When I published my first book, it sat on Amazon for three weeks with zero reviews. I checked the page obsessively, refreshing it like a lunatic, as though a review might materialise if I just believed hard enough. It didn't. And during those three weeks, virtually nobody bought it either.
Reviews are social proof. They tell a potential reader that other human beings have read your book and formed an opinion about it. Without them, your book looks untested — and readers don't like being guinea pigs.
How Many Do You Actually Need?
There's no magic number, but there's a threshold where things start to change. In my experience, somewhere between ten and twenty reviews is where a book starts to look credible. Below ten, readers are cautious. Above twenty, they stop counting and start reading the reviews themselves.
The star rating matters, but not as much as you'd think. A book with thirty reviews averaging 4.2 stars will outsell a book with three reviews averaging 5.0 stars every time. Volume signals popularity. A perfect score from a handful of people signals that your mum and her book club left reviews.
What Actually Works
Ask readers directly. This sounds obvious, but most authors don't do it. Include a note at the back of your book — after the last chapter but before anything else — asking the reader to leave a review if they enjoyed the story. Keep it short, keep it genuine, and make it easy by including a direct link to the review page. You'll be surprised how many people will do it simply because you asked.
ARC readers. ARC stands for Advance Review Copy. Before your book launches, give free copies to a small group of readers in exchange for an honest review. You can find ARC readers through social media groups, dedicated ARC services, or by building your own mailing list. The key word is "honest" — you're not buying five-star reviews, you're asking real readers for their genuine opinion.
BookSprout, StoryOrigin, and similar services. These platforms connect authors with reviewers. You upload your book, readers request a copy, and they leave a review after reading it. They're not free, but they're affordable and they work if you use them consistently.
Your mailing list. If you've got one — and you should — email your subscribers when the book launches and ask them to review it. These are people who've already opted in because they're interested in your work. They're your most likely reviewers.
What Doesn't Work
Asking friends and family. Amazon's review system is designed to detect suspicious patterns. If your first ten reviews all come from people with the same surname or who've never reviewed a book before, Amazon may remove them. Even if they don't, reviews from people who clearly know you personally carry no weight with other readers.
Paying for reviews. Just don't. Amazon will catch you, your account could be suspended, and you'll have earned exactly nothing from the exercise except a headache and a black mark.
Obsessing over negative reviews. You will get them. Every book does. A one-star review that says "I didn't like the ending" isn't a crisis — it's proof that real people are reading your book. Leave it alone. Do not respond to it. Move on.
The Long Game
Reviews accumulate over time. Your first book will always be the hardest to get reviews for. By the time you publish your second or third, you'll have readers who follow your work and review it without being asked. The early grind is temporary, even if it doesn't feel like it at the time.
Get to twenty reviews by whatever ethical means you can. After that, the book starts selling itself.