand 800 lbs Top Door Latch Lock Flip Door Guardian for Inward Swinging Inside Door
EverPlus$10.104.7★1,839 rev
Door Reinforcement Lock Withstands 800lbs of Force - White Extra Proof Door Lock for Kids Safety Drilling Required Prevents Unauthorized Entry Add a Door Security Lock for Home Safety & Privacy
AceMining$11.304.8★5,352 rev
JQK Door Chain Lock Black Stainless Steel Door Guard with Spring Anti-Theft Press Lock Matte Black HDC100-PB
JQK$7.914.5★1,271 rev
Newest
by launch date
Alise Door Chain Lock Matte Black Adjustable Child Proof Security Door Lock for Apartment
Alise$7.9241 rev
Fitoon 2 Pack Door Chain Lock Stainless Steel Security Door Chain for Inside Door Premium Thickened Chain Door Lock with 12 Screws
fitoon$4.44184 rev
Heavy Duty 304 Stainless Steel Door Chain Lock Spring-Loaded Anti-Tamper Security Latch & Door Restrictor Child Safety Lock for Front & Back Doors Home Apartment & Hotel Black
KRYVLEXA$9.8836 rev
Heavy Duty 304 Stainless Steel Door Chain Lock Spring-Loaded Anti-Tamper Security Latch & Door Restrictor Child Safety Lock for Front & Back Doors Home Apartment & Hotel Silver
KRYVLEXA$9.7236 rev
Fitoon 2 Pack Door Chain Lock Black Security Door Chain for Inside Door Premium Thickened Chain Door Lock with 12 Screws
fitoon$6.081,085 rev
Trending
90-day click momentumHeavy Duty 304 Stainless Steel Door Chain Lock Spring-Loaded Anti-Tamper Security Latch & Door Restrictor Child Safety Lock for Front & Back Doors Home Apartment & Hotel Black
KRYVLEXA$9.884.1★
Alise Door Chain Lock Matte Black Adjustable Child Proof Security Door Lock for Apartment
Alise$7.924.4★
Prime-Line MP10304 Chain Door Lock 3-5/16 In. Extruded Brass Satin Nickel-Plated 6 In. Chain (Single Pack)
PRIME-LINE$4.234.7★
Heavy Duty 304 Stainless Steel Door Chain Lock Spring-Loaded Anti-Tamper Security Latch & Door Restrictor Child Safety Lock for Front & Back Doors Home Apartment & Hotel Silver
KRYVLEXA$9.724.1★
Defender Security U 10305 Prime Line Standard Chain Door Guard Solid Classic Bronze
PRIME-LINE$10.964.6★
What buyers say about door chain lock
What buyers praise and complain about, mined from review topics.What buyers love
“Easy to setup”
“Door lock”
“Solid security”
“Excellent product”
“Sturdy and Easy to Install”
“reasonably priced”
“works as advertised”
“Easy to use”
“Works/Effective”
“Durable and easy to use”
What buyers complain about
“It broke after three days”
“Small”
“The mechanism is failing”
“Flimsy”
“Little finicky to install”
“Cheap, unattractive & doesnt work”
“However, the instructions could be better”
“Not compatible”
“its an additional cost to others”
“Nice concept not effective”
Top return reasons
Common questions
- Is door chain lock profitable to sell on Amazon United States?
- The niche generates $339K/yr across 20 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is +6.6%. Flapen's verdict: Skip it (47/100).
- How competitive is the door chain lock niche?
- 12 brands and 31 sellers compete. The top 5 products take 54% of clicks and top 5 brands hold 68% of demand.
- What do buyers complain about in door chain lock?
- Top complaints mined from reviews: Durability, Size-Overall, Locking Mechanism. The return rate is 4.4%.
- When does demand for door chain lock peak?
- Demand is steady year-round — the busiest month runs 1.4× the quietest.
- What does it cost to enter the door chain lock niche?
- Listings span $4.23–$20.79; the average listing price is $9.54 (sweet spot $15–$100). The average incumbent carries 1,973 reviews — the moat a new listing must climb.