Best Self-Publishing Platforms (Big Five): Amazon KDP, Apple Books, Kobo & More

Choosing the Best Self-Publishing Platform: The Big Five Marketplaces for Indie Authors

So you’ve written the next great novel, children’s book, or nonfiction guide—and now you’re ready to publish. Amazing. But here’s the part that trips up even experienced indie authors: where should you release your book?

Picking a self-publishing platform is a lot like matchmaking. You don’t just want a marketplace—you want the marketplace where your ideal readers already shop, browse, and buy. The good news? One of the biggest advantages of self-publishing is the luxury of choice. You can test, refine, and build a publishing strategy that fits your genre, goals, and audience.

In this guide, we’ll break down the five biggest self-publishing platforms—what they’re best at, who they reach, and how to decide which one belongs in your launch plan.

The Big Five Self-Publishing Platforms

When authors talk about “going wide” (publishing beyond Amazon) or building a global readership, they’re usually talking about these five:

• Amazon KDP
• Barnes & Noble Press
• Apple Books
• Google Play Books
• Kobo Writing Life

Publishing on a large platform is ideal if you want to:

• build a recognizable author brand
• reach readers worldwide
• target readers through categories, keywords, and platform discovery
• earn retailer reviews that support long-term visibility

And that’s where Booksprout comes in.

At Booksprout, we know that reviews are one of the strongest signals you can generate during a book launch—especially for self-published authors. All of the Big Five platforms support reader reviews, and when readers claim your ARC through Booksprout, they can easily leave reviews on the retailer(s) you choose.

Now let’s meet the major players.

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Amazon KDP (Kindle Direct Publishing)

Amazon is the largest online book retailer in the world, and KDP is its self-publishing platform for ebooks and paperbacks. Many indie authors begin here because the audience size is massive and Kindle is deeply integrated into Amazon’s ecosystem.

Benefits of Amazon KDP

• Huge global customer base: Amazon gives your book exposure to millions of readers worldwide.
• KDP Select (aka Kindle Unlimited / KU) (optional): Join for access to special promo tools and participation in Amazon’s subscription ecosystem—but it requires ebook exclusivity for a set enrollment period.
• Strong discoverability: Amazon’s store is built for search, browse, categories, and rapid buying decisions.

Watch-outs

• If you rely only on Amazon, your success depends heavily on Amazon’s audience and ecosystem. That can be great—until it isn’t. Diversifying platforms can help you stabilize income and reach new reader pockets.

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Barnes & Noble Press (B&N Press)

Barnes & Noble is one of the most recognizable book retailers in the United States, and its publishing arm supports indie authors through B&N Press (often associated with the Nook ecosystem).

Benefits of Barnes & Noble Press

• Reader loyalty: B&N attracts a devoted customer base—especially readers loyal to the brand and the Nook experience.
• Author-friendly platform: User-friendly setup with competitive royalties and promotional opportunities.
• Strong U.S. visibility potential: A smart choice if your audience skews heavily U.S.-based or you lean into bookish discovery culture.

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Apple Books

Apple Books puts your ebooks in front of readers across iPhone, iPad, and Mac via the built-in Books app—meaning your book can be one tap away for millions of Apple users.

Benefits of Apple Books

• Massive device ecosystem: Apple is everywhere, and Apple Books is baked into that experience.
• 70% royalty rate (standard): Competitive and familiar for indie authors.
• No exclusivity required: You can publish on Apple Books while also publishing wide elsewhere.

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Google Play Books

Google Play Books reaches readers across Android devices, iOS, and web browsers, making it a strong global option—especially where Android dominates.

Benefits of Google Play Books

• Android’s huge user base: Publishing here helps you reach a massive segment of mobile readers.
• No exclusivity required: Like Apple, Google lets you stay flexible and publish widely.
• Global availability: Google Play Books operates in many countries, helping you reach international readers from day one.

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Kobo Writing Life

Kobo is well-loved for its clean reader experience and its strong international presence. Kobo Writing Life lets you upload ebooks, set prices, and distribute within Kobo’s storefront.

Benefits of Kobo Writing Life

• International reach: Kobo is a go-to in several non-U.S. markets, making it a strong “wide” foundation.
• Pricing flexibility: Kobo gives authors freedom to test price points—including offering a free first-in-series (great for series read-through).
• Kobo Plus (subscription, non-exclusive) (optional): Readers can subscribe for unlimited reading, and authors can participate without exclusivity requirements.

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Reviews Matter on Every Platform

No matter where you publish, reviews are a visibility multiplier.

They help:

• retailer algorithms recommend your book to new readers
• hesitant browsers convert into buyers
• your book gain credibility and social proof during launch week (and beyond)

That’s why Booksprout pairs so well with any of the Big Five: you choose the retailer(s), we help you get your book into readers’ hands, and those readers can review on the platform(s) you’re focused on.

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Final Thoughts: Pick the Marketplace Where Your Readers Already Shop

Choosing the best self-publishing platform isn’t just a tech decision—it’s a strategic launch choice. Amazon might be the powerhouse, but Apple Books, Google Play, Kobo, and Barnes & Noble each offer unique strengths, audiences, and growth potential.

Your best move:

• define your goals (exclusive vs. wide, global vs. U.S.-centric, series vs. standalone)
• identify where your target readers already buy
• build a review plan that supports visibility from day one

With the right platform mix—and strong early reviews—your book won’t just launch. It’ll stick.