# TrueRoyalties Know the real net profit of your Amazon KDP books by combining KDP royalties and Amazon Ads spend in one continuous view. Base URL: https://trueroyalties.com ## LLM Entry Points - [llms.txt](https://trueroyalties.com/llms.txt) - This URL map for AI agents. - [All documentation as Markdown](https://trueroyalties.com/docs) - Fetch with curl, HTTPie, SDK clients, or Accept: text/markdown. - [Single documentation page as Markdown](https://trueroyalties.com/docs/getting-started) - Replace the slug with any documentation slug below. ## Public Pages - [Home](https://trueroyalties.com/) - Know the real net profit of your Amazon KDP books by combining KDP royalties and Amazon Ads spend in one continuous view. - [Documentation](https://trueroyalties.com/docs) - Human documentation index. Non-browser clients receive all documentation as Markdown. - [Blog](https://trueroyalties.com/blog) - Published articles and tutorials. - [Changelog](https://trueroyalties.com/updates) - Product updates, improvements, and release notes. - [About](https://trueroyalties.com/about) - About TrueRoyalties. - [Contact](https://trueroyalties.com/contact) - Support and contact page. - [Privacy Policy](https://trueroyalties.com/privacy) - Privacy policy and data handling information. - [Terms](https://trueroyalties.com/terms) - Terms of service. ## Documentation - [Create Testimonial](https://trueroyalties.com/docs/api-testimonials-create) - Create a new testimonial programmatically via the NowStack API - [List Testimonials](https://trueroyalties.com/docs/api-testimonials-list) - Retrieve a list of testimonials from your organization - [Current Organization API](https://trueroyalties.com/docs/api-me) - Retrieve the organization attached to an API key. - [List Organization Members API](https://trueroyalties.com/docs/api-members) - List organization members with an API key. - [Get Organization Member API](https://trueroyalties.com/docs/api-member) - Retrieve one organization member with an API key. - [Auth Components](https://trueroyalties.com/docs/auth-components) - Ready-to-use authentication components for sign-in, user menus, and session management - [Contact Components](https://trueroyalties.com/docs/contact-components) - Support dialog and feedback popover components for user communication - [Dialog Manager](https://trueroyalties.com/docs/dialog-manager) - Global dialog system for confirmation, input, and custom modals with automatic loading states - [Layout Components](https://trueroyalties.com/docs/layout-components) - Page layout components for consistent page structure with header, actions, and content areas - [Markdown Components](https://trueroyalties.com/docs/markdown-components) - Client and server markdown rendering components with MDX support - [Changelog System](https://trueroyalties.com/docs/changelog) - Public changelog with MDX content, timeline UI, and sidebar widget for keeping users informed - [File Upload Storage](https://trueroyalties.com/docs/file-adapters) - Configure Cloudflare R2 uploads for NowStack. - [API Routes](https://trueroyalties.com/docs/zod-route) - Type-safe API route handlers with TanStack Start and error handling - [Getting Started](https://trueroyalties.com/docs/getting-started) - Learn how to set up and start collecting testimonials with NowStack - [Embedding Testimonials](https://trueroyalties.com/docs/embedding) - Learn how to embed and display testimonials on your website ## Blog Content - [ACOS vs TACOS: Which One Actually Tells You If Your Book Business Is Profitable](https://trueroyalties.com/blog/acos-vs-tacos-kdp) - ACOS measures a single campaign. TACOS measures your whole book business, including the organic sales your ads lift. Here is the difference, the formulas, healthy benchmarks, and why a falling TACOS is the best signal in KDP advertising. Published 2026-07-06. - [Break-Even ACOS: The One Number That Decides If Your KDP Ads Make Money](https://trueroyalties.com/blog/break-even-acos-amazon-kdp-ads) - Break-even ACOS is the exact point where an Amazon ad stops costing you money. Here is the formula, worked examples for ebooks and paperbacks, and why comparing ACOS to your list price is the mistake quietly draining your budget. Published 2026-07-08. - [Stop Burning Money: Finding Wasted Ad Spend in Your Amazon Book Campaigns](https://trueroyalties.com/blog/find-wasted-ad-spend-amazon-book-ads) - Unmanaged Amazon book campaigns waste 30–50% of their budget on clicks that never convert. Here is how to read your search-term report, concrete rules for negative keywords, and why waste should be measured against net profit. Published 2026-07-02. - [One Book, Seven Currencies: Tracking KDP Profit Across US, UK, DE, FR, ES, IT & JP](https://trueroyalties.com/blog/kdp-profit-across-marketplaces-currency-tax) - The same book can be profitable in the US and lose money in Germany once ad VAT, withholding tax, and currency conversion are counted. Here is why you can't just add up numbers from different dashboards — and what a consolidated, tax-aware P&L should look like. Published 2026-06-30. - [Your ACOS Is Lying: How Kindle Unlimited (KENP) Hides Your Real Ad Profit](https://trueroyalties.com/blog/kindle-unlimited-kenp-hidden-ad-profit) - When a Kindle Unlimited reader clicks your ad and borrows your book, Amazon records the spend but zero revenue — so your ACOS looks awful even when you made money. Here is how KENP page-read royalties change the math, with the true ACOS formula. Published 2026-07-07. - [Net Profit Per Book: How to Know Which Titles Actually Make You Money](https://trueroyalties.com/blog/net-profit-per-book-kdp) - An account-level ACOS hides the losing titles your winners are subsidising. Here is how to calculate net profit per book, the costs authors forget, and a simple framework for deciding what to scale, fix, or pause. Published 2026-07-04. - [Blog category: Amazon Ads](https://trueroyalties.com/blog/categories/Amazon%20Ads) - Articles tagged Amazon Ads. - [Blog category: Metrics](https://trueroyalties.com/blog/categories/Metrics) - Articles tagged Metrics. - [Blog category: Profitability](https://trueroyalties.com/blog/categories/Profitability) - Articles tagged Profitability. - [Blog category: Optimization](https://trueroyalties.com/blog/categories/Optimization) - Articles tagged Optimization. - [Blog category: Marketplaces](https://trueroyalties.com/blog/categories/Marketplaces) - Articles tagged Marketplaces. - [Blog category: Kindle Unlimited](https://trueroyalties.com/blog/categories/Kindle%20Unlimited) - Articles tagged Kindle Unlimited. - [Blog category: KDP](https://trueroyalties.com/blog/categories/KDP) - Articles tagged KDP. ## Changelog Content - [Faster and steadier](https://trueroyalties.com/updates/2026-06-23-v240) - Changelog entry from 2026-06-23 for version 2.4.0. - [Your costs, your rates](https://trueroyalties.com/updates/2026-04-14-v230) - Changelog entry from 2026-04-14 for version 2.3.0. - [Exports and monthly reports](https://trueroyalties.com/updates/2026-02-10-v220) - Changelog entry from 2026-02-10 for version 2.2.0. - [Find wasted spend, get alerts](https://trueroyalties.com/updates/2025-12-16-v210) - Changelog entry from 2025-12-16 for version 2.1.0. - [A brand-new dashboard](https://trueroyalties.com/updates/2025-11-11-v200) - Changelog entry from 2025-11-11 for version 2.0.0. - [Japan, and much faster syncs](https://trueroyalties.com/updates/2025-09-30-v160) - Changelog entry from 2025-09-30 for version 1.6.0. - [Taxes, handled automatically](https://trueroyalties.com/updates/2025-08-19-v150) - Changelog entry from 2025-08-19 for version 1.5.0. - [Every marketplace, one currency](https://trueroyalties.com/updates/2025-07-01-v140) - Changelog entry from 2025-07-01 for version 1.4.0. - [More marketplaces](https://trueroyalties.com/updates/2025-05-20-v130) - Changelog entry from 2025-05-20 for version 1.3.0. - [Kindle Unlimited page reads finally count](https://trueroyalties.com/updates/2025-04-08-v120) - Changelog entry from 2025-04-08 for version 1.2.0. - [Profit, book by book](https://trueroyalties.com/updates/2025-02-25-v110) - Changelog entry from 2025-02-25 for version 1.1.0. - [TrueRoyalties is live](https://trueroyalties.com/updates/2025-01-14-v100) - Changelog entry from 2025-01-14 for version 1.0.0. ## Authenticated Application Route Patterns - [Sign in](https://trueroyalties.com/auth/signin) - User authentication entry point. - [Sign up](https://trueroyalties.com/auth/signup) - New user registration entry point. - [Dashboard](https://trueroyalties.com/app) - Authenticated single-account workspace (net-profit dashboard). /orgs redirects here. - [Books](https://trueroyalties.com/app/books) - Per-book profitability breakdown. - [Account settings](https://trueroyalties.com/app/settings/general) - Account profile, security, connections, billing, and danger settings. - [Admin](https://trueroyalties.com/admin) - Platform admin area. ## Notes For Agents - Browser requests receive HTML for human use. - Non-browser documentation requests receive Markdown optimized for agent ingestion. - Dynamic authenticated routes require a valid session and real organization slug.