NetGalley vs BookSirens: Which Is Better for Indie Authors?
NetGalley and BookSirens are both ARC (advance reader copy) distribution platforms for getting book reviews. NetGalley costs $350–$599 for a listing and reaches a large pool of librarians and media, but only about a third of downloaders review. BookSirens costs $10–$149 per campaign, matches readers by genre, and reports roughly 75% of downloaders leave a review.
Both platforms are popular ARC sites, but neither is built for Amazon KDP indie authors. Here's an honest breakdown, plus the alternative most indie authors actually use.
Last updated August 2026.
The Core Problem with Both Platforms
For indie Amazon authors, NetGalley and BookSirens have the same fundamental issue.
Reviews Don't Go to Amazon
Both NetGalley and BookSirens primarily serve reviewers who post on Goodreads, BookBub, library blogs, and trade publications. For Amazon KDP rankings, you need Amazon reviews, and neither platform prioritizes that.
Built for Traditional Publishing
NetGalley was built for publishers distributing to librarians, journalists, and booksellers. BookSirens adapted this model for indie authors, but the reviewer base and review destinations are the same.
NetGalley Is Expensive
NetGalley starts at $450/year minimum. For indie authors with tight budgets, this is a significant investment for reviews that may not even land on Amazon.
iWrity Is Built for Amazon KDP
iWrity was designed specifically for indie Amazon authors. Readers are Amazon shoppers and Kindle readers who post reviews directly on your Amazon book page. That's where reviews drive sales.
NetGalley vs BookSirens vs iWrity
| Feature | iWrity | NetGalley | BookSirens |
|---|---|---|---|
| Starting price | Free tier available | $450/year minimum | $99–$149/book |
| Review destination | Amazon (direct) | Goodreads, trade sites | Goodreads, blogs |
| Amazon KDP focused | ✅ Yes | ❌ No | ⚠️ Partially |
| Indie author friendly | ✅ Yes | ⚠️ Built for publishers | ✅ Yes |
| Free tier | ✅ Yes | ❌ No | ❌ No |
| Review turnaround | 3–7 days | 2–6 weeks | 2–4 weeks |
| Genre matching | ✅ Auto-matched | Manual selection | Manual selection |
| International Amazon | ✅ 8 stores | ❌ No | ❌ No |
Does BookSirens Give Better Review Rates Than NetGalley?
Yes, in most published author reports. BookSirens reports around 75% of readers who download a copy leave a review, versus roughly a third on NetGalley. The gap comes down to genre matching: BookSirens pairs your book with readers who already read that genre, while NetGalley's co-op audience is broader and includes librarians and press who may never read the book at all.
Is BookSirens Cheaper Than NetGalley?
Yes, by a wide margin. BookSirens charges $10 to list plus $2 per download, or a flat $100/year for unlimited campaigns. A direct NetGalley listing runs $350–$599 for a co-op slot, or $499/month for a full account. For an indie author launching two or three books a year, that difference adds up fast.
Which Has More Reviewers: NetGalley or BookSirens?
NetGalley has the bigger pool, over 680,000 registered members including librarians, booksellers, and media. BookSirens is smaller and curated by genre. More reviewers only helps if they actually read and review your genre, which is why BookSirens' smaller, matched pool often outperforms NetGalley's size on completed reviews per dollar spent.
Does NetGalley or BookSirens Protect Against Piracy?
NetGalley locks each file with Adobe DRM, which restricts copying and printing before a reviewer even opens it. BookSirens takes a different approach: it watermarks every copy with the individual reader's name and blocks repeat downloads from pirate IP addresses. Neither method stops leaks completely, but a watermarked file is easier to trace back to whoever leaked it.
Is NetGalley or BookSirens Better for Audiobook Reviews?
NetGalley is the stronger pick if your book has an audio edition. It reported a 59% listener feedback rate on audiobook titles as of late 2025, well above its own ebook review rate. BookSirens accepts audiobook ARCs too, but it doesn't publish a separate completion rate for audio, so authors have less to go on when deciding whether to submit there.
What Does 50 Amazon-Focused Reviews Actually Cost?
On BookSirens, a 75% completion rate means roughly 67 downloads to land 50 reviews, which comes to about $144 total ($10 setup plus $2 per download). NetGalley charges a flat $450–$600 no matter how many reviews land, and at a 2–15% completion rate you may need hundreds of downloads to reach 50, with no guarantee any of them post to Amazon. iWrity has no per-book listing fee: reviews run on points earned by reviewing other authors' books, or bought in bulk for a fraction of BookSirens' per-review cost, and every review lands on the Amazon page itself.
Can You Use NetGalley, BookSirens, and iWrity Together?
Yes, and plenty of authors do. NetGalley builds pre-launch buzz among librarians and press, BookSirens fills the Goodreads review count fast and cheap, and iWrity is the one built to land reviews on the Amazon product page where they actually move rankings. Running a campaign on each around the same launch window is a common indie strategy, not wasted overlap. See our full breakdowns of whether NetGalley is worth the price and BookSirens alternatives for indie authors.
Want Reviews That Actually Go to Amazon?
iWrity readers post directly on Amazon. Free to start, no per-book fees.
Start Free on iWrityFrequently Asked Questions
Is NetGalley worth it for indie authors in 2026?+
For most self-published Amazon KDP authors, NetGalley's $450+/year price is hard to justify when reviews mainly land on Goodreads rather than Amazon. BookSirens is more affordable. iWrity is better if you specifically want Amazon reviews.
How does BookSirens compare to NetGalley?+
BookSirens is more indie-author friendly and significantly cheaper than NetGalley. However, the reviewer base still primarily posts on Goodreads and blogs rather than Amazon.
Which platform gets the most Amazon reviews?+
iWrity gets the most Amazon reviews for indie authors because it's the only platform in this comparison built specifically for Amazon KDP. Both NetGalley and BookSirens focus on non-Amazon review destinations.
Can I use NetGalley and iWrity together?+
Yes. Many authors use NetGalley or BookSirens for Goodreads/library visibility and iWrity for Amazon reviews. They serve different purposes and can be used simultaneously.
What's the cheapest way to get book reviews?+
iWrity's free tier lets you earn points by reviewing other books, then use those points to get reviews on your own titles. It's the most cost-effective option for indie authors starting out.
Does BookSirens have a higher review completion rate than NetGalley?+
Yes. BookSirens reports roughly 75% of downloaders leave a review, versus about a third on NetGalley. Genre matching is the main reason: readers who already read that genre are more likely to finish the book and post a review.
Does NetGalley or BookSirens have more reviewers?+
NetGalley has the larger pool, over 680,000 members. BookSirens is smaller but genre-matched. Size alone doesn't win: BookSirens' curated readers often complete more reviews per dollar spent than NetGalley's broader audience.
Does NetGalley or BookSirens protect better against piracy?+
NetGalley uses Adobe DRM to restrict copying and printing. BookSirens watermarks each copy to the individual reader and blocks repeat pirate downloads by IP. BookSirens' watermark makes tracing a leak back to its source easier.
Is NetGalley or BookSirens better for audiobook reviews?+
NetGalley, if your book has an audio edition. It reported a 59% listener feedback rate on audiobooks as of late 2025. BookSirens accepts audio ARCs but doesn't publish a separate completion rate for the format.
What does 50 Amazon reviews cost on NetGalley vs BookSirens?+
About $144 on BookSirens (67 downloads at a 75% completion rate). NetGalley's flat $450–$600 fee doesn't scale with results, and at a 2–15% completion rate, reaching 50 reviews can take hundreds of downloads with no guarantee any land on Amazon.
Reading for free, not for pay
iWrity gives readers free copies from indie authors. No payment, no review required, nothing owed in return. Amazon bans paying for reviews, so we do not pay.
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