Best Book Writing Apps in 2025

Stuck in front of a blank page? Need a boost of inspiration? Join us to overcome blocks and push your creativity to the max. With Writing Challenge, you will brainstorm new and fresh ideas and embrace freewriting in the funniest way ever.

Platforms: iPhone, iPad, Mac, Android

Best for: Brainstorming, Story, Book, and Poetry

Website: https://www.writingchallengeapp.com/

Also rated 4.4 ★ on the App Store

iWriter Pro is elegant and minimalist text editor with built-in MultiMarkdown support. Distraction-free and subscription-free.

Platforms: Mac, iPhone, iPad

Best for: Drafting, Book, Story, Blog, and Free

Website: https://serpensoft.info/

Also rated 4.8 ★ on the App Store

Writer Assistant (Wassi) is an application created specifically for inventors! We all constantly invent new characters for our stories, be it a comic, a novel, a script, a play, or a game. And so that our characters are alive and riveted the attention, they need to be developed a lot! That is what the Writer Assistant was created for! Plus, with Wassi you can easily outline your stories on the go.

Platforms: Mac, iPhone, iPad

Best for: Outlining, Book, Story, and Free

Website: https://apps.apple.com/app/writer-assistant-wassi/id14686...

Also rated 3.9 ★ on the App Store

Do you have a story to tell? Unlike conventional word processors, Storyist helps you track your plot, characters, and settings, and keeps all of your writing organized and accessible—so you can focus on telling your story.

Platforms: Mac, iPhone, iPad

Best for: Outlining, Drafting, Book, and Story

Website: https://storyist.com/

Also rated 4.0 ★ on PC Magazine

Notes are just the beginning. Create and annotate anything, from study guides to storyboards. We've got an intuitive, minimal interface for you to start in seconds.

Platforms: Mac, iPhone, iPad

Best for: Note-taking, Book, Story, Journal, and Free

Website: https://notability.com/

Also rated 4.7 ★ on the App Store

Elevate your writing, create beautiful documents, and collaborate with others—anywhere, anytime.

Platforms: Online, Mac, Windows, iPhone, iPad, Chrome, PC

Best for: Drafting, Essay, Journal, Book, Story, Poetry, and Blog

Website: https://www.microsoft.com/en-us/microsoft-365/word

Also rated 4.5 ★ on TechRadar

Campfire is a versatile writing tool organized into modules, each one offering a different type of story element you can create. Keep track of each character's motives, history, eye color, and more. The Characters Module gives you an easy way to make quick notes or detailed character sheets about anyone in your story. Upload your map to the Maps Module, add pins to integrate it with the rest of your story, and nest other maps to keep things organized.

Platforms: Mac, Windows, Online, PC

Best for: Outlining, Drafting, Book, Story, and Free

Website: https://www.campfirewriting.com/

Also rated 4.0 ★ on Reedsy

A tactile tool to randomly combine a plot, a subject and a setting or style, the Brainstormer can provide that elusive moment of inspiration for writers, painters, or any kind of creative endeavour.

Platforms: iPhone, iPad

Best for: Brainstorming, Book, and Story

Website: https://www.tapnik.com/brainstormer/

Also rated 3.5 ★ on the App Store

Outline faster, organize smarter, and turbocharge your productivity today with the #1 visual book planning software for writers.

Platforms: Mac, iPhone, iPad, Android, Windows, PC

Best for: Outlining, Book, and Story

Website: https://plottr.com/

Also rated 3.0 ★ on Reedsy

Capture what’s on your mind. Add notes, lists, photos, and audio to Keep.

Platforms: Online, iPhone, iPad, Android

Best for: Note-taking, Story, Book, Blog, Journal, Poetry, and Free

Website: https://www.google.com/keep/

Also rated 4.5 ★ on TechRadar

Build your best ideas together, in Google Docs. Create, edit, and collaborate with others on documents from your Android phone or tablet with the Google Docs app.

Platforms: Online, Chrome, iPhone, iPad, Android

Best for: Drafting, Book, Essay, Journal, Poetry, Story, Blog, and Free

Website: https://www.google.com/docs/about/

Also rated 4.0 ★ on TechRadar

Most writers have at least one old notebook lying around somewhere, full of old story ideas, interesting characters, enchanting locations, or a myriad of other margin-scribbled thoughts. Notebook.ai is a worldbuilding tool that organizes, saves, and helps in fully fleshing out your fictional world, your way.

Platforms: Online, Chrome

Best for: Worldbuilding, Book, Story, and Free

Website: https://www.notebook.ai/