Amazon signal tracking for authors
BookSylo watches your book's public Amazon pages and tells you when something meaningful changes — rating, rank, price, or a bestseller badge — so you can stop refreshing and get back to writing.
How it works
Paste an ASIN or ISBN, or just search the title with an optional author hint. No Amazon login, ever.
It checks your book's public Amazon pages on a regular schedule and keeps a tidy history of what it finds.
A glanceable notification carrying the actual numbers, the moment a rating, rank, price, or badge changes.
Written for working authors
Every one of these is a moment authors already check for by hand. BookSylo just does the checking.
Refreshing your product page between writing sessions tells you nothing most of the time. Let your phone tell you when something actually moved — the numbers are in the notification, so you often will not even open the app.
Rank is public, and a sharp rank improvement is worth knowing about while it is happening. BookSylo pings you when your rank jumps, not hours later.
Most authors care about one subcategory more than the whole store. Set the Top N you are aiming for, see it drawn on your rank graph, get an alert when your book crosses it, and mute the categories you do not care about.
Pin a private note to the day the price drop, newsletter feature, or ad push ran and see it marked right on your rank and rating history. On launch day, Pro users can hit Check now instead of waiting for the next scheduled check.
Kindle, paperback, hardcover, and audiobook, across 22 Amazon marketplaces — grouped into one tidy title card on Pro instead of a long list.
BookSylo tracks any public Amazon book page, not only your own. Add the comp titles and category bestsellers you measure yourself against and learn what good looks like in your category.
Features
Everything BookSylo watches, how it reaches you, and what you can do with it once it arrives.
A new rating lands, or your star average shifts — you hear about it.
Store rank plus every specific category your book is listed in, with thresholds so small noise stays quiet.
Set the Top N you are aiming for and see the goal line drawn on your rank history graph.
An alert when you break into a Top N, and a Best Seller signal when a category rank cracks the Top 10.
Public price changes on your listing, alongside every other signal.
“Improved 35 spots to #87 in Hard Science Fiction. Best rank this week.” — not “something changed”.
Every category your book ranks in can carry its own threshold, or be muted on its own.
Prefer one check-in over individual pings? Switch to a digest.
Nothing arrives at 3 a.m. unless you want it to.
Every rating, rank, price, and milestone moment for a book, in one list.
Start tracking by ASIN, ISBN, or title search with an optional author hint.
Kindle, paperback, hardcover, and audiobook across 22 Amazon marketplaces.
Rating, rank, and price as graphs or a table — 14 days on Free, 90 days on Pro.
Organize your catalog the way you think about it, and anchor a note to the day it happened.
Send a snapshot or a single milestone straight to the share sheet. Public metrics only — never your notes.
Edition grouping and Check now are Pro features. Everything else listed above is on every plan.
Coverage
Publishing wide should not mean picking one store to care about. BookSylo can follow the same title across formats and marketplaces, and Pro lets you group the editions you track into one Home card.
A title has data in a marketplace where it is actually listed on Amazon.
Pricing
The core tracking experience is free for one ASIN. Pro adds the room, the history, and the launch-day controls a growing catalog needs.
Free
Watch one edition of one book in one marketplace, with the core signals and controls included.
What's included
Pro
Save 33%Subscribe now and keep $4.99 — the increase applies to new subscribers.
May include a 14-day free trial where available.
For multiple books, editions, marketplaces, and the comp titles you want to keep close.
What's new
Trust & privacy
BookSylo reads the same Amazon pages your readers see. It never touches your KDP account, and there is nothing about sales or royalties in it.
FAQ
No. BookSylo never asks for an Amazon login and never stores Amazon credentials.
No. BookSylo only reads public Amazon page signals such as ratings, rank, price, and badges. It is not a sales or revenue tracker.
No. BookSylo is an independent product and is not affiliated with Amazon.
All 22: the US, UK, Germany, France, Italy, Spain, Canada, Australia, Japan, India, Brazil, Mexico, the Netherlands, Sweden, Poland, Turkey, the United Arab Emirates, Saudi Arabia, Egypt, Belgium, Ireland, and Singapore. A title has data in a marketplace where it is actually listed on Amazon.
Yes. BookSylo tracks any public Amazon book page, so the comp titles and category bestsellers you measure yourself against can sit alongside your own books.
Not for the Free plan — one book can be tracked without registering. A registered account is required to purchase or restore Pro.
The Free plan lets you track 1 book. Pro is $4.99 per month, is required to track 2 or more books, and may include a 14-day free trial where available.
Not for you. If you subscribe at $4.99, you keep that rate for as long as your subscription stays active. Pro is planned to move to $7.49 per month as BookSylo grows, but that price applies to new subscribers — not to a subscription that is already running.
BookSylo regularly checks the public Amazon pages of your tracked books, detects meaningful changes, and sends them to your device with the actual numbers in them. Quiet hours, pause, snooze, and per-book and per-category thresholds are all yours to set.
Only public Amazon-facing values: the book title, the public metrics, the date, and a small BookSylo signature. Your private labels, notes, and account details are never shared.
Your tracked books, notification preferences, an optional account email, and any support diagnostics you choose to send. It does not store Amazon credentials.
BookSylo is a mobile app for iPhone, iPad, and Android.
Get the app
Add one title, set your alerts, and let BookSylo take Amazon off your daily checklist. No Amazon login, and no account needed to start.
BookSylo is a mobile app for iPhone, iPad, and Android.
