A ghostwritten series runs $5,000-18,000 per book and months per instalment (Reedsy 2026 marketplace data). Instawritr Pro Plus writes the whole series on your own machine, one-time.

Everything in Pro — synopsis, manuscript, QA, cover, EPUB, full audiobook (local Kokoro TTS, no per-word cost), 30-day marketing engine (extracts emotional peaks, quotes, tropes, renders social cards), staged to 6 stores — plus lifetime updates: every new feature and store ships automatically.

SERIES MODE (Pro Plus exclusive): one command per book. A series bible carries characters, world rules, timeline and open threads across books. A blocking canon gate repairs contradictions before shipping. Locked cover DNA and series metadata get stores shelving them as one series. Validated on a 2-book series: both 94/100, zero canon contradictions.

Human-like prose craft: windowed sentence length variance, genre tone vectors, sensory balance, and automated cliché elimination.

Quality is measured, not promised. The QA loop rewrites weak spots until it clears a 3-part gate (90+, zero open critical defects, empty revision list) — a live run went 66 to 87 to 90 to 95 to 99. Books built by this pipeline are on sale in 51 Apple Books stores today.

You also get a private members community (Forums & Chat), priority help when a run snags, and model-config reviews.

Runs on your own AI keys or fully offline via llama.cpp. No subscription, no credits. Private GitHub repo, all agents/skills, HARNESS.md manual.