Independent reviews

Eqqualitycce

Marketing softwareSep 24, 2026

Eqqualitycce: The Two-Click Mystery Engine That Turns Whodunit Puzzles Into Evergreen Amazon KDP Royalties

Eqqualitycce offers a cloud-based software to generate mystery logic puzzles for Amazon KDP and printables. It claims to automate puzzle creation, verification, and book formatting, targeting a 'hot KDP niche with almost no competition'.

Eqqualitycce: The Two-Click Mystery Engine That Turns Whodunit Puzzles Into Evergreen Amazon KDP Royalties 1
9.1/ 10

Exceptional

Eqqualitycce presents an intriguing proposition for KDP publishers looking to enter the logic puzzle niche without extensive manual work. Its claims of automation and market opportunity are appealing, but the inherent risk of niche saturation and the reliance on third-party platforms temper its overall appeal.

The good

  • +Automated puzzle generation with claimed single-solution verification.
  • +Multiple difficulty levels and grid sizes.
  • +Built-in Book Cover Studio and KDP page designer.
  • +Supports 8 book languages for wider market reach.
  • +Includes customizable elements like suspects, rooms, and artwork.
  • +Claims to eliminate the need for writing, design skills, or plotting.

The catch

  • −The core claim of a 'hot KDP niche with almost no competition' is difficult to verify and may quickly become saturated if widely adopted.
  • −The 'Voice Control' feature, while impressive, might not be necessary or always precise for puzzle generation.
  • −Relies heavily on Amazon KDP for sales, tying users to a specific platform's policies and competition.
  • −The high value assigned to the software and bonuses ($1997 for the engine, $97-$197 for bonuses) without an explicit price for the tool itself on the page.

What it claims Eqqualitycce offers a cloud-based engine called "Shigai Royalty" that claims to generate complete, Murdoku-style whodunit puzzle books with minimal effort. It states that users can "Turn A Simple 'Whodunit' Grid Into Evergreen Amazon Royalties — Without Writing A Single Word." The core promise is to automate the creation of story-driven logic mystery puzzles, including suspects, clues, solutions, hints, and step-by-step walkthroughs, with every puzzle mathematically verified to have exactly one solution.

It claims to be designed for Amazon KDP publishers and printable sellers. The software offers 5 difficulty levels (Easy to Dragon), grid sizes from 6x6 to 16x16, and supports 8 book languages (English, Spanish, French, German, Italian, Portuguese, Dutch, Polish).

It includes a built-in KDP page designer for formatting, margins, fonts, and trim sizes, and a Book Cover Studio for KDP covers. The engine also features custom casts, photo uploads, custom room names, and two artwork packs.

Recent additions include voice control, custom characters, and the ability to swap furniture in rooms, with re-verification of the puzzle logic. Eqqualitycce claims this tool allows users to tap into a "hot KDP niche with almost no competition" for story-driven logic mystery puzzles.

It positions itself as a solution to oversaturated KDP niches like word searches and Sudoku. The page features testimonials from "members of our past tools" claiming sales on Etsy and Amazon KDP.

Additional bonuses include a PDF Page Mover, KDP Keyword Finder, Description Helper, QR Book Generator, and a "Best Amazon KDP Research Tool And Niche Revealer." # Who it is for This tool is for individuals interested in generating and publishing puzzle books on Amazon KDP or selling them as printables on platforms like Etsy. It specifically targets those who want to enter the "whodunit" or mystery logic puzzle niche but lack writing skills, design expertise, or the time to manually create complex puzzles.

It's pitched to users who want an automated solution to quickly produce a catalog of unique, verified puzzles for passive income, especially those who may have struggled with competition in other KDP niches. It also caters to those who are not technically inclined, as it's cloud-based and uses a point-and-click interface. # The tradeoff The primary tradeoff is the reliance on a single automated engine for content generation in a niche that the sales page claims is "almost no competition." While the automation promises ease and speed, it also means that if the tool becomes popular, the niche could quickly become saturated with similar-looking or algorithmically-generated puzzles, diminishing the "empty shelf" advantage.

Furthermore, while the software claims to handle localization for 8 languages, the nuances of cultural context for mystery storytelling might be lost or simplified when generated by an engine. The "verified to one solution" claim is a significant benefit, but the overall market demand and long-term profitability of this specific puzzle type, when mass-produced, remain to be seen, especially as other sellers might use similar tools or manual processes to enter the same niche.

The high perceived value of the software components listed without a clear, upfront purchase price could also be a point of concern for potential buyers.

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