--- title: "diary with lock — Niche Verdict: Worth a look (61/100) | Amazon United States - Flapen" canonical_url: "https://flapen.com/amazon/research/us/office-products/diary-with-lock" last_updated: "2026-07-10T00:48:00.611Z" locale: en meta: description: "diary with lock shows a fragmented shelf (top 5 take 24% of clicks), but a small market ($431K/yr) keeps it on the watch list." "og:description": "diary with lock shows a fragmented shelf (top 5 take 24% of clicks), but a small market ($431K/yr) keeps it on the watch list." "og:title": "diary with lock — Niche Verdict: Worth a look (61/100) | Amazon United States - Flapen" --- Back to Flapen home # **diary with lock** **Worth a look****61/100 ** diary with lock shows a fragmented shelf (top 5 take 24% of clicks), but a small market ($431K/yr) keeps it on the watch list. **Market/yr** **$431K** **Growth (1y)** **+257.8%** **Products** **94** **Brands** **49** was 41 a year ago **Sellers** **59** **Price range** **$6.70–$92.06** **Returns** **1.1%** **Rating** **4.6★** **Worth a look** Scored 61/100 across market size, growth, competition, quality gap, and returns. Market sizeGrowthCompetitionQuality gapReturns Market size **22** ×0.30 Growth **82** ×0.30 Competition **91** ×0.20 Quality gap **28** ×0.10 Returns **91** ×0.10 ## **Demand** Weekly Amazon search volume, last 104 weeks — +257.8% year over year. 61K31KHoliday '24Black Friday '25Jul '24Nov '24Mar '25Jul '25Nov '25Mar '26 ## **Seasonality** Monthly demand index across the year — 1.00 is average. JFMAMJJASOND Peak months: Nov, Dec · busiest ÷ quietest = 2.3× ## **Competition** - WEMATE15% - CAGIE8% - ZXHQ7% - ZICOTO6% - Hoci Poci6% - GINMLYDA5% - Other (43 brands)53% Clicks spread well past the top 5 (24% combined) — an open shelf where new products get seen. 49 brands and 59 sellers compete here. **Brands** **49 **▲rising was 41 a year ago **Sellers** **59** **Top 5 brand share** **42%** #ProductBrandPriceRatingReviewsClick shareTrend 1 ![ZXHQ Lock Journal with Pen A5 240 Pages Diary with Lock Brown Edge Refillable Leather Hardcover (8.5 5.9inch) Dark Green](https://m.media-amazon.com/images/I/51OHaXthIyL.jpg) [**ZXHQ Lock Journal with Pen A5 240 Pages Diary with Lock Brown Edge Refillable Leather Hardcover (8.5 5.9inch) Dark Green**](https://www.amazon.com/dp/B0BR73LWDD) ZXHQ$14.854.5★1,8275%—flat 2 ![CAGIE Diary with Lock for Girls and Women A5 Journal with Lock for 8 10 11 12 14 16 Year Old Girls Gifts Presents 192 Pages Waterproof Journal for Girls Ages 8-12 with Pen Marble Diary Purple](https://m.media-amazon.com/images/I/414dhiqGLRL.jpg) [**CAGIE Diary with Lock for Girls and Women A5 Journal with Lock for 8 10 11 12 14 16 Year Old Girls Gifts Presents 192 Pages Waterproof Journal for Girls Ages 8-12 with Pen Marble Diary Purple**](https://www.amazon.com/dp/B09XQ513CP) CAGIE$14.194.6★1,9385%▼falling 3 ![WEMATE Diary with Lock A5 PU Leather Journal with Lock 240 Pages Vintage Locks Journal Password Notebook with Pen Locks Diary Planner Organizer for Men and Women 8.6x5.8in Black](https://m.media-amazon.com/images/I/51S6M+pQjfL.jpg) [**WEMATE Diary with Lock A5 PU Leather Journal with Lock 240 Pages Vintage Locks Journal Password Notebook with Pen Locks Diary Planner Organizer for Men and Women 8.6x5.8in Black**](https://www.amazon.com/dp/B09QWL9CNL) WEMATE$15.524.5★2,4295%▲rising 4 ![WEMATE Journal with Lock Diary with Lock Password Notebook Pen & Gift Box - Perfect for Men and Women - 4.3X 6.18in Black Keep Your Secrets Safe](https://m.media-amazon.com/images/I/415ugfqdY7L.jpg) [**WEMATE Journal with Lock Diary with Lock Password Notebook Pen & Gift Box - Perfect for Men and Women - 4.3X 6.18in Black Keep Your Secrets Safe**](https://www.amazon.com/dp/B0BBPMWDCP) WEMATE$10.674.4★9035%▲rising 5 ![Hoci Poci Diary with Lock and Keys for Girls Gift Ideas 360 Gold Edged Pages Journal for Women B6 Refillable Notebook for Writing with Pen and Bookmark (Garden Pink)](https://m.media-amazon.com/images/I/41H2LV8W2NL.jpg) [**Hoci Poci Diary with Lock and Keys for Girls Gift Ideas 360 Gold Edged Pages Journal for Women B6 Refillable Notebook for Writing with Pen and Bookmark (Garden Pink)**](https://www.amazon.com/dp/B09QX2S8FZ) Hoci Poci$19.104.8★1,8925%▼falling 6 ![WEMATE Locked Journal with Pen & Gift Box A5 260 Pages Refillable Hardcover Leather Password Notebook for Writing Vintage Locking Diary for Women Girls Men Students 8.6 x 5.8 in Black](https://m.media-amazon.com/images/I/51EL4iNNz5L.jpg) [**WEMATE Locked Journal with Pen & Gift Box A5 260 Pages Refillable Hardcover Leather Password Notebook for Writing Vintage Locking Diary for Women Girls Men Students 8.6 x 5.8 in Black**](https://www.amazon.com/dp/B0DQQ312PS) WEMATE$17.204.4★5924%▲rising 7 ![PJDRLLC Cat Diary with Lock Gift for 6 7 8 Year Old Girl Secret Diary Journal Notebook with Coin Purse Multicolored Pen Post-it Note Stickers Practical Gift for Birthday (A Happy Cat)](https://m.media-amazon.com/images/I/51D6yw3-xuL.jpg) [**PJDRLLC Cat Diary with Lock Gift for 6 7 8 Year Old Girl Secret Diary Journal Notebook with Coin Purse Multicolored Pen Post-it Note Stickers Practical Gift for Birthday (A Happy Cat)**](https://www.amazon.com/dp/B0C7KPN3W7) PJDRLLC$17.134.8★8793%▲rising 8 ![Aesthetic Diary with Lock - Beautiful Leather Journal with Easy to Change Code Lock & Refillable Pages - Quality 8.5x5.6 Planner for Women with Bookmark & Pen Holder to Protect Thoughts & Memories](https://m.media-amazon.com/images/I/41a3ZQNHSDL.jpg) [**Aesthetic Diary with Lock - Beautiful Leather Journal with Easy to Change Code Lock & Refillable Pages - Quality 8.5x5.6 Planner for Women with Bookmark & Pen Holder to Protect Thoughts & Memories**](https://www.amazon.com/dp/B0F99XRBKJ) ZICOTO$13.594.5★2393%—flat 9 ![Lock Diary Vintage Journal with Lock for Women Leather Diary with Locks Refillable Personal Locking Locked Journal Writing Notebook B6 Secret Journal with Combination Password 5.5 x 7.8 in Pink](https://m.media-amazon.com/images/I/51wMpoISm0L.jpg) [**Lock Diary Vintage Journal with Lock for Women Leather Diary with Locks Refillable Personal Locking Locked Journal Writing Notebook B6 Secret Journal with Combination Password 5.5 x 7.8 in Pink**](https://www.amazon.com/dp/B09V2TN5XF) Yoment$23.174.7★9233%▲rising 10 ![PrinBarBee Axolotl Diary for Girls with lock and keys Kids Journal School Travel Notebook Gift Set for Writing and Drawing Multicolored Pen Stickers Birthday Gift for Girls ages 6-8](https://m.media-amazon.com/images/I/51gctGss4uL.jpg) [**PrinBarBee Axolotl Diary for Girls with lock and keys Kids Journal School Travel Notebook Gift Set for Writing and Drawing Multicolored Pen Stickers Birthday Gift for Girls ages 6-8**](https://www.amazon.com/dp/B0D11S5S5G) PrinBarBee$9.374.7★7623%▼falling 11 ![Aesthetic Diary with Lock - Beautiful Leather Journal with Easy to Change Code Lock & Refillable Pages - Quality 8.5x5.6 Planner for Women with Bookmark & Pen Holder to Protect Thoughts & Memories](https://m.media-amazon.com/images/I/41Gj384a1ML.jpg) [**Aesthetic Diary with Lock - Beautiful Leather Journal with Easy to Change Code Lock & Refillable Pages - Quality 8.5x5.6 Planner for Women with Bookmark & Pen Holder to Protect Thoughts & Memories**](https://www.amazon.com/dp/B0F99TMMVT) ZICOTO$13.414.5★2392%▲rising 12 ![Lock Diary for Women Diary with Lock for Girls A5 Leather Locked Journal 260 Pages 100 GSM Refillable Journal with Lock for Teens Secrets Flower Journals with Combination Passwords 5.7x8.3 Green](https://m.media-amazon.com/images/I/41+Wc8yw-1L.jpg) [**Lock Diary for Women Diary with Lock for Girls A5 Leather Locked Journal 260 Pages 100 GSM Refillable Journal with Lock for Teens Secrets Flower Journals with Combination Passwords 5.7x8.3 Green**](https://www.amazon.com/dp/B0FG2SBSBG) Ovesmusl$16.634.6★1792%—flat 13 ![Beadsky Diary with Lock for Girls Ages 8-12 A5 Journal with Lock 192 Pages Kids Locking Diary with Pen Locked Notebook Birthday Gifts Cute Stuff for Teen Tween Girls 8 9 10 11 12 14 Year Old](https://m.media-amazon.com/images/I/41FWPv9zOdL.jpg) [**Beadsky Diary with Lock for Girls Ages 8-12 A5 Journal with Lock 192 Pages Kids Locking Diary with Pen Locked Notebook Birthday Gifts Cute Stuff for Teen Tween Girls 8 9 10 11 12 14 Year Old**](https://www.amazon.com/dp/B0CJJFFGW7) Beadsky$13.834.5★5332%▼falling 14 ![Nsrzua DIY Journal Kit for Girls Toys for Ages 8-14 and Birthday Gifts for Girls.](https://m.media-amazon.com/images/I/51dWM4BSTDL.jpg) [**Nsrzua DIY Journal Kit for Girls Toys for Ages 8-14 and Birthday Gifts for Girls.**](https://www.amazon.com/dp/B0DGTH6DCP) Nsrzua$8.534.7★1,1482%—flat 15 ![Diary with Lock A5 Lockable Journal PU Leather Combination Lock Diary Lock Diary Planner Organizer for Men and Women Office Product 8.6 x 5.9 in-Cyan](https://m.media-amazon.com/images/I/41-QpdI64AL.jpg) [**Diary with Lock A5 Lockable Journal PU Leather Combination Lock Diary Lock Diary Planner Organizer for Men and Women Office Product 8.6 x 5.9 in-Cyan**](https://www.amazon.com/dp/B0CX8FKL4N) LXWHYP$10.014.5★3182%▲rising **~~Showing 15 of 94 — show all ~~** ## **Product shelf** All 94 tracked products in this niche. Top sellersNewestTrending [![ZXHQ Lock Journal with Pen A5 240 Pages Diary with Lock Brown Edge Refillable Leather Hardcover (8.5 5.9inch) Dark Green](https://m.media-amazon.com/images/I/51OHaXthIyL.jpg)**ZXHQ Lock Journal with Pen A5 240 Pages Diary with Lock Brown Edge Refillable Leather Hardcover (8.5 5.9inch) Dark Green** ZXHQ**$14.85**4.5★1,827 reviews](https://www.amazon.com/dp/B0BR73LWDD) [![CAGIE Diary with Lock for Girls and Women A5 Journal with Lock for 8 10 11 12 14 16 Year Old Girls Gifts Presents 192 Pages Waterproof Journal for Girls Ages 8-12 with Pen Marble Diary Purple](https://m.media-amazon.com/images/I/414dhiqGLRL.jpg)**CAGIE Diary with Lock for Girls and Women A5 Journal with Lock for 8 10 11 12 14 16 Year Old Girls Gifts Presents 192 Pages Waterproof Journal for Girls Ages 8-12 with Pen Marble Diary Purple** CAGIE**$14.19**4.6★1,938 reviews](https://www.amazon.com/dp/B09XQ513CP) [![WEMATE Diary with Lock A5 PU Leather Journal with Lock 240 Pages Vintage Locks Journal Password Notebook with Pen Locks Diary Planner Organizer for Men and Women 8.6x5.8in Black](https://m.media-amazon.com/images/I/51S6M+pQjfL.jpg)**WEMATE Diary with Lock A5 PU Leather Journal with Lock 240 Pages Vintage Locks Journal Password Notebook with Pen Locks Diary Planner Organizer for Men and Women 8.6x5.8in Black** WEMATE**$15.52**4.5★2,429 reviews](https://www.amazon.com/dp/B09QWL9CNL) [![WEMATE Journal with Lock Diary with Lock Password Notebook Pen & Gift Box - Perfect for Men and Women - 4.3X 6.18in Black Keep Your Secrets Safe](https://m.media-amazon.com/images/I/415ugfqdY7L.jpg)**WEMATE Journal with Lock Diary with Lock Password Notebook Pen & Gift Box - Perfect for Men and Women - 4.3X 6.18in Black Keep Your Secrets Safe** WEMATE**$10.67**4.4★903 reviews](https://www.amazon.com/dp/B0BBPMWDCP) [![Hoci Poci Diary with Lock and Keys for Girls Gift Ideas 360 Gold Edged Pages Journal for Women B6 Refillable Notebook for Writing with Pen and Bookmark (Garden Pink)](https://m.media-amazon.com/images/I/41H2LV8W2NL.jpg)**Hoci Poci Diary with Lock and Keys for Girls Gift Ideas 360 Gold Edged Pages Journal for Women B6 Refillable Notebook for Writing with Pen and Bookmark (Garden Pink)** Hoci Poci**$19.10**4.8★1,892 reviews](https://www.amazon.com/dp/B09QX2S8FZ) [![WEMATE Locked Journal with Pen & Gift Box A5 260 Pages Refillable Hardcover Leather Password Notebook for Writing Vintage Locking Diary for Women Girls Men Students 8.6 x 5.8 in Black](https://m.media-amazon.com/images/I/51EL4iNNz5L.jpg)**WEMATE Locked Journal with Pen & Gift Box A5 260 Pages Refillable Hardcover Leather Password Notebook for Writing Vintage Locking Diary for Women Girls Men Students 8.6 x 5.8 in Black** WEMATE**$17.20**4.4★592 reviews](https://www.amazon.com/dp/B0DQQ312PS) [![PJDRLLC Cat Diary with Lock Gift for 6 7 8 Year Old Girl Secret Diary Journal Notebook with Coin Purse Multicolored Pen Post-it Note Stickers Practical Gift for Birthday (A Happy Cat)](https://m.media-amazon.com/images/I/51D6yw3-xuL.jpg)**PJDRLLC Cat Diary with Lock Gift for 6 7 8 Year Old Girl Secret Diary Journal Notebook with Coin Purse Multicolored Pen Post-it Note Stickers Practical Gift for Birthday (A Happy Cat)** PJDRLLC**$17.13**4.8★879 reviews](https://www.amazon.com/dp/B0C7KPN3W7) [![Aesthetic Diary with Lock - Beautiful Leather Journal with Easy to Change Code Lock & Refillable Pages - Quality 8.5x5.6 Planner for Women with Bookmark & Pen Holder to Protect Thoughts & Memories](https://m.media-amazon.com/images/I/41a3ZQNHSDL.jpg)**Aesthetic Diary with Lock - Beautiful Leather Journal with Easy to Change Code Lock & Refillable Pages - Quality 8.5x5.6 Planner for Women with Bookmark & Pen Holder to Protect Thoughts & Memories** ZICOTO**$13.59**4.5★239 reviews](https://www.amazon.com/dp/B0F99XRBKJ) ## **Reviews** What buyers praise and complain about, mined from review topics. ### **What buyers love ** **Quality-Overall**18% *“The variety is impressive”* **Gifting Purpose**16% *“Given as a gift”* **Value For Money**7% *“Great Deal”* **Locking Mechanism**6% *“Lock mechanism seems sturdy”* **Fun/Entertainment Experience**6% *“Fun for kids”* **Color**6% *“Blue color is gorgeous”* **Advertised Vs Actual Product**5% *“Just as advertised”* **Design-Overall**4% *“The design is cute”* **Paper Quality**3% *“Paper looks durable for markers or pens”* **Size-Overall**3% *“Size perfect for a kid”* ### **What buyers complain about ** **Locking Mechanism**19% *“The lock sucks”* **Quality-Overall**9% *“Cheap Low Quality”* **Size-Overall**8% *“barely fits through”* **Instructions/User Manual/Troubleshooting**7% *“Good Product Bad Instructions”* **Durability**5% *“Broke quickly”* **Value For Money**5% *“I do think it's a bit overpriced for what you get”* **Functionality-Overall**4% *“it never worked”* **Ease Of Use**4% *“it was difficult to close it”* **Color**3% *“Color is off”* **Writing Experience**3% *“For example: If you have a bad day you might not be able to write about all of it cause the pages are short”* #### **Top return reasons**- Size-Overall23% - Locking Mechanism20% - Value For Money10% - Functionality-Overall9% - Advertised Vs Actual Product7% - Quality-Overall7% - Color6% - Gifting Purpose5% - Defective Material/Parts2% - Mechanism Issues1%