MagnetFactory / Bonus Content Builder
Give readers a reason to stay in your world.
Develop reader extras, guides, bonus material, and promotional copy around the book’s actual promise.
$47 one-time app access · AI provider usage is separate.
The captured app is labeled Bonus Content Factory. The store purchase is Bonus Content Builder.

Your workflow
From starting point to something useful.
Choose the reader extra
Start with book context and decide what your reader should get from the freebie.
Generate and inspect
Review the guide or bonus draft for continuity, spoilers, and invented details.
Package the invitation
Refine the signup copy and promotional plan, then build and deliver the freebie in your chosen tools.
A concrete example
See what the workflow looks like.
The video builds a spoiler-light reader’s guide to Veyr, edits a continuity error, and reviews signup and promotional copy. It shows the material you can take into your own delivery and email setup.


Screenshots show the actual app interface. Book and author examples are fictional. Setup screens are labeled separately from generated results; interface details may vary by edition.
What you can do
A focused tool for a specific job.
- Reader-extra concepts
- Choose a freebie that fits the story and audience.
- Bonus drafts
- Develop additional material from book context.
- Guide content
- Shape world or character material into a useful reader extra.
- Signup copy
- Draft the invitation for your landing page.
- Promotional ideas
- Plan how to introduce the extra to readers.
- Continuity review
- Check the draft against what actually happens in the book.
Learn before you choose
Watch the tool in use.
Under one minute · Actual app captures · AI narration · English captions
Read the overview transcript
MagnetFactory — overview Fictional demonstration. Actual app captures. AI narration. Give readers a reason to spend more time in your story world. MagnetFactory, labeled Bonus Content Factory in this app, creates reader bonuses and supporting signup copy. In this fictional example, we made a guide to a city that trades memories, then reviewed the actual output and its continuity check. The tool caught a rule that needed correcting. We edited the guide and sharpened the landing headline before preparing it for download. You can also generate a three-day promotion sequence. Bring your own supported AI key, then watch the full workflow in the Darkling tool tutorial library.
Before you start
What you need.
Bring accurate book context and decide how much to reveal. You still host the file, set up the signup page, and deliver emails through your own services.
AI access and usage
Connect a supported AI provider as shown in your edition. App access and AI usage are separate; provider availability and costs depend on your account. Read the API setup guide.
Keep a reviewed copy
Check the work against your actual project, then save or export the material you want to keep. Your final editorial and publishing choices remain yours.
MagnetFactory / Bonus Content Builder
Put the tool to work.
One-time app purchase.
Use your purchase license in My Library to open the tool.
Already own it? Open My LibraryAlso available through the Full Marketing Suite and Everything Bundle.
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