Last updated: April 2026
By using KDP Rank Fuel you agree to these terms. Please read them — they're written in plain English.
KDP Rank Fuel is a product of Vappingo. References to "we", "us" or "our" mean Vappingo. Our website is rankfuel.vappingo.com and you can contact us at support@vappingo.com.
KDP Rank Fuel is a software-as-a-service tool that helps Amazon KDP authors research niches, build listings, track rankings, and manage advertising. The tools use real Amazon market data, AI-generated content, and keyword intelligence to assist publishers.
KDP Rank Fuel is a tool, not a guarantee. Results depend on how you use the outputs, your market, your book, and factors outside our control. We make no warranty that using the service will result in sales, rankings, or income.
You must provide a valid email address to create an account. You are responsible for keeping your login credentials secure. You must not share your account with others or allow others to use your credits.
You must be at least 18 years old to use the service.
We reserve the right to suspend or terminate accounts that abuse the service, including but not limited to: automated scraping, reselling outputs, or using the tools in a way that places excessive load on our infrastructure.
Some features require credits. Free accounts receive 3 credits on signup. Additional credits are available through paid plans or one-off purchases.
Credits are non-refundable once used. Unused credits on a monthly subscription do not roll over to the following month.
Subscriptions are billed monthly. You can cancel at any time — cancellation takes effect at the end of the current billing period. You will retain access to paid features until that date.
Payments are processed by Stripe. By subscribing you also agree to Stripe's terms of service.
Several tools in KDP Rank Fuel use AI (Claude by Anthropic) to generate listing copy, keyword suggestions, ad campaigns, and other content. You should review all AI-generated outputs before using them. We are not responsible for inaccuracies, errors, or outputs that do not meet Amazon's content guidelines.
You own the content you generate using the tools. We do not claim any rights over your outputs.
You must not use the tools to generate content that violates Amazon's policies, infringes third-party rights, or is misleading, harmful, or illegal.
KDP Rank Fuel uses third-party data providers including DataForSEO and Rainforest API to retrieve Amazon market data. This data is provided for informational purposes. We cannot guarantee its accuracy, completeness, or timeliness. Amazon search data changes frequently and results may not reflect real-time conditions.
You agree not to:
The KDP Rank Fuel platform, branding, and underlying software are owned by Vappingo. You may not copy, reproduce, or distribute any part of the service without our written permission.
Content you create using the tools is yours. We retain no rights to it.
To the maximum extent permitted by law, Vappingo is not liable for any indirect, incidental, or consequential damages arising from your use of the service, including lost revenue, lost rankings, or account issues with Amazon.
Our total liability to you for any claim arising from the service is limited to the amount you paid us in the 30 days preceding the claim.
We may update, modify, or discontinue features of the service at any time. We will give reasonable notice of significant changes where possible. Continued use of the service after changes constitutes acceptance of the updated terms.
We may update these terms from time to time. We will notify registered users of material changes by email. The date at the top of this page shows when it was last updated.
These terms are governed by the laws of England and Wales. Any disputes will be subject to the exclusive jurisdiction of the courts of England and Wales.
Questions about these terms: support@vappingo.com
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