Red Ink Report vs Inkshift

Both tools use AI to analyse your manuscript. Here's how they differ.

Feature comparison as of March 2026.

Feature Red Ink Report Inkshift
Price Free up to 10k words / £20 per report Free up to 10k words / $25–$100 per report
Chapter-by-chapter developmental notes
Visual pacing map
Continuity error log
Plot architecture analysis
Character arc assessment (in critique)
Genre-specific structural analysis
Summary scorecard with ratings
Writing craft review
Ranked revision priorities (in revision plan, extra $10)
Line-by-line markup ($100 tier)
Query letter & synopsis Coming soon
No subscription required
Turnaround ~15 minutes ~5 minutes
Max manuscript length 150,000 words 300,000 words

Where Red Ink Report Goes Deeper

Inkshift delivers a general critique and a writing-quality assessment. Red Ink Report delivers a structured 12-section developmental report that mirrors the kind of feedback you'd get from a professional developmental editor: chapter-by-chapter notes, a plot architecture breakdown, character arc assessments, genre-specific analysis, a pacing map, and a ranked list of revision priorities. Every section is designed to give you something you can act on immediately.

The continuity error log is one of the features authors notice first. It cross-references every chapter in your manuscript against every other, flagging timeline errors, physical impossibilities, and contradictions that even careful self-editing misses. A character's eye colour changes halfway through? A journey that should take two hours happens in twenty minutes? The log catches it.

The pacing map gives you a visual, chapter-by-chapter view of your manuscript's momentum — where the tension rises, where it sags, and where a reader is most likely to put the book down. Instead of a vague note about "pacing issues," you can see exactly which chapters need tightening and why.

Finally, the genre-specific structural analysis checks your manuscript against the actual conventions of your genre — not generic "marketability" advice. Writing a cosy mystery? The report checks for proper clue placement, fair-play misdirection, and whether the solution feels earned. Writing a thriller? It evaluates escalation, stakes, and clock pressure. The analysis adapts to what your genre's readers expect.