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iWrity is the growth platform for self-published Kindle authors. Earn points by writing honest reviews of other indie books, then spend them on reviews for your own. Plus KDP tools: Book Health Check, Category Finder, Description Generator.

Learn JavaScript
Learn Git Branching
Deno
Bun.sh
Bootstrap
Learn in an interactive environment.

Which is more popular?
Based on our record, React Tutorial seems to be more popular. It has been mentioned 18 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | iwrity.com | react-tutorial.app |
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| Company | Startup from the Netherlands · 1 - 9 employees | — |
| Listed in |
In their own words, as submitted to SaaSHub.


iWrity is the growth platform for indie and KDP authors. At its core is an ethical Amazon review exchange. Authors earn points by writing honest reviews of other authors' Kindle books, then spend those points to receive genuine reviews for their own titles. Every review is reciprocal and honest....
No description of React Tutorial yet.
What each product offers, as listed by its team.


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Walkthroughs and reviews on video.
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React Tutorial for Beginners
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing iWrity and React Tutorial.
iWrity's answer
iWrity runs on a points economy instead of a pay-per-review model. You read another author's book, leave an honest Amazon review, and earn points. Those points then buy reviews for your own book from other verified readers.
Reviewers are never paid and nobody is asked for a positive rating. The opinion stays the reviewer's own.
Around that sits a set of KDP research tools: a category finder, a niche finder, a price advisor, a description generator and a listing health check. Most tools hand you data. iWrity also hands you the readers.
iWrity's answer
Most review services either charge per review or drop your book into a mailing list and hope someone opens it. iWrity pairs two authors who both want the same thing, so the pool of readers grows with the community instead of with an ad budget.
The free plan stays free, with no card required and no countdown. Paid plans start at $19 a month and add the research tools, expert publisher feedback and support for the non-US stores (UK, DE, FR, ES, IT, CA, AU), where reviews are hardest to come by.
Feedback on your listing and manuscript comes from a publisher with a six-figure track record, not from an automated score.
iWrity's answer
Self-published authors on Amazon KDP. Mostly people running their own imprint rather than writers with a traditional publisher behind them.
Two groups dominate. First, new indie authors who have a finished book, a live listing and zero reviews, which is the point where sales stall before they start. Second, working indies with a backlist who need a steady flow of honest reviews on every new release instead of a one-off push.
A large share publish outside the United States or sell into the UK, German, French, Spanish, Italian, Canadian and Australian stores, where reviews are far harder to collect.
iWrity's answer
iWrity grew out of our own publishing work. We put out illustrated non-fiction, and every launch hit the same wall: a finished book, a live Amazon listing, and no reviews. Paid review services break Amazon's terms. Asking friends does not scale and does not read as honest either.
So we built what we needed. Authors read each other's books and leave real reviews, and a points balance keeps the trade even, so nobody takes more than they give.
The KDP research tools came second. They started as the spreadsheets we were already keeping on categories, pricing and niche demand, and it made no sense to keep them to ourselves. The company is run from the Netherlands by a very small team.
iWrity's answer
Share your experience with using iWrity and React Tutorial. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Tracking iWrity since Aug 2026.
I just wanted to know if anybody took both or the react-tutorial.app course. I mostly like the flashcards part of the course. I was thinking of taking the Scrimba course and just using the other courses study materials. Source: about 3 years ago
The Jad Joubran courses on the other hand really upped my skill level and helped me make the jump from passive learning, exercises and very small projects to making legitimate web apps. That was probably the biggest/scariest jump I've... Source: over 3 years ago
I learned through https://react-tutorial.app/ and absolutely loved it. I'm also a hands-on guy. Source: over 3 years ago
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