bullet journal ruler
Skip itSoft demand (-56.8% this quarter) — this niche doesn't clear our bar today.
Review moat
Great125.33avg incumbent reviews — the moat a new listing must climb
Competition
Great37%top-5 click share — an open shelf
Returns
Good2.6%return rate — above 5% kills the launch gate
Conversion
Okay4.0%search→purchase rate — share of searches ending in a sale
Avg price
Okay$11.41avg listing price — sweet spot $15–$100
Market size
Okay$197K$197K/yr · 437K searches
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Price range
Bad$6.61–$16.38cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Bad95%top-5 brand share — brand-locked demand
Growth
Bad-56.8%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, bullet journal ruler is a $197K/yr Amazon United States market (437K searches/yr). The top 5 brands hold 95% of demand. Demand peaks in Jan–Sep–Oct–Nov–Dec. Verdict: Skip it — 40/100.
Data updated Jul 9, 2026 · scored weekly · How we score niches
bullet journal ruler market data
- Units sold / yr
- 13K–15K
- avg 100–250/product
- Revenue / yr
- $143K–$171K
- units × avg price
- Conversion rate
- 4.0%
- Avg BSR
- #1,039
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 35%
- Out of stock
- 12.2%
- Avg brand age
- 37 months
- Avg seller age
- 181 days
Competition & brand share
Clicks spread well past the top 5 (37% combined) — an open shelf where new products get seen.Brands
10 rising
Sellers
59
Top-5 brand share
95%
Top 20: 100%
Top-5 click share
37%
Top 20: 75%
Open market
4%
- ほぼ日81%
- M Miss.Misy6%
- Thenshop4%
- Shitajiki Pencil Board2%
- CRASPIRE1%
- Maitys1%
- Open — no brand owns it (4 brands, 4%)
Demand & seasonality
Weekly Amazon search volume, last 79 weeks — -56.8% search growth over the last 90 days.Peak months: Jan, Sep, Oct, Nov, Dec · busiest ÷ quietest = 9.4×
Top bullet journal ruler search terms
- pencil board62K/yr
- a5 pencil board31K/yr
- hobonichi pencil board55K/yr
- hobonichi weeks pencil board76K/yr
- a6 pencil board22K/yr
- pencil board a519K/yr
- hobonichi cousin accessories17K/yr
- hobonichi pencil board a512K/yr
- hobonichi techo accessories12K/yr
- hobonichi a6 pencil board14K/yr
Top bullet journal ruler 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 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Hobonichi Pencil Boards Ice Gray x Yellow
ほぼ日$10.144.6★96 rev
Hobonichi Techo Accessories Moomin: Hobonichi Pencil Board for A5 Size (Jungle Game)
ほぼ日$12.925.0★56 rev
Hobonichi Techo Accessories Hobonichi Pencil Board - Weeks (Navy x Pink)
ほぼ日$14.594.7★350 rev
Hobonichi Techo Accessories Moomin: Hobonichi Pencil Board for Weeks (Grand Ball)
ほぼ日$10.744.8★93 rev
Hobonichi Techo Accessories Yumi Kitagishi: Hobonichi Pencil Board for A5 Size (In the Garden)
ほぼ日$14.414.7★171 rev
Newest
by launch date
M Miss.Misy Pencil Board Planner Writing Accessory for journaling Camellia-White of A6 Size
M Miss.Misy$9.9918 rev
M Miss.Misy Pencil Board Planner Writing Accessory for journaling (AppleBird A5)
M Miss.Misy$10.1218 rev
Hobonichi Techo Accessories iyo okumi: Hobonichi Pencil Board for Weeks (Happy Tea Time - Group Party)
ほぼ日$10.2847 rev
Hobonichi Techo Accessories iyo okumi: Hobonichi Pencil Board for A5 Size (Happy Tea Time - Taste Good)
ほぼ日$13.3924 rev
Thenshop 5 Pack A5 Yellow Pencil Board Reusable Notebook Accessory Flexibility Layout Grids Board with Ruler Scale
Thenshop$10.3583 rev
Trending
90-day click momentumM Miss.Misy Pencil Board Planner Writing Accessory for journaling (AppleBird A5)
M Miss.Misy$10.124.6★
M Miss.Misy Pencil Board Planner Writing Accessory for journaling Camellia-White of A6 Size
M Miss.Misy$9.994.6★
Hobonichi Techo Accessories Hiroko Kubota: Hobonichi Pencil Board for A6 Size (Aurora Duty)
ほぼ日$14.024.6★
Hobonichi Pencil Boards Ice Gray x Yellow
ほぼ日$10.144.6★
Hobonichi Techo Accessories Hobonichi Pencil Board for A6 Size (Ice Gray x Yellow)
ほぼ日$7.474.8★
What buyers say about bullet journal ruler
What buyers praise and complain about, mined from review topics.What buyers love
“It is beautifully made”
“The design is incredibly thoughtful”
“Exactly as advertised”
“The size is perfect”
“Being organized”
“holds up nicely”
“I love the colors”
“So easy to use”
“Works perfectly as a bookmark or to keep your writing from going through to the next page”
“Cute bookmark and pencil board”
What buyers complain about
“I do think it is a tad expensive for what it is though”
“Needs to be thicker”
“Cheap”
“It is a super thin elastic with zero elasticity”
“I was tired of using ugly cardboard”
“It did come slightly bent because it is a flimsy/thinner material which was disappointing”
“Too short”
“Wrong product description”
“Too slippery”
“However, I realized today that the grid, which I assumed was metric, isnt exact”
Top return reasons
Common questions
- Is bullet journal ruler profitable to sell on Amazon United States?
- The niche generates $197K/yr across 43 tracked products. 2 of 15 products launched in the last 360 days are still selling. 90-day search growth is -56.8%. Flapen's verdict: Skip it (40/100).
- How competitive is the bullet journal ruler niche?
- 10 brands and 59 sellers compete. The top 5 products take 37% of clicks and top 5 brands hold 95% of demand.
- What do buyers complain about in bullet journal ruler?
- Top complaints mined from reviews: Value For Money, Thickness, Quality-Overall. The return rate is 2.6%.
- When does demand for bullet journal ruler peak?
- Demand peaks in Jan–Sep–Oct–Nov–Dec; the busiest month runs 9.4× the quietest.
- What does it cost to enter the bullet journal ruler niche?
- Listings span $6.61–$16.38; the average listing price is $11.41 (sweet spot $15–$100). The average incumbent carries 125 reviews — the moat a new listing must climb.