Privacy Policy

Effective date: November 11, 2026

Nichely is a Chrome extension that helps authors research book niches on Amazon.com. It has no servers that receive your data, it collects no analytics, and we do not sell any data.

What the extension does

• On Amazon.com search pages it reads the visible results (titles, prices, ratings and review counts).
• When you click Check niche, it opens the pages of the top 10 books in the background, from your browser, to read their Best Sellers Rank, publisher and publication date.
• When you ask for keyword ideas, it requests suggestions from Amazon's search autocomplete.
• On a book page, it shows that book's rank and estimated sales under the title.

All of this happens inside your browser and only talks to Amazon. Amazon's own privacy notice applies to those requests, as it does when you browse Amazon yourself.

Data stored on your device

To avoid asking Amazon twice, the details of books you analyzed are kept for up to 12 hours in the browser's session storage for Amazon.com. They are deleted when you close the tab.

Your last 12 niche checks (keyword, score, median sales and median reviews), how many checks you have run and whether you answered the review prompt are kept in the browser's local storage for Amazon.com, so the panel can show them again. They never leave your device. Clearing Amazon.com site data deletes them.

Data the extension collects

None. The extension has no user accounts, no tracking, no advertising and no analytics. The developer cannot see your searches, your Amazon account or your browsing. Buttons marked Soon only open a page on our website (see below); the extension itself sends nothing. After you install Nichely it opens a welcome page on our website once, and if you remove it, the browser opens a page there asking why (answering is optional).

Our website and the Pro waitlist

• Website analytics. This website (tubetools.online/nichely/) uses Google Analytics to count visits, including which "coming soon" feature a visitor arrived from. In the European Economic Area, the UK and Switzerland, analytics cookies stay off unless you accept them.
• Pro waitlist. If you join it, we store the email address you give, the features you picked, your optional comment and where you came from in Google Forms, which Google runs for us. We use them only to email you about the launch of Nichely Pro and the features you asked for. We rely on your consent, and we delete the list within six months after Pro launches, or earlier if you ask.
• Your rights. Write to leafpost.dev@gmail.com to see, correct or delete your data or to withdraw your consent. You can also complain to your data protection authority.

Permissions

Nichely only runs on www.amazon.com pages. It asks for no other permissions.

Children

Nichely is a tool for authors and publishers and does not knowingly collect information from children. Please do not join the waitlist if you are under 16.

Changes and contact

If this policy changes, the new version will be published on this page with a new effective date. Questions: leafpost.dev@gmail.com.

Nichely is not affiliated with Amazon. Amazon, Kindle and KDP are trademarks of Amazon.com, Inc. or its affiliates.