Plot & characters

Plan a book arc and build memorable characters with AI

Fyrlo creates an editable chapter plan for books and lets you build character profiles that add useful context to books, stories, and scripts.

Download on theApp Store
Romance story world used to anchor character relationships
A tactile story plan made from connected chapter cards
Context that travelsKeep the plan and cast connected.Chapters & story beats
PlanChapters & story beats
BuildCharacter profiles
Available oniPhone & iPad
CharactersBooks, stories & scripts

How it works

From idea to a structured draft.

Generate the story plan

For books, Fyrlo turns your premise, genre, tone, length, and characters into an editable chapter plan before the first draft.

Add your cast

Create characters with names, roles, and traits. Fyrlo can reference them when writing new chapters.

Generate with context

Chapter generation uses the project plan, selected characters, and existing story context to move the draft forward.

Context the next chapter can use

Connect the premise, the cast, and the turning points.

Planning is useful when it makes the next decision clearer. The outline stays editable, character context stays specific, and the prose remains open to revision.

Connected story cards forming a chapter plan01
Premise

Name the central tension

A clear premise tells every later chapter which conflict the project is actually trying to develop.

Romance story world representing character relationships02
Relationships

Give the cast something to want

Roles, motivations, and relationships are useful context when they influence a choice on the page.

Mystery story world representing plot questions03
Arc

Let each chapter change the question

A visible plan helps you spot repeated beats, missing turns, and an ending that arrives before it has been earned.

Plot planning that scales with your project

Long projects need a spine. Fyrlo generates a plan with a summary and chapter details so you can see where the story is headed before AI fills in the prose.

You can review and edit planned chapters before generation. The plan follows the chapter count chosen during book setup.

  • Chapter or scene direction before generation
  • Editable titles, summaries, beats, point of view, and location
  • Character context connected to the project
  • A visible arc from opening to ending

Characters who stay consistent

Readers notice when a character’s voice shifts or a name changes mid-book. Fyrlo’s character tools store roles, relationships, and traits so generated chapters can stay in character.

Add protagonists, antagonists, supporting cast, and narrators. Update profiles when someone evolves—the next chapter can reflect the change.

Planning and writing in one app

You do not need a separate notes app for the basic story structure. The plan, character sheets, and generated chapters stay connected to the same project.

A clear premise and useful character notes give generation better context. They do not guarantee perfect continuity, so each chapter still deserves your review.

Set the right expectation

Fyrlo is a creative writing assistant. AI-generated drafts can vary and should be reviewed, edited, and owned by you—not treated as finished manuscripts or professional publishing advice.

Good to know

Questions, answered

Do I have to plan before generating?

No, but planning improves coherence. You can start with a simple premise and add characters and chapter notes as the story grows.

How many characters can I add?

You can create multiple character profiles and select the relevant cast for a project. Focus on characters who materially affect the story.

Does Fyrlo remember characters across chapters?

Character and plot context is used when continuing your project. Keep profiles updated for the best consistency in new chapters.

Can I use this for screenplays?

Character profiles are available for screenplay projects. The dedicated editable chapter-plan screen is part of the Book workflow.

Your next chapter, without the blank page

Try plot & characters on your iPhone or iPad.

Choose a format, set genre and tone, and keep generating chapters worth continuing in your library.