Where your story keeps its own memory.
Write your novel in a beautiful editor while CodexStudio auto-tags every character, weapon and world you invent — and guards your continuity while you're at it.
Write like a novelist. Remember like a machine.
A distraction-free, Word-class editor built for long-form fiction. As you write, CodexStudio quietly recognises your characters, weapons, places and objects — colour-coding each one right in the prose. Click any highlight to edit that detail, and the change echoes across every chapter.
- Colour-coded vital details inline
- Click-to-edit updates everywhere
- Autosave, word count, reading time
Every vital detail, in one searchable board.
Your story's memory lives here. Characters, factions, locations and artefacts become cards you can search, filter by type, and mark as 'included'. No more scrolling three chapters back to remember the name of that rifle.
- Search & filter by type
- Mark details as included
- AI rates what actually matters
Plan big-to-small — logline to acts to chapters.
Start with a single logline, break it into acts, and drop chapters onto a corkboard you can drag and reshape. Tension sliders, status flags and an AI 'Snowflake' expand help you outline before you write a single scene.
- Corkboard & outline views
- Drag chapters between acts
- Detail-plan chapters with a beat/scene checklist
- AI expands logline → acts → chapters
Never lose track of a single round — or arrow — again.
A timeline-aware loadout engine for action, survival, fantasy and historical fiction. Tell it 'Rourke fired thirty rounds' or 'Mara loosed a dozen arrows' — it drains the right ammo pool, restocks from your source, and warns you the moment continuity breaks. It reads per-weapon calibres and magazine sizes, reconciles absolute ammo-checks ('down to two mags'), and when a character falls, flags them KIA so you can loot their gear and redistribute ammo across the squad. Carry Kits too — Med Kits and pouches whose contents live in your Codex and auto-fill each character's tick-off checklist.
- Natural-language gear updates & smart ammo depletion
- Per-weapon calibres, magazine sizes & absolute ammo-checks
- KIA detection → loot the fallen & redistribute ammo
- Kit checklists, low-stock & continuity warnings
Everything a serious storyteller needs
One studio, from first spark to finished draft.
AI Detail Scan
Sweep any chapter and let AI surface the details worth remembering.
AI Proofread
Catch spelling and grammar slips without leaving your manuscript.
Multi-device safe sync
Auto-refresh, save-guard and version history keep your work safe across every device.
Dual-monitor panels
Pop the Codex, Loadouts and Blueprint out into their own windows — edits sync live.
Section templates
Reusable Prologue, Epilogue & About the Author sections, with a saved author bio.
Auto chapter numbering
Chapters renumber themselves as you add, reorder or delete — custom titles kept.
Kits & pouches
Build a Med Kit in your Codex once — it auto-fills every character's loadout checklist.
Import your work
Drop in a .docx, .txt or .pdf — it splits into chapters and extracts details.
Export to PDF & Word
Export a clean manuscript, or take your codex with you, whenever you like.
Branching / CYOA
Build choose-your-own-adventure books with a visual branch map.
Cover art
Upload a cover for every project and make your desk feel like a shelf.
Install as an app
Add CodexStudio to your home screen or desktop — it works like a native app.
Up and writing in minutes
Create your book
Start a project or import an existing manuscript to break into chapters.
Write & auto-tag
Draft in the editor while CodexStudio highlights and remembers your details.
Plan & keep continuity
Outline on the Blueprint and let Gear Sync guard your story's logic.
I'm an aspiring author who never actually finished a book — I kept drowning in my own notes, characters and world details. So I built the tool I wished I had. This is CodexStudio.
CodexStudio is free to use. If it's helping your story, a small donation keeps it going.
Your saga is waiting to be remembered.
Create a free account and give your story a memory of its own.